//
//  $Id$
//
//  SPTablesList.m
//  sequel-pro
//
//  Created by lorenz textor (lorenz@textor.ch) on Wed May 01 2002.
//  Copyright (c) 2002-2003 Lorenz Textor. All rights reserved.
//
//  This program is free software; you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation; either version 2 of the License, or
//  (at your option) any later version.
//
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this program; if not, write to the Free Software
//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
//  More info at <http://code.google.com/p/sequel-pro/>

#import "SPTablesList.h"
#import "SPDatabaseDocument.h"
#import "SPTableStructure.h"
#import "SPTableContent.h"
#import "SPTableData.h"
#import "SPTableInfo.h"
#import "SPDataImport.h"
#import "ImageAndTextCell.h"
#import "SPStringAdditions.h"
#import "SPArrayAdditions.h"
#import "RegexKitLite.h"
#import "SPDatabaseData.h"
#import "NSMutableArray-MultipleSort.h"
#import "NSNotificationAdditions.h"
#import "SPConstants.h"
#import "SPAlertSheets.h"
#import "SPNavigatorController.h"
#import "SPMainThreadTrampoline.h"
#import "SPHistoryController.h"
#import "SPServerSupport.h"

@interface SPTablesList (PrivateAPI)

- (void)removeTable;
- (void)truncateTable;
- (void)addTable;
- (void)copyTable;
- (void)renameTableOfType:(SPTableType)tableType from:(NSString *)oldTableName to:(NSString *)newTableName;
- (BOOL)isTableNameValid:(NSString *)tableName forType:(SPTableType)tableType;
- (BOOL)isTableNameValid:(NSString *)tableName forType:(SPTableType)tableType ignoringSelectedTable:(BOOL)ignoreSelectedTable;

@end

@implementation SPTablesList

#pragma mark -
#pragma mark IBAction methods

/**
 * Loads all table names in array tables and reload the tableView
 */
- (IBAction)updateTables:(id)sender
{
	MCPResult *theResult;
	NSArray *resultRow;
	NSInteger i;
	NSString *previousSelectedTable = nil;
	BOOL previousTableListIsSelectable = tableListIsSelectable;
	BOOL changeEncoding = ![[mySQLConnection encoding] isEqualToString:@"utf8"];

	if (selectedTableName) previousSelectedTable = [[NSString alloc] initWithString:selectedTableName];
	if (isTableListFiltered) {
		if (filteredTables) [filteredTables release];
		filteredTables = tables;
		if (filteredTableTypes) [filteredTableTypes release];
		filteredTableTypes = tableTypes;
		isTableListFiltered = NO;
	}
	tableListContainsViews = NO;

	tableListIsSelectable = YES;
	[[tablesListView onMainThread] deselectAll:self];
	tableListIsSelectable = previousTableListIsSelectable;
	[tables removeAllObjects];
	[tableTypes removeAllObjects];

	if ([tableDocumentInstance database]) {

		// Notify listeners that a query has started
		[[NSNotificationCenter defaultCenter] postNotificationOnMainThreadWithName:@"SMySQLQueryWillBePerformed" object:tableDocumentInstance];

		// Use UTF8 for identifier-based queries
		if (changeEncoding) {
			[mySQLConnection storeEncodingForRestoration];
			[mySQLConnection setEncoding:@"utf8"];
		}

		// Select the table list for the current database.  On MySQL versions after 5 this will include
		// views; on MySQL versions >= 5.0.02 select the "full" list to also select the table type column.
		theResult = [mySQLConnection queryString:@"SHOW /*!50002 FULL*/ TABLES"];
		if ([theResult numOfRows]) [theResult dataSeek:0];
		if ([theResult numOfFields] == 1) {
			for ( i = 0 ; i < [theResult numOfRows] ; i++ ) {
				[tables addObject:[[theResult fetchRowAsArray] objectAtIndex:0]];
				[tableTypes addObject:[NSNumber numberWithInteger:SPTableTypeTable]];
			}
		} else {
			for ( i = 0 ; i < [theResult numOfRows] ; i++ ) {
				resultRow = [theResult fetchRowAsArray];
				NSString *tableName = [NSString stringWithUTF8String:[[resultRow objectAtIndex:0] cStringUsingEncoding:[mySQLConnection stringEncoding]]];
				[tables addObject:tableName];
				if ([[resultRow objectAtIndex:1] isEqualToString:@"VIEW"]) {
					[tableTypes addObject:[NSNumber numberWithInteger:SPTableTypeView]];
					tableListContainsViews = YES;
				} else {
					[tableTypes addObject:[NSNumber numberWithInteger:SPTableTypeTable]];
				}
			}
		}

		// Reorder the tables in alphabetical order
		[tables sortArrayUsingSelector:@selector(localizedCompare:) withPairedMutableArrays:tableTypes, nil];

		/* Grab the procedures and functions
		 *
		 * Using information_schema gives us more info (for information window perhaps?) but breaks
		 * backward compatibility with pre 4 I believe. I left the other methods below, in case.
		 */
		if ([[tableDocumentInstance serverSupport] supportsInformationSchema]) {
			NSString *pQuery = [NSString stringWithFormat:@"SELECT * FROM information_schema.routines WHERE routine_schema = '%@' ORDER BY routine_name",[tableDocumentInstance database]];
			theResult = [mySQLConnection queryString:pQuery];

			// Check for mysql errors - if information_schema is not accessible for some reasons
			// omit adding procedures and functions
			if(![mySQLConnection queryErrored] && theResult != nil && [theResult numOfRows] ) {
				// add the header row
				[tables addObject:NSLocalizedString(@"PROCS & FUNCS",@"header for procs & funcs list")];
				[tableTypes addObject:[NSNumber numberWithInteger:SPTableTypeNone]];
				[theResult dataSeek:0];

				if( [theResult numOfFields] == 1 ) {
					for( i = 0; i < [theResult numOfRows]; i++ ) {
						[tables addObject:NSArrayObjectAtIndex([theResult fetchRowAsArray],3)];
						if( [NSArrayObjectAtIndex([theResult fetchRowAsArray], 4) isEqualToString:@"PROCEDURE"]) {
							[tableTypes addObject:[NSNumber numberWithInteger:SPTableTypeProc]];
						} else {
							[tableTypes addObject:[NSNumber numberWithInteger:SPTableTypeFunc]];
						}
					}
				} else {
					for( i = 0; i < [theResult numOfRows]; i++ ) {
						resultRow = [theResult fetchRowAsArray];
						[tables addObject:NSArrayObjectAtIndex(resultRow, 3)];
						if( [NSArrayObjectAtIndex(resultRow, 4) isEqualToString:@"PROCEDURE"] ) {
							[tableTypes addObject:[NSNumber numberWithInteger:SPTableTypeProc]];
						} else {
							[tableTypes addObject:[NSNumber numberWithInteger:SPTableTypeFunc]];
						}
					}
				}
			}
		}
		/*
		BOOL addedPFHeader = FALSE;
		NSString *pQuery = [NSString stringWithFormat:@"SHOW PROCEDURE STATUS WHERE db = '%@'",[tableDocumentInstance database]];
		theResult = [mySQLConnection queryString:pQuery];

		if( [theResult numOfRows] ) {
			// add the header row
			[tables addObject:NSLocalizedString(@"PROCS & FUNCS",@"header for procs & funcs list")];
			[tableTypes addObject:[NSNumber numberWithInt:SPTableTypeNone]];
			addedPFHeader = TRUE;
			[theResult dataSeek:0];

			if( [theResult numOfFields] == 1 ) {
				for( i = 0; i < [theResult numOfRows]; i++ ) {
					[tables addObject:[[theResult fetchRowAsArray] objectAtIndex:1]];
					[tableTypes addObject:[NSNumber numberWithInt:SPTableTypeProc]];
				}
			} else {
				for( i = 0; i < [theResult numOfRows]; i++ ) {
					resultRow = [theResult fetchRowAsArray];
					[tables addObject:[resultRow objectAtIndex:1]];
					[tableTypes addObject:[NSNumber numberWithInt:SPTableTypeProc]];
				}
			}
		}

		pQuery = [NSString stringWithFormat:@"SHOW FUNCTION STATUS WHERE db = '%@'",[tableDocumentInstance database]];
		theResult = [mySQLConnection queryString:pQuery];

		if( [theResult numOfRows] ) {
			if( !addedPFHeader ) {
				// add the header row
				[tables addObject:NSLocalizedString(@"PROCS & FUNCS",@"header for procs & funcs list")];
				[tableTypes addObject:[NSNumber numberWithInt:SPTableTypeNone]];
			}
			[theResult dataSeek:0];

			if( [theResult numOfFields] == 1 ) {
				for( i = 0; i < [theResult numOfRows]; i++ ) {
					[tables addObject:[[theResult fetchRowAsArray] objectAtIndex:1]];
					[tableTypes addObject:[NSNumber numberWithInt:SPTableTypeFunc]];
				}
			} else {
				for( i = 0; i < [theResult numOfRows]; i++ ) {
					resultRow = [theResult fetchRowAsArray];
					[tables addObject:[resultRow objectAtIndex:1]];
					[tableTypes addObject:[NSNumber numberWithInt:SPTableTypeFunc]];
				}
			}
		}
		*/

		// Restore encoding if appropriate
		if (changeEncoding) [mySQLConnection restoreStoredEncoding];

		// Notify listeners that the query has finished
		[[NSNotificationCenter defaultCenter] postNotificationOnMainThreadWithName:@"SMySQLQueryHasBeenPerformed" object:tableDocumentInstance];
	}

	// Add the table headers even if no tables were found
	if (tableListContainsViews) {
		[tables insertObject:NSLocalizedString(@"TABLES & VIEWS",@"header for table & views list") atIndex:0];
	} 
	else {
		[tables insertObject:NSLocalizedString(@"TABLES",@"header for table list") atIndex:0];
	}
	
	[tableTypes insertObject:[NSNumber numberWithInteger:SPTableTypeNone] atIndex:0];

	[[tablesListView onMainThread] reloadData];

	// if the previous selected table still exists, select it
	// but not if the update was called from SPTableData since it calls that method
	// if a selected table doesn't exist - this happens if a table was deleted/renamed by an other user
	// or if the table name contains characters which are not supported by the current set encoding
	if ( ![sender isKindOfClass:[SPTableData class]] && previousSelectedTable != nil && [tables indexOfObject:previousSelectedTable] < [tables count]) {
		NSInteger itemToReselect = [tables indexOfObject:previousSelectedTable];
		tableListIsSelectable = YES;
		[[tablesListView onMainThread] selectRowIndexes:[NSIndexSet indexSetWithIndex:itemToReselect] byExtendingSelection:NO];
		tableListIsSelectable = previousTableListIsSelectable;
		if (selectedTableName) [selectedTableName release];
		selectedTableName = [[NSString alloc] initWithString:[tables objectAtIndex:itemToReselect]];
		selectedTableType = [[tableTypes objectAtIndex:itemToReselect] integerValue];
	} 
	else {
		if (selectedTableName) [selectedTableName release];
		selectedTableName = nil;
		selectedTableType = SPTableTypeNone;
	}

	// Determine whether or not to show the list filter based on the number of tables, and clear it
	[[self onMainThread] clearFilter];
	
	if ([tables count] > 20) [self showFilter];
	else [self hideFilter];

	// Set the filter placeholder text
	if ([tableDocumentInstance database]) {
		[[[listFilterField cell] onMainThread] setPlaceholderString:NSLocalizedString(@"Filter", @"Filter placeholder")];
	}

	if (previousSelectedTable) [previousSelectedTable release];

	// Query the structure of all databases in the background
	if (sender == self)
		// Invoked by SP
		[NSThread detachNewThreadSelector:@selector(queryDbStructureWithUserInfo:) toTarget:mySQLConnection withObject:nil];
	else
		// User press refresh button ergo force update
		[NSThread detachNewThreadSelector:@selector(queryDbStructureWithUserInfo:) toTarget:mySQLConnection withObject:[NSDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithBool:YES], @"forceUpdate", [NSNumber numberWithBool:YES], @"cancelQuerying", nil]];
}

/**
 * Adds a new table to the tables-array (no changes in mysql-db)
 */
- (IBAction)addTable:(id)sender
{
	if ((![tableSourceInstance saveRowOnDeselect]) || (![tableContentInstance saveRowOnDeselect]) || (![tableDocumentInstance database])) return;

	[[tableDocumentInstance parentWindow] endEditingFor:nil];

	// Populate the table type (engine) popup button
	[tableTypeButton removeAllItems];

	NSArray *engines = [databaseDataInstance getDatabaseStorageEngines];

	// Add default menu item
	[tableTypeButton addItemWithTitle:@"Default"];
	[[tableTypeButton menu] addItem:[NSMenuItem separatorItem]];

	for (NSDictionary *engine in engines)
	{
		[tableTypeButton addItemWithTitle:[engine objectForKey:@"Engine"]];
	}

	// Populate the table encoding popup button with a default menu item
	[tableEncodingButton removeAllItems];
	[tableEncodingButton addItemWithTitle:@"Default"];

	// Retrieve the server-supported encodings and add them to the menu
	NSArray *encodings  = [databaseDataInstance getDatabaseCharacterSetEncodings];
	
	NSString *utf8MenuItemTitle = nil;
	
	[tableEncodingButton setEnabled:YES];
	
	if (([encodings count] > 0) && [[tableDocumentInstance serverSupport] supportsPost41CharacterSetHandling]) {
		[[tableEncodingButton menu] addItem:[NSMenuItem separatorItem]];
		
		for (NSDictionary *encoding in encodings) 
		{
			NSString *menuItemTitle = (![encoding objectForKey:@"DESCRIPTION"]) ? [encoding objectForKey:@"CHARACTER_SET_NAME"] : [NSString stringWithFormat:@"%@ (%@)", [encoding objectForKey:@"DESCRIPTION"], [encoding objectForKey:@"CHARACTER_SET_NAME"]];
			[tableEncodingButton addItemWithTitle:menuItemTitle];

			// If the UTF8 entry has been encountered, store the menu title
			if ([[encoding objectForKey:@"CHARACTER_SET_NAME"] isEqualToString:@"utf8"]) {
				utf8MenuItemTitle = [NSString stringWithString:menuItemTitle];
			}
		}

		// If a UTF8 entry was found, promote it to the top of the list
		if (utf8MenuItemTitle) {
			[[tableEncodingButton menu] insertItem:[NSMenuItem separatorItem] atIndex:2];
			[tableEncodingButton insertItemWithTitle:utf8MenuItemTitle atIndex:2];
		}
	}
	else {
		[tableEncodingButton setEnabled:NO];
	}

	[NSApp beginSheet:tableSheet
	   modalForWindow:[tableDocumentInstance parentWindow]
		modalDelegate:self
	   didEndSelector:@selector(sheetDidEnd:returnCode:contextInfo:)
		  contextInfo:@"addTable"];
}

/**
 * Closes the current sheet and stops the modal session
 */
- (IBAction)closeSheet:(id)sender
{
	[NSApp endSheet:[sender window] returnCode:[sender tag]];
	[[sender window] orderOut:self];
}

/**
 * Invoked when user hits the remove button alert sheet to ask user if he really wants to delete the table.
 */
- (IBAction)removeTable:(id)sender
{
	if (![tablesListView numberOfSelectedRows])
		return;

	[[tableDocumentInstance parentWindow] endEditingFor:nil];

	NSAlert *alert = [NSAlert alertWithMessageText:@"" defaultButton:NSLocalizedString(@"Delete", @"delete button") alternateButton:NSLocalizedString(@"Cancel", @"cancel button") otherButton:nil informativeTextWithFormat:@""];

	[alert setAlertStyle:NSCriticalAlertStyle];

	NSArray *buttons = [alert buttons];

	// Change the alert's cancel button to have the key equivalent of return
	[[buttons objectAtIndex:0] setKeyEquivalent:@"d"];
	[[buttons objectAtIndex:0] setKeyEquivalentModifierMask:NSCommandKeyMask];
	[[buttons objectAtIndex:1] setKeyEquivalent:@"\r"];

	NSIndexSet *indexes = [tablesListView selectedRowIndexes];

	NSString *tblTypes = @"";
	NSUInteger currentIndex = [indexes lastIndex];

	if ([tablesListView numberOfSelectedRows] == 1) {
		if([[filteredTableTypes objectAtIndex:currentIndex] integerValue] == SPTableTypeView)
			tblTypes = NSLocalizedString(@"view", @"view");
		else if([[filteredTableTypes objectAtIndex:currentIndex] integerValue] == SPTableTypeTable)
			tblTypes = NSLocalizedString(@"table", @"table");
		else if([[filteredTableTypes objectAtIndex:currentIndex] integerValue] == SPTableTypeProc)
			tblTypes = NSLocalizedString(@"procedure", @"procedure");
		else if([[filteredTableTypes objectAtIndex:currentIndex] integerValue] == SPTableTypeFunc)
			tblTypes = NSLocalizedString(@"function", @"function");

		[alert setMessageText:[NSString stringWithFormat:NSLocalizedString(@"Delete %@ '%@'?", @"delete table/view message"), tblTypes, [filteredTables objectAtIndex:[tablesListView selectedRow]]]];
		[alert setInformativeText:[NSString stringWithFormat:NSLocalizedString(@"Are you sure you want to delete the %@ '%@'? This operation cannot be undone.", @"delete table/view informative message"), tblTypes, [filteredTables objectAtIndex:[tablesListView selectedRow]]]];
	}
	else {

		BOOL areTableTypeEqual = YES;
		NSInteger lastType = [[filteredTableTypes objectAtIndex:currentIndex] integerValue];
		while (currentIndex != NSNotFound)
		{
			if([[filteredTableTypes objectAtIndex:currentIndex] integerValue]!=lastType)
			{
				areTableTypeEqual = NO;
				break;
			}
			currentIndex = [indexes indexLessThanIndex:currentIndex];
		}
		if(areTableTypeEqual)
		{
			switch(lastType) {
				case SPTableTypeTable:
				tblTypes = NSLocalizedString(@"tables", @"tables");
				break;
				case SPTableTypeView:
				tblTypes = NSLocalizedString(@"views", @"views");
				break;
				case SPTableTypeProc:
				tblTypes = NSLocalizedString(@"procedures", @"procedures");
				break;
				case SPTableTypeFunc:
				tblTypes = NSLocalizedString(@"functions", @"functions");
				break;
			}

		} else
			tblTypes = NSLocalizedString(@"items", @"items");

		[alert setMessageText:[NSString stringWithFormat:NSLocalizedString(@"Delete selected %@?", @"delete tables/views message"), tblTypes]];
		[alert setInformativeText:[NSString stringWithFormat:NSLocalizedString(@"Are you sure you want to delete the selected %@? This operation cannot be undone.", @"delete tables/views informative message"), tblTypes]];
	}

	[alert beginSheetModalForWindow:[tableDocumentInstance parentWindow] modalDelegate:self didEndSelector:@selector(sheetDidEnd:returnCode:contextInfo:) contextInfo:@"removeRow"];
}

/**
 * Copies a table/view/proc/func, if desired with content
 */
- (IBAction)copyTable:(id)sender
{
	NSString *tableType = @"";

	if ([tablesListView numberOfSelectedRows] != 1) return;
	if (![tableSourceInstance saveRowOnDeselect] || ![tableContentInstance saveRowOnDeselect]) return;

	[[tableDocumentInstance parentWindow] endEditingFor:nil];

	// Detect table type: table or view
	NSInteger tblType = [[filteredTableTypes objectAtIndex:[tablesListView selectedRow]] integerValue];

	switch (tblType){
		case SPTableTypeTable:
			tableType = NSLocalizedString(@"table",@"table");
			[copyTableContentSwitch setEnabled:YES];
			break;
		case SPTableTypeView:
			tableType = NSLocalizedString(@"view",@"view");
			[copyTableContentSwitch setEnabled:NO];
			break;
		case SPTableTypeProc:
			tableType = NSLocalizedString(@"procedure",@"procedure");
			[copyTableContentSwitch setEnabled:NO];
			break;
		case SPTableTypeFunc:
			tableType = NSLocalizedString(@"function",@"function");
			[copyTableContentSwitch setEnabled:NO];
			break;
	}

	[copyTableMessageField setStringValue:[NSString stringWithFormat:NSLocalizedString(@"Duplicate %@ '%@' to:", @"duplicate object message"), tableType, [self tableName]]];

	//open copyTableSheet
	[copyTableNameField setStringValue:[NSString stringWithFormat:@"%@_copy", [filteredTables objectAtIndex:[tablesListView selectedRow]]]];
	[copyTableContentSwitch setState:NSOffState];

	[NSApp beginSheet:copyTableSheet
	   modalForWindow:[tableDocumentInstance parentWindow]
		modalDelegate:self
	   didEndSelector:@selector(sheetDidEnd:returnCode:contextInfo:)
		  contextInfo:@"copyTable"];
}

/**
 * This action starts editing the table name in the table list
 */
- (IBAction)renameTable:(id)sender
{
	if ((![tableSourceInstance saveRowOnDeselect]) || (![tableContentInstance saveRowOnDeselect]) || (![tableDocumentInstance database])) {
		return;
	}

	[[tableDocumentInstance parentWindow] endEditingFor:nil];

    if ([tablesListView numberOfSelectedRows] != 1) return;
    if (![[self tableName] length]) return;

    [tablesListView editColumn:0 row:[tablesListView selectedRow] withEvent:nil select:YES];

    /*

    [tableRenameField setStringValue:[self tableName]];
	[renameTableButton setEnabled:NO];

	NSString *tableType;

	switch([self tableType]){
		case SPTableTypeTable:
		tableType = NSLocalizedString(@"table",@"table");
		break;
		case SPTableTypeView:
		tableType = NSLocalizedString(@"view",@"view");
		break;
		case SPTableTypeProc:
		tableType = NSLocalizedString(@"procedure",@"procedure");
		break;
		case SPTableTypeFunc:
		tableType = NSLocalizedString(@"function",@"function");
		break;
	}

	[tableRenameText setStringValue:[NSString stringWithFormat:NSLocalizedString(@"Rename %@ '%@' to:",@"rename item name to:"), tableType, [self tableName]]];


	[NSApp beginSheet:tableRenameSheet
	   modalForWindow:[tableDocumentInstance parentWindow]
		modalDelegate:self
	   didEndSelector:@selector(sheetDidEnd:returnCode:contextInfo:)
		  contextInfo:@"renameTable"];
    */
}

/**
 * Truncates the currently selected table(s).
 */
- (IBAction)truncateTable:(id)sender
{
	if (![tablesListView numberOfSelectedRows])
		return;

	[[tableDocumentInstance parentWindow] endEditingFor:nil];

	NSAlert *alert = [NSAlert alertWithMessageText:@""
									 defaultButton:NSLocalizedString(@"Truncate", @"truncate button")
								   alternateButton:NSLocalizedString(@"Cancel", @"cancel button")
									   otherButton:nil
						 informativeTextWithFormat:@""];

	[alert setAlertStyle:NSCriticalAlertStyle];

	NSArray *buttons = [alert buttons];

	// Change the alert's cancel button to have the key equivalent of return
	[[buttons objectAtIndex:0] setKeyEquivalent:@"t"];
	[[buttons objectAtIndex:0] setKeyEquivalentModifierMask:NSCommandKeyMask];
	[[buttons objectAtIndex:1] setKeyEquivalent:@"\r"];

	if ([tablesListView numberOfSelectedRows] == 1) {
		[alert setMessageText:[NSString stringWithFormat:NSLocalizedString(@"Truncate table '%@'?", @"truncate table message"), [filteredTables objectAtIndex:[tablesListView selectedRow]]]];
		[alert setInformativeText:[NSString stringWithFormat:NSLocalizedString(@"Are you sure you want to delete ALL records in the table '%@'? This operation cannot be undone.", @"truncate table informative message"), [filteredTables objectAtIndex:[tablesListView selectedRow]]]];
	}
	else {
		[alert setMessageText:NSLocalizedString(@"Truncate selected tables?", @"truncate tables message")];
		[alert setInformativeText:NSLocalizedString(@"Are you sure you want to delete ALL records in the selected tables? This operation cannot be undone.", @"truncate tables informative message")];
	}

	[alert beginSheetModalForWindow:[tableDocumentInstance parentWindow] modalDelegate:self didEndSelector:@selector(sheetDidEnd:returnCode:contextInfo:) contextInfo:@"truncateTable"];
}

/**
 * Toggle whether the splitview is collapsed.
 */
- (IBAction)togglePaneCollapse:(id)sender
{
	[tableListSplitView toggleCollapse:sender];

	[[NSUserDefaults standardUserDefaults] setObject:[NSNumber numberWithBool:([tableInfoCollapseButton state] == NSOffState)] forKey:SPTableInformationPanelCollapsed];
	[tableInfoCollapseButton setToolTip:([tableInfoCollapseButton state] == NSOffState) ? NSLocalizedString(@"Show Table Information", @"Show Table Information") : NSLocalizedString(@"Hide Table Information", @"Hide Table Information")];
}

#pragma mark -
#pragma mark Alert sheet methods

/**
 * Method for alert sheets.
 */
- (void)sheetDidEnd:(id)sheet returnCode:(NSInteger)returnCode contextInfo:(NSString *)contextInfo
{
	// Order out current sheet to suppress overlapping of sheets
	if ([sheet respondsToSelector:@selector(orderOut:)])
		[sheet orderOut:nil];
	else if ([sheet respondsToSelector:@selector(window)])
		[[sheet window] orderOut:nil];

	if ([contextInfo isEqualToString:@"addRow"]) {
		alertSheetOpened = NO;
	}
	else if ([contextInfo isEqualToString:@"removeRow"]) {
		if (returnCode == NSAlertDefaultReturn) {
			[self performSelector:@selector(removeTable) withObject:nil afterDelay:0.0];
		}
	}
	else if ([contextInfo isEqualToString:@"truncateTable"]) {
		if (returnCode == NSAlertDefaultReturn) {
			[self truncateTable];
		}
	}
	else if ([contextInfo isEqualToString:@"addTable"]) {
		if (returnCode == NSOKButton) {
			[self addTable];
		}
	}
	else if ([contextInfo isEqualToString:@"copyTable"]) {
		if (returnCode == NSOKButton) {
			[self copyTable];
		}
	}
}

#pragma mark -
#pragma mark Additional methods

/**
 * Sets the connection (received from SPDatabaseDocument) and makes things that have to be done only once
 */
- (void)setConnection:(MCPConnection *)theConnection
{
	mySQLConnection = theConnection;
	[self updateTables:self];
}

/**
 * Selects customQuery tab and passes query to customQueryInstance
 */
- (void)doPerformQueryService:(NSString *)query
{
	[tabView selectTabViewItemAtIndex:2];
	[customQueryInstance doPerformQueryService:query];
}

/**
 * Performs interface validation for various controls.
 */
- (void)controlTextDidChange:(NSNotification *)notification
{
	id object = [notification object];

	if (object == tableNameField) {
		[addTableButton setEnabled:[self isTableNameValid:[tableNameField stringValue] forType: SPTableTypeTable]];
	}

	else if (object == copyTableNameField) {
		[copyTableButton setEnabled:[self isTableNameValid:[copyTableNameField stringValue] forType:[self tableType]]];
	}
}

/**
 * Controls the NSTextField's press RETURN event of Add/Rename/Duplicate sheets
 */
- (void)controlTextDidEndEditing:(NSNotification *)notification
{
	id object = [notification object];

	// Only RETURN/ENTER will be recognized for Add/Rename/Duplicate sheets to
	// activate the Add/Rename/Duplicate buttons
	if([[[notification userInfo] objectForKey:@"NSTextMovement"] integerValue] != 0)
		return;

	if (object == tableNameField) {
		[addTableButton performClick:object];
	}
	else if (object == copyTableNameField) {
		[copyTableButton performClick:object];
	}
}

/**
 * Updates the current table selection.  Triggered most times tableViewSelectionDidChange:
 * fires, and also as a result of certain table actions.
 */
- (void)updateSelectionWithTaskString:(NSString *)taskString
{
	if (![mySQLConnection isConnected] || [tablesListView selectedRow] < 0) {
		return;
	}
	id selectedItem = [filteredTables objectAtIndex:[tablesListView selectedRow]];
	if(![selectedItem isKindOfClass:[NSString class]]) {
		return;
	}

	// If there is a multiple or blank selection, clear all views directly.
	if ( [tablesListView numberOfSelectedRows] != 1 || ![(NSString *)selectedItem length] ) {

		// Update the selection variables and the interface
		[self performSelectorOnMainThread:@selector(setSelection:) withObject:nil waitUntilDone:YES];

		// Add a history entry
		[spHistoryControllerInstance updateHistoryEntries];

		// Notify listeners of the table change now that the state is fully set up
		[[NSNotificationCenter defaultCenter] postNotificationOnMainThreadWithName:SPTableChangedNotification object:tableDocumentInstance];

		return;
	}

	// Otherwise, set up a task
	[tableDocumentInstance startTaskWithDescription:taskString];

	// If on the main thread, fire up a thread to deal with view changes and data loading, else perform inline
	if ([NSThread isMainThread]) {
		[NSThread detachNewThreadSelector:@selector(updateSelectionTask) toTarget:self withObject:nil];
	} else {
		[self updateSelectionTask];
	}
}

- (void) updateSelectionTask
{
	NSAutoreleasePool *selectionChangePool = [[NSAutoreleasePool alloc] init];
	NSString *tableEncoding = nil;
	NSString *previousEncoding = [mySQLConnection encoding];
	BOOL changeEncoding = ![previousEncoding isEqualToString:@"utf8"];
	if (changeEncoding) {
		[mySQLConnection storeEncodingForRestoration];
		[mySQLConnection setEncoding:@"utf8"];
	}

	// Update selection variables and interface
	NSDictionary *selectionDetails = [NSDictionary dictionaryWithObjectsAndKeys:
										[filteredTables objectAtIndex:[tablesListView selectedRow]], @"name",
										[filteredTableTypes objectAtIndex:[tablesListView selectedRow]], @"type",
										nil];
	[self performSelectorOnMainThread:@selector(setSelection:) withObject:selectionDetails waitUntilDone:YES];

	// Ensure status information is cached on the working thread
	[tableDataInstance updateStatusInformationForCurrentTable];

	// Check the encoding if appropriate to determine if an encoding change is required
	if( selectedTableType == SPTableTypeView || selectedTableType == SPTableTypeTable) {

		// tableEncoding == nil indicates that there was an error while retrieving table data
		tableEncoding = [tableDataInstance tableEncoding];

		// If encoding is set to Autodetect, update the connection character set encoding
		// based on the newly selected table's encoding - but only if it differs from the current encoding.
		if ([[[NSUserDefaults standardUserDefaults] objectForKey:SPDefaultEncoding] intValue] == SPEncodingAutodetect) {
			if (tableEncoding != nil && ![tableEncoding isEqualToString:previousEncoding]) {
				[tableDocumentInstance setConnectionEncoding:tableEncoding reloadingViews:NO];
				changeEncoding = NO;
			}
		}
	}

	if (changeEncoding) [mySQLConnection restoreStoredEncoding];

	// Notify listeners of the table change now that the state is fully set up.
	[[NSNotificationCenter defaultCenter] postNotificationOnMainThreadWithName:SPTableChangedNotification object:tableDocumentInstance];

	// Restore view states as appropriate
	[spHistoryControllerInstance restoreViewStates];

	structureLoaded = NO;
	contentLoaded = NO;
	statusLoaded = NO;
	triggersLoaded = NO;
	if( selectedTableType == SPTableTypeView || selectedTableType == SPTableTypeTable) {
		if ( [tabView indexOfTabViewItem:[tabView selectedTabViewItem]] == SPTableViewStructure ) {
			[tableSourceInstance loadTable:selectedTableName];
			structureLoaded = YES;
		} else if ( [tabView indexOfTabViewItem:[tabView selectedTabViewItem]] == SPTableViewContent ) {
			if(tableEncoding == nil) {
				[tableContentInstance loadTable:nil];
			} else {
				[tableContentInstance loadTable:selectedTableName];
			}
			contentLoaded = YES;
		} else if ( [tabView indexOfTabViewItem:[tabView selectedTabViewItem]] == SPTableViewStatus ) {
			[[extendedTableInfoInstance onMainThread] loadTable:selectedTableName];
			statusLoaded = YES;
		} else if ( [tabView indexOfTabViewItem:[tabView selectedTabViewItem]] == SPTableViewTriggers ) {
			[[tableTriggersInstance onMainThread] loadTriggers];
			triggersLoaded = YES;
		}
	} else {

		// if we are not looking at a table or view, clear these
		[tableSourceInstance loadTable:nil];
		[tableContentInstance loadTable:nil];
		[[extendedTableInfoInstance onMainThread] loadTable:nil];
		[[tableTriggersInstance onMainThread] loadTriggers];
	}

	// Update the "Show Create Syntax" window if it's already opened
	// according to the selected table/view/proc/func
	if([[tableDocumentInstance getCreateTableSyntaxWindow] isVisible])
		[tableDocumentInstance performSelectorOnMainThread:@selector(showCreateTableSyntax:) withObject:self waitUntilDone:YES];

	// Add a history entry
	[spHistoryControllerInstance updateHistoryEntries];

	// Empty the loading pool and exit the thread
	[tableDocumentInstance endTask];
	[selectionChangePool drain];
}

/**
 * Takes a dictionary of selection details, containing the selection name
 * and type, and updates stored variables and the table list interface to
 * match.
 * Should be called on the main thread.
 */
- (void)setSelection:(NSDictionary *)selectionDetails
{
	// First handle empty or multiple selections
	if (!selectionDetails || ![selectionDetails objectForKey:@"name"]) {
		NSIndexSet *indexes = [tablesListView selectedRowIndexes];

		// Update the selected table name and type
		if (selectedTableName) [selectedTableName release];

		if ([indexes count]) {
			selectedTableName = [[NSString alloc] initWithString:@""];
		}
		else {
			selectedTableName = nil;
		}

		selectedTableType = SPTableTypeNone;

		[tableSourceInstance loadTable:nil];
		[tableContentInstance loadTable:nil];
		[extendedTableInfoInstance loadTable:nil];
		[tableTriggersInstance loadTriggers];

		structureLoaded = NO;
		contentLoaded = NO;
		statusLoaded = NO;
		triggersLoaded = NO;

		// Set gear menu items Remove/Duplicate table/view according to the table types
		// if at least one item is selected
		if ([indexes count]) {

			NSUInteger currentIndex = [indexes lastIndex];
			BOOL areTableTypeEqual = YES;
			NSInteger lastType = [[filteredTableTypes objectAtIndex:currentIndex] integerValue];

			while (currentIndex != NSNotFound)
			{
				if ([[filteredTableTypes objectAtIndex:currentIndex] integerValue] != lastType) {
					areTableTypeEqual = NO;
					break;
				}

				currentIndex = [indexes indexLessThanIndex:currentIndex];
			}

			if (areTableTypeEqual) {
				switch (lastType) {
					case SPTableTypeTable:
					[removeTableMenuItem setTitle:NSLocalizedString(@"Delete Tables", @"delete tables menu title")];
					[truncateTableButton setTitle:NSLocalizedString(@"Truncate Tables", @"truncate tables menu item")];
					[removeTableContextMenuItem setTitle:NSLocalizedString(@"Delete Tables", @"delete tables menu title")];
					[truncateTableContextButton setTitle:NSLocalizedString(@"Truncate Tables", @"truncate tables menu item")];
					[truncateTableButton setHidden:NO];
					[truncateTableContextButton setHidden:NO];
					break;
					case SPTableTypeView:
					[removeTableMenuItem setTitle:NSLocalizedString(@"Delete Views", @"delete views menu title")];
					[removeTableContextMenuItem setTitle:NSLocalizedString(@"Delete Views", @"delete views menu title")];
					[truncateTableButton setHidden:YES];
					[truncateTableContextButton setHidden:YES];
					break;
					case SPTableTypeProc:
					[removeTableMenuItem setTitle:NSLocalizedString(@"Delete Procedures", @"delete procedures menu title")];
					[removeTableContextMenuItem setTitle:NSLocalizedString(@"Delete Procedures", @"delete procedures menu title")];
					[truncateTableButton setHidden:YES];
					[truncateTableContextButton setHidden:YES];
					break;
					case SPTableTypeFunc:
					[removeTableMenuItem setTitle:NSLocalizedString(@"Delete Functions", @"delete functions menu title")];
					[removeTableContextMenuItem setTitle:NSLocalizedString(@"Delete Functions", @"delete functions menu title")];
					[truncateTableButton setHidden:YES];
					[truncateTableContextButton setHidden:YES];
					break;
				}

			} else {
				[removeTableMenuItem setTitle:NSLocalizedString(@"Delete Items", @"delete items menu title")];
				[removeTableContextMenuItem setTitle:NSLocalizedString(@"Delete Items", @"delete items menu title")];
				[truncateTableButton setHidden:YES];
				[truncateTableContextButton setHidden:YES];
			}
		}

		// Context menu
		[renameTableContextMenuItem setHidden:YES];
		[duplicateTableContextMenuItem setHidden:YES];
		[separatorTableContextMenuItem setHidden:YES];
		[separatorTableContextMenuItem2 setHidden:NO];
		[showCreateSyntaxContextMenuItem setTitle:NSLocalizedString(@"Show Create Syntaxes...", @"show create syntaxes menu item")];
		[showCreateSyntaxContextMenuItem setHidden:NO];

		// 'Gear' menu
		[renameTableMenuItem setHidden:YES];
		[duplicateTableMenuItem setHidden:YES];
		[separatorTableMenuItem setHidden:YES];
		[separatorTableMenuItem2 setHidden:NO];
		[showCreateSyntaxMenuItem setTitle:NSLocalizedString(@"Show Create Syntaxes...", @"show create syntaxes menu item")];
		[showCreateSyntaxMenuItem setHidden:NO];

		// Get main menu "Table"'s submenu
		NSMenu *tableSubMenu = [[[NSApp mainMenu] itemWithTag:SPMainMenuTable] submenu];
		[[tableSubMenu itemAtIndex:3] setTitle:NSLocalizedString(@"Copy Create Syntaxes", @"copy create syntaxes menu item")];
		[[tableSubMenu itemAtIndex:4] setTitle:NSLocalizedString(@"Show Create Syntaxes...", @"show create syntaxes menu item")];

		[[tableSubMenu itemAtIndex:6] setTitle:NSLocalizedString(@"Check Selected Items", @"check selected items menu item")];
		[[tableSubMenu itemAtIndex:7] setTitle:NSLocalizedString(@"Repair Selected Items", @"repair selected items menu item")];

		[[tableSubMenu itemAtIndex:9] setTitle:NSLocalizedString(@"Analyze Selected Items", @"analyze selected items menu item")];
		[[tableSubMenu itemAtIndex:10] setTitle:NSLocalizedString(@"Optimize Selected Items", @"optimize selected items menu item")];

		[[tableSubMenu itemAtIndex:11] setTitle:NSLocalizedString(@"Flush Selected Items", @"flush selected items menu item")];
		[[tableSubMenu itemAtIndex:12] setTitle:NSLocalizedString(@"Checksum Selected Items", @"checksum selected items menu item")];

		[[tableSubMenu itemAtIndex:3] setHidden:NO];
		[[tableSubMenu itemAtIndex:4] setHidden:NO];
		[[tableSubMenu itemAtIndex:5] setHidden:NO];
		[[tableSubMenu itemAtIndex:6] setHidden:NO];
		[[tableSubMenu itemAtIndex:7] setHidden:NO];
		[[tableSubMenu itemAtIndex:8] setHidden:NO];
		[[tableSubMenu itemAtIndex:9] setHidden:NO];
		[[tableSubMenu itemAtIndex:10] setHidden:NO];

		// set window title
		[tableDocumentInstance updateWindowTitle:self];

		return;
	}

	// If a new selection has been provided, store variables and update the interface to match
	NSString *selectedItemName = [selectionDetails objectForKey:@"name"];
	NSInteger selectedItemType = [[selectionDetails objectForKey:@"type"] integerValue];

	// Update the selected table name and type
	if (selectedTableName) [selectedTableName release];
	selectedTableName = [[NSString alloc] initWithString:selectedItemName];
	selectedTableType = selectedItemType;

	// Remove the "current selection" item for filtered lists if appropriate
	if (isTableListFiltered && [tablesListView selectedRow] < [filteredTables count] - 2 && [filteredTables count] > 2
		&& [[filteredTableTypes objectAtIndex:[filteredTableTypes count]-2] integerValue] == SPTableTypeNone
		&& [[filteredTables objectAtIndex:[filteredTables count]-2] isEqualToString:NSLocalizedString(@"CURRENT SELECTION",@"header for current selection in filtered list")])
	{
		[filteredTables removeObjectsInRange:NSMakeRange([filteredTables count]-2, 2)];
		[filteredTableTypes removeObjectsInRange:NSMakeRange([filteredTableTypes count]-2, 2)];
		[tablesListView reloadData];
	}

	// Reset the table information caches
	[tableDataInstance resetAllData];

	// Show menu separatoes
	[separatorTableMenuItem setHidden:NO];
	[separatorTableContextMenuItem setHidden:NO];
	[separatorTableMenuItem2 setHidden:NO];
	[separatorTableContextMenuItem2 setHidden:NO];

	// Set gear menu items Remove/Duplicate table/view and mainMenu > Table items
	// according to the table types
	NSMenu *tableSubMenu = [[[NSApp mainMenu] itemWithTag:SPMainMenuTable] submenu];

	// Enable/disable the various menu items depending on the selected item. Also update their titles.
	// Note, that this should ideally be moved to menu item validation as opposed to using fixed item positions.
	if (selectedTableType == SPTableTypeView)
	{
		// Change mainMenu > Table > ... according to table type
		[[tableSubMenu itemAtIndex:3] setTitle:NSLocalizedString(@"Copy Create View Syntax", @"copy create view syntax menu item")];
		[[tableSubMenu itemAtIndex:4] setTitle:NSLocalizedString(@"Show Create View Syntax...", @"show create view syntax menu item")];
		[[tableSubMenu itemAtIndex:5] setHidden:NO]; // Divider
		[[tableSubMenu itemAtIndex:6] setHidden:NO];
		[[tableSubMenu itemAtIndex:6] setTitle:NSLocalizedString(@"Check View", @"check view menu item")];
		[[tableSubMenu itemAtIndex:7] setHidden:YES]; // Repair
		[[tableSubMenu itemAtIndex:8] setHidden:YES]; // Divider
		[[tableSubMenu itemAtIndex:9] setHidden:YES]; // Analyse
		[[tableSubMenu itemAtIndex:10] setHidden:YES]; // Optimize
		[[tableSubMenu itemAtIndex:11] setHidden:NO];
		[[tableSubMenu itemAtIndex:11] setTitle:NSLocalizedString(@"Flush View", @"flush view menu item")];
		[[tableSubMenu itemAtIndex:12] setHidden:YES]; // Checksum

		[renameTableMenuItem setHidden:NO]; // we don't have to check the mysql version
		[renameTableMenuItem setTitle:NSLocalizedString(@"Rename View...", @"rename view menu title")];
		[duplicateTableMenuItem setHidden:NO];
		[duplicateTableMenuItem setTitle:NSLocalizedString(@"Duplicate View...", @"duplicate view menu title")];
		[truncateTableButton setHidden:YES];
		[removeTableMenuItem setTitle:NSLocalizedString(@"Delete View", @"delete view menu title")];
		[showCreateSyntaxMenuItem setHidden:NO];
		[showCreateSyntaxMenuItem setTitle:NSLocalizedString(@"Show Create View Syntax...", @"show create view syntax menu item")];

		[renameTableContextMenuItem setHidden:NO]; // we don't have to check the mysql version
		[renameTableContextMenuItem setTitle:NSLocalizedString(@"Rename View...", @"rename view menu title")];
		[duplicateTableContextMenuItem setHidden:NO];
		[duplicateTableContextMenuItem setTitle:NSLocalizedString(@"Duplicate View...", @"duplicate view menu title")];
		[truncateTableContextButton setHidden:YES];
		[removeTableContextMenuItem setTitle:NSLocalizedString(@"Delete View", @"delete view menu title")];
		[showCreateSyntaxContextMenuItem setHidden:NO];
		[showCreateSyntaxContextMenuItem setTitle:NSLocalizedString(@"Show Create View Syntax...", @"show create view syntax menu item")];
	}
	else if (selectedTableType == SPTableTypeTable) {
		[[tableSubMenu itemAtIndex:3] setTitle:NSLocalizedString(@"Copy Create Table Syntax", @"copy create table syntax menu item")];
		[[tableSubMenu itemAtIndex:4] setTitle:NSLocalizedString(@"Show Create Table Syntax...", @"show create table syntax menu item")];
		[[tableSubMenu itemAtIndex:5] setHidden:NO]; // divider
		[[tableSubMenu itemAtIndex:6] setHidden:NO];
		[[tableSubMenu itemAtIndex:6] setTitle:NSLocalizedString(@"Check Table", @"check table menu item")];
		[[tableSubMenu itemAtIndex:7] setHidden:NO];
		[[tableSubMenu itemAtIndex:7] setTitle:NSLocalizedString(@"Repair Table", @"repair table menu item")];
		[[tableSubMenu itemAtIndex:8] setHidden:NO]; // divider
		[[tableSubMenu itemAtIndex:9] setHidden:NO];
		[[tableSubMenu itemAtIndex:9] setTitle:NSLocalizedString(@"Analyze Table", @"analyze table menu item")];
		[[tableSubMenu itemAtIndex:10] setHidden:NO];
		[[tableSubMenu itemAtIndex:10] setTitle:NSLocalizedString(@"Optimize Table", @"optimize table menu item")];
		[[tableSubMenu itemAtIndex:11] setHidden:NO];
		[[tableSubMenu itemAtIndex:11] setTitle:NSLocalizedString(@"Flush Table", @"flush table menu item")];
		[[tableSubMenu itemAtIndex:12] setHidden:NO];
		[[tableSubMenu itemAtIndex:12] setTitle:NSLocalizedString(@"Checksum Table", @"checksum table menu item")];

		[renameTableMenuItem setHidden:NO];
		[renameTableMenuItem setTitle:NSLocalizedString(@"Rename Table...", @"rename table menu title")];
		[duplicateTableMenuItem setHidden:NO];
		[duplicateTableMenuItem setTitle:NSLocalizedString(@"Duplicate Table...", @"duplicate table menu title")];
		[truncateTableButton setHidden:NO];
		[truncateTableButton setTitle:NSLocalizedString(@"Truncate Table", @"truncate table menu title")];
		[removeTableMenuItem setTitle:NSLocalizedString(@"Delete Table", @"delete table menu title")];
		[showCreateSyntaxMenuItem setHidden:NO];
		[showCreateSyntaxMenuItem setTitle:NSLocalizedString(@"Show Create Table Syntax...", @"show create table syntax menu item")];

		[renameTableContextMenuItem setHidden:NO];
		[renameTableContextMenuItem setTitle:NSLocalizedString(@"Rename Table...", @"rename table menu title")];
		[duplicateTableContextMenuItem setHidden:NO];
		[duplicateTableContextMenuItem setTitle:NSLocalizedString(@"Duplicate Table...", @"duplicate table menu title")];
		[truncateTableContextButton setHidden:NO];
		[truncateTableContextButton setTitle:NSLocalizedString(@"Truncate Table", @"truncate table menu title")];
		[removeTableContextMenuItem setTitle:NSLocalizedString(@"Delete Table", @"delete table menu title")];
		[showCreateSyntaxContextMenuItem setHidden:NO];
		[showCreateSyntaxContextMenuItem setTitle:NSLocalizedString(@"Show Create Table Syntax...", @"show create table syntax menu item")];
	}
	else if (selectedTableType == SPTableTypeProc) {
		[[tableSubMenu itemAtIndex:3] setTitle:NSLocalizedString(@"Copy Create Procedure Syntax", @"copy create proc syntax menu item")];
		[[tableSubMenu itemAtIndex:4] setTitle:NSLocalizedString(@"Show Create Procedure Syntax...", @"show create proc syntax menu item")];
		[[tableSubMenu itemAtIndex:5] setHidden:YES]; // divider
		[[tableSubMenu itemAtIndex:6] setHidden:YES]; // copy columns
		[[tableSubMenu itemAtIndex:7] setHidden:YES]; // divider
		[[tableSubMenu itemAtIndex:8] setHidden:YES];
		[[tableSubMenu itemAtIndex:9] setHidden:YES];
		[[tableSubMenu itemAtIndex:10] setHidden:YES]; // divider
		[[tableSubMenu itemAtIndex:11] setHidden:YES];
		[[tableSubMenu itemAtIndex:12] setHidden:YES];

		[renameTableMenuItem setHidden:NO];
		[renameTableMenuItem setTitle:NSLocalizedString(@"Rename Procedure...", @"rename proc menu title")];
		[duplicateTableMenuItem setHidden:NO];
		[duplicateTableMenuItem setTitle:NSLocalizedString(@"Duplicate Procedure...", @"duplicate proc menu title")];
		[truncateTableButton setHidden:YES];
		[removeTableMenuItem setTitle:NSLocalizedString(@"Delete Procedure", @"delete proc menu title")];
		[showCreateSyntaxMenuItem setHidden:NO];
		[showCreateSyntaxMenuItem setTitle:NSLocalizedString(@"Show Create Procedure Syntax...", @"show create proc syntax menu item")];

		[renameTableContextMenuItem setHidden:NO];
		[renameTableContextMenuItem setTitle:NSLocalizedString(@"Rename Procedure...", @"rename proc menu title")];
		[duplicateTableContextMenuItem setHidden:NO];
		[duplicateTableContextMenuItem setTitle:NSLocalizedString(@"Duplicate Procedure...", @"duplicate proc menu title")];
		[truncateTableContextButton setHidden:YES];
		[removeTableContextMenuItem setTitle:NSLocalizedString(@"Delete Procedure", @"delete proc menu title")];
		[showCreateSyntaxContextMenuItem setHidden:NO];
		[showCreateSyntaxContextMenuItem setTitle:NSLocalizedString(@"Show Create Procedure Syntax...", @"show create proc syntax menu item")];
	}
	else if (selectedTableType == SPTableTypeFunc) {
		[[tableSubMenu itemAtIndex:3] setTitle:NSLocalizedString(@"Copy Create Function Syntax", @"copy create func syntax menu item")];
		[[tableSubMenu itemAtIndex:4] setTitle:NSLocalizedString(@"Show Create Function Syntax...", @"show create func syntax menu item")];
		[[tableSubMenu itemAtIndex:5] setHidden:YES]; // divider
		[[tableSubMenu itemAtIndex:6] setHidden:YES]; // copy columns
		[[tableSubMenu itemAtIndex:7] setHidden:YES]; // divider
		[[tableSubMenu itemAtIndex:8] setHidden:YES];
		[[tableSubMenu itemAtIndex:9] setHidden:YES];
		[[tableSubMenu itemAtIndex:10] setHidden:YES]; // divider
		[[tableSubMenu itemAtIndex:11] setHidden:YES];
		[[tableSubMenu itemAtIndex:12] setHidden:YES];

		[renameTableMenuItem setHidden:NO];
		[renameTableMenuItem setTitle:NSLocalizedString(@"Rename Function...", @"rename func menu title")];
		[duplicateTableMenuItem setHidden:NO];
		[duplicateTableMenuItem setTitle:NSLocalizedString(@"Duplicate Function...", @"duplicate func menu title")];
		[truncateTableButton setHidden:YES];
		[removeTableMenuItem setTitle:NSLocalizedString(@"Delete Function", @"delete func menu title")];
		[showCreateSyntaxMenuItem setHidden:NO];
		[showCreateSyntaxMenuItem setTitle:NSLocalizedString(@"Show Create Function Syntax...", @"show create func syntax menu item")];

		[renameTableContextMenuItem setHidden:NO];
		[renameTableContextMenuItem setTitle:NSLocalizedString(@"Rename Function...", @"rename func menu title")];
		[duplicateTableContextMenuItem setHidden:NO];
		[duplicateTableContextMenuItem setTitle:NSLocalizedString(@"Duplicate Function...", @"duplicate func menu title")];
		[truncateTableContextButton setHidden:YES];
		[removeTableContextMenuItem setTitle:NSLocalizedString(@"Delete Function", @"delete func menu title")];
		[showCreateSyntaxContextMenuItem setHidden:NO];
		[showCreateSyntaxContextMenuItem setTitle:NSLocalizedString(@"Show Create Function Syntax...", @"show create func syntax menu item")];
	}

	// set window title
	[tableDocumentInstance updateWindowTitle:self];
}

#pragma mark -
#pragma mark Getter methods


- (NSArray *)selectedTableNames
{
	NSIndexSet *indexes = [tablesListView selectedRowIndexes];

	NSUInteger currentIndex = [indexes firstIndex];
	NSMutableArray *selTables = [NSMutableArray array];

	while (currentIndex != NSNotFound) {
		if([[filteredTableTypes objectAtIndex:currentIndex] integerValue] == SPTableTypeTable)
			[selTables addObject:[filteredTables objectAtIndex:currentIndex]];
		currentIndex = [indexes indexGreaterThanIndex:currentIndex];
	}
	return selTables;
}

- (NSArray *)selectedTableItems
{
	NSIndexSet *indexes = [tablesListView selectedRowIndexes];

	NSUInteger currentIndex = [indexes firstIndex];
	NSMutableArray *selTables = [NSMutableArray array];

	while (currentIndex != NSNotFound) {
		[selTables addObject:[filteredTables objectAtIndex:currentIndex]];
		currentIndex = [indexes indexGreaterThanIndex:currentIndex];
	}
	return selTables;
}

- (NSArray *)selectedTableTypes
{
	NSIndexSet *indexes = [tablesListView selectedRowIndexes];

	NSUInteger currentIndex = [indexes firstIndex];
	NSMutableArray *selTables = [NSMutableArray array];

	while (currentIndex != NSNotFound) {
		[selTables addObject:[filteredTableTypes objectAtIndex:currentIndex]];
		currentIndex = [indexes indexGreaterThanIndex:currentIndex];
	}
	return selTables;
}

/**
 * Returns the currently selected table or nil if no table or mulitple tables are selected
 */
- (NSString *)tableName
{
	return selectedTableName;
}

/**
 * Returns the currently selected table type, or -1 if no table or multiple tables are selected
 */
- (NSInteger) tableType
{
	return selectedTableType;
}

/**
 * Database tables accessor
 */
- (NSArray *)tables
{
	return tables;
}

/**
 * Database tables accessors for a given table type
 */
- (NSArray *)allTableAndViewNames
{
	NSMutableArray *returnArray = [NSMutableArray array];
	NSInteger i;
	NSInteger cnt = [[self tables] count];
	for(i=0; i<cnt; i++) {
		if([NSArrayObjectAtIndex([self tableTypes],i) integerValue] == SPTableTypeTable || [NSArrayObjectAtIndex([self tableTypes],i) integerValue] == SPTableTypeView)
			[returnArray addObject:NSArrayObjectAtIndex([self tables], i)];
	}
	return returnArray;
}
- (NSArray *)allTableNames
{
	NSMutableArray *returnArray = [NSMutableArray array];
	NSInteger i;
	NSInteger cnt = [[self tables] count];
	for(i=0; i<cnt; i++) {
		if([NSArrayObjectAtIndex([self tableTypes],i) integerValue] == SPTableTypeTable)
			[returnArray addObject:NSArrayObjectAtIndex([self tables], i)];
	}
	return returnArray;
}
- (NSArray *)allViewNames
{
	NSMutableArray *returnArray = [NSMutableArray array];
	NSInteger i;
	NSInteger cnt = [[self tables] count];
	for(i=0; i<cnt; i++) {
		if([NSArrayObjectAtIndex([self tableTypes],i) integerValue] == SPTableTypeView)
			[returnArray addObject:NSArrayObjectAtIndex([self tables], i)];
	}
	[returnArray sortUsingSelector:@selector(compare:)];
	return returnArray;
}
- (NSArray *)allProcedureNames
{
	NSMutableArray *returnArray = [NSMutableArray array];
	NSInteger i;
	NSInteger cnt = [[self tables] count];
	for(i=0; i<cnt; i++) {
		if([NSArrayObjectAtIndex([self tableTypes],i) integerValue] == SPTableTypeProc)
			[returnArray addObject:NSArrayObjectAtIndex([self tables], i)];
	}
	return returnArray;
}
- (NSArray *)allFunctionNames
{
	NSMutableArray *returnArray = [NSMutableArray array];
	NSInteger i;
	NSInteger cnt = [[self tables] count];
	for(i=0; i<cnt; i++) {
		if([NSArrayObjectAtIndex([self tableTypes],i) integerValue] == SPTableTypeFunc)
			[returnArray addObject:NSArrayObjectAtIndex([self tables], i)];
	}
	return returnArray;
}

/**
 * Returns an array of all available database names
 */
- (NSArray *)allDatabaseNames
{
	return [tableDocumentInstance allDatabaseNames];
}

- (NSString *)selectedDatabase
{
	return [tableDocumentInstance database];
}

/**
 * Returns an array of all available database names
 */
- (NSArray *)allSystemDatabaseNames
{
	return [tableDocumentInstance allSystemDatabaseNames];
}

/**
 * Database table types accessor
 */
- (NSArray *)tableTypes
{
	return tableTypes;
}

/**
 * Returns YES if table source has already been loaded
 */
- (BOOL)structureLoaded
{
	return structureLoaded;
}

/**
 * Returns YES if table content has already been loaded
 */
- (BOOL)contentLoaded
{
	return contentLoaded;
}

/**
 * Returns YES if table status has already been loaded
 */
- (BOOL)statusLoaded
{
	return statusLoaded;
}

#pragma mark -
#pragma mark Setter methods

/**
 * Mark the content table for refresh when it's next switched to
 */
- (void)setContentRequiresReload:(BOOL)reload
{
	contentLoaded = !reload;
}

/**
 * Mark the exteded table info for refresh when it's next switched to
 */
- (void)setStatusRequiresReload:(BOOL)reload
{
	statusLoaded = !reload;
}

/**
 * Select an item using the provided name; returns YES if the
 * supplied name could be selected, or NO if not.
 */
- (BOOL)selectItemWithName:(NSString *)theName
{
	NSInteger i, tableType;
	NSInteger itemIndex = NSNotFound;
	NSInteger caseInsensitiveItemIndex = NSNotFound;

	// Loop through the unfiltered tables/views to find the desired item
	for (i = 0; i < [tables count]; i++) {
		tableType = [[tableTypes objectAtIndex:i] integerValue];
		if (tableType == SPTableTypeNone) continue;
		if ([[tables objectAtIndex:i] isEqualToString:theName]) {
			itemIndex = i;
			break;
		}
		if ([[tables objectAtIndex:i] compare:theName options:NSCaseInsensitiveSearch|NSLiteralSearch] == NSOrderedSame)
			caseInsensitiveItemIndex = i;
	}

	// If no case-sensitive match was found, use a case-insensitive match if available
	if (itemIndex == NSNotFound && caseInsensitiveItemIndex != NSNotFound)
		itemIndex = caseInsensitiveItemIndex;

	// If no match found, return failure
	if (itemIndex == NSNotFound) return NO;

	if (!isTableListFiltered) {
		[tablesListView selectRowIndexes:[NSIndexSet indexSetWithIndex:itemIndex] byExtendingSelection:NO];
	} else {
		NSInteger filteredIndex = [filteredTables indexOfObject:[tables objectAtIndex:itemIndex]];
		if (filteredIndex != NSNotFound) {
			[tablesListView selectRowIndexes:[NSIndexSet indexSetWithIndex:filteredIndex] byExtendingSelection:NO];
		} else {
			[tablesListView deselectAll:nil];
			if (selectedTableName) [selectedTableName release];
			selectedTableName = [[NSString alloc] initWithString:[tables objectAtIndex:itemIndex]];
			selectedTableType = [[tableTypes objectAtIndex:itemIndex] integerValue];
			[self updateFilter:self];
			[self updateSelectionWithTaskString:[NSString stringWithFormat:NSLocalizedString(@"Loading %@...", @"Loading table task string"), theName]];
		}
	}

	[[tablesListView onMainThread] scrollRowToVisible:[tablesListView selectedRow]];

	return YES;
}

#pragma mark -
#pragma mark Datasource methods

/**
 * Returns the number of tables in the current database.
 */
- (NSInteger)numberOfRowsInTableView:(NSTableView *)aTableView
{
	return [filteredTables count];
}

/**
 * Returns the table names to be displayed in the tables list table view.
 */
- (id)tableView:(NSTableView *)aTableView objectValueForTableColumn:(NSTableColumn *)aTableColumn row:(NSInteger)rowIndex
{

	// During imports the table view sometimes appears to request items beyond the end of the array.
	// Using a hinted noteNumberOfRowsChanged after dropping tables fixes this but then seems to stick
	// even after override, so check here for the time being and display empty rows during import.
	if (rowIndex >= [filteredTables count]) return @"";

	return [filteredTables objectAtIndex:rowIndex];
}

/**
 * Prevent table renames while tasks are active
 */
- (BOOL)tableView:(NSTableView *)aTableView shouldEditTableColumn:(NSTableColumn *)aTableColumn row:(NSInteger)rowIndex
{
	return ![tableDocumentInstance isWorking];
}

/**
 * Renames a table (in tables-array and mysql-db).
 */
- (void)tableView:(NSTableView *)aTableView setObjectValue:(id)anObject forTableColumn:(NSTableColumn *)aTableColumn row:(NSInteger)rowIndex
{
	//first trim whitespace whitespace
	NSString *newTableName = [anObject stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];

	if ([selectedTableName isEqualToString:newTableName]) {
		// No changes in table name
		return;
	}

	if ([newTableName isEqualToString:@""]) {
		// empty table names are not allowed
		// don't annoy the user about it, just ignore this
		// this is also how the MacOS Finder handles renaming files
		return;
	}

	if (![self isTableNameValid:newTableName forType:selectedTableType ignoringSelectedTable:YES]) {
		// Table has invalid name
		// Since we trimmed whitespace and checked for empty string, this means there is already a table with that name
		SPBeginAlertSheet(NSLocalizedString(@"Error", @"error"), 
				NSLocalizedString(@"OK", @"OK button"), nil, nil, [tableDocumentInstance parentWindow], self,
				@selector(sheetDidEnd:returnCode:contextInfo:), nil,
				[NSString stringWithFormat: NSLocalizedString(@"The name '%@' is already used.", @"message when trying to rename a table/view/proc/etc to an already used name"), newTableName]);
		return;
	}

	@try {
		// first: update the database
		[self renameTableOfType:selectedTableType from:selectedTableName to:newTableName];

		// second: update the table list
		if (isTableListFiltered) {
			NSInteger unfilteredIndex = [tables indexOfObject:[filteredTables objectAtIndex:rowIndex]];
			[tables replaceObjectAtIndex:unfilteredIndex withObject:newTableName];
		}
		[filteredTables replaceObjectAtIndex:rowIndex withObject:newTableName];
		if (selectedTableName) [selectedTableName release];
		selectedTableName = [[NSString alloc] initWithString:newTableName];

		// if the 'table' is a view or a table, reload the currently selected view
		if (selectedTableType == SPTableTypeTable || selectedTableType == SPTableTypeView)
		{
			statusLoaded = NO;
			structureLoaded = NO;
			contentLoaded = NO;
			triggersLoaded = NO;
			switch ([tabView indexOfTabViewItem:[tabView selectedTabViewItem]]) {
				case SPTableViewStructure:
				[tableSourceInstance loadTable:newTableName];
				structureLoaded = YES;
				break;
				case SPTableViewContent:
				[tableContentInstance loadTable:newTableName];
				contentLoaded = YES;
				break;
				case SPTableViewStatus:
				[extendedTableInfoInstance loadTable:newTableName];
				statusLoaded = YES;
				break;
				case SPTableViewTriggers:
				[tableTriggersInstance loadTriggers];
				triggersLoaded = YES;
				break;
			}
		}
	}
	@catch (NSException * myException) {
		SPBeginAlertSheet( NSLocalizedString(@"Error", @"error"), NSLocalizedString(@"OK", @"OK button"), nil, nil, [tableDocumentInstance parentWindow], self, nil, nil, [myException reason]);
	}

	// Set window title to reflect the new table name
	[tableDocumentInstance updateWindowTitle:self];

	// Query the structure of all databases in the background (mainly for completion)
	[NSThread detachNewThreadSelector:@selector(queryDbStructureWithUserInfo:) toTarget:mySQLConnection withObject:[NSDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithBool:YES], @"forceUpdate", nil]];
}

#pragma mark -
#pragma mark TableView delegate methods

/**
 * Traps enter and esc and edit/cancel without entering next row
 */
- (BOOL)control:(NSControl *)control textView:(NSTextView *)textView doCommandBySelector:(SEL)command
{
	if ( [textView methodForSelector:command] == [textView methodForSelector:@selector(insertNewline:)] ) {
		//save current line
		[[control window] makeFirstResponder:control];
		return TRUE;

	} else if ( [[control window] methodForSelector:command] == [[control window] methodForSelector:@selector(_cancelKey:)] ||
		[textView methodForSelector:command] == [textView methodForSelector:@selector(complete:)] ) {

		//abort editing
		[control abortEditing];

		return TRUE;
	} else{
		return FALSE;
	}
}

/**
 * Table view delegate method
 */
- (BOOL)selectionShouldChangeInTableView:(NSTableView *)aTableView
{

	// Don't allow selection changes while performing a task.
	if (!tableListIsSelectable) return NO;

	// End editing (otherwise problems when user hits reload button)
	[[tableDocumentInstance parentWindow] endEditingFor:nil];

	if ( alertSheetOpened ) {
		return NO;
	}

	// We have to be sure that document views have finished editing
	return [tableDocumentInstance couldCommitCurrentViewActions];
}

/**
 * Loads a table in content or source view (if tab selected)
 */
- (void)tableViewSelectionDidChange:(NSNotification *)aNotification
{

	if([tablesListView selectedRow] < 0) {
		// Reset all
		if (selectedTableName) [selectedTableName release];
		selectedTableName = nil;
		selectedTableType = SPTableTypeNone;
		[tableSourceInstance loadTable:nil];
		[tableContentInstance loadTable:nil];
		[extendedTableInfoInstance loadTable:nil];
		[tableTriggersInstance loadTriggers];
		structureLoaded = NO;
		contentLoaded = NO;
		statusLoaded = NO;
		triggersLoaded = NO;
		[self updateSelectionWithTaskString:NSLocalizedString(@"Reloading...", @"Reloading table task string")];
		return;
	}

	id selectedItem = [filteredTables objectAtIndex:[tablesListView selectedRow]];

	if(![selectedItem isKindOfClass:[NSString class]]) {
		[self updateSelectionWithTaskString:NSLocalizedString(@"Reloading...", @"Reloading table task string")];
		return;
	}

	// Reset selectability after change if necessary
	if ([tableDocumentInstance isWorking]) tableListIsSelectable = NO;

	// Perform no action if the selected table hasn't actually changed - reselection etc
	if ([tablesListView numberOfSelectedRows] == 1
		&& [(NSString *)selectedItem length]
		&& [selectedTableName isEqualToString:(NSString *)selectedItem]
		&& selectedTableType == [[filteredTableTypes objectAtIndex:[tablesListView selectedRow]] integerValue])
	{
		return;
	}

	// Save existing scroll position and details
	[spHistoryControllerInstance updateHistoryEntries];

	NSString *tableName = @"data";
	if ([tablesListView numberOfSelectedRows] == 1 && [selectedItem isKindOfClass:[NSString class]] && [(NSString *)selectedItem length])
		tableName = [filteredTables objectAtIndex:[tablesListView selectedRow]];
	[self updateSelectionWithTaskString:[NSString stringWithFormat:NSLocalizedString(@"Loading %@...", @"Loading table task string"), tableName]];

	if([[SPNavigatorController sharedNavigatorController] syncMode] && [tablesListView numberOfSelectedRows] == 1) {
		NSMutableString *schemaPath = [NSMutableString string];
		[schemaPath setString:[tableDocumentInstance connectionID]];
		if([tableDocumentInstance database] && [[tableDocumentInstance database] length]) {
			[schemaPath appendString:SPUniqueSchemaDelimiter];
			[schemaPath appendString:[tableDocumentInstance database]];
			if(tableName && [tableName length]) {
				[schemaPath appendString:SPUniqueSchemaDelimiter];
				[schemaPath appendString:tableName];
			}
		}
		[[SPNavigatorController sharedNavigatorController] selectPath:schemaPath];
	}
}

/**
 * Table view delegate method
 */
- (BOOL)tableView:(NSTableView *)aTableView shouldSelectRow:(NSInteger)rowIndex
{
	// Disallow selection while the document is working on a task
	if ([tableDocumentInstance isWorking]) return NO;

	if(![[filteredTables objectAtIndex:rowIndex] isKindOfClass:[NSString class]])
		return NO;

	//return (rowIndex != 0);
	if( [filteredTableTypes count] == 0 )
		return (rowIndex != 0 );
	return ([[filteredTableTypes objectAtIndex:rowIndex] integerValue] != SPTableTypeNone );
}

/**
 * Table view delegate method
 */
- (BOOL)tableView:(NSTableView *)aTableView isGroupRow:(NSInteger)rowIndex
{
	// For empty tables - title still present - or while lists are being altered
	if (rowIndex >= [filteredTableTypes count]) return (rowIndex == 0 );

	return ([[filteredTableTypes objectAtIndex:rowIndex] integerValue] == SPTableTypeNone );
}

/**
 * Table view delegate method
 */
- (void)tableView:(NSTableView *)aTableView  willDisplayCell:(id)aCell forTableColumn:(NSTableColumn *)aTableColumn row:(NSInteger)rowIndex
{
	if (rowIndex > 0 && rowIndex < [filteredTableTypes count]
		&& [[aTableColumn identifier] isEqualToString:@"tables"]) {
		if(![[filteredTables objectAtIndex:rowIndex] isKindOfClass:[NSString class]]) {
			[(ImageAndTextCell*)aCell setImage:nil];
			[(ImageAndTextCell*)aCell setIndentationLevel:0];
		}
		else if ([[filteredTableTypes objectAtIndex:rowIndex] integerValue] == SPTableTypeView) {
			[(ImageAndTextCell*)aCell setImage:[NSImage imageNamed:@"table-view-small"]];
		} else if ([[filteredTableTypes objectAtIndex:rowIndex] integerValue] == SPTableTypeTable) {
			[(ImageAndTextCell*)aCell setImage:[NSImage imageNamed:@"table-small"]];
		} else if ([[filteredTableTypes objectAtIndex:rowIndex] integerValue] == SPTableTypeProc) {
			[(ImageAndTextCell*)aCell setImage:[NSImage imageNamed:@"proc-small"]];
		} else if ([[filteredTableTypes objectAtIndex:rowIndex] integerValue] == SPTableTypeFunc) {
			[(ImageAndTextCell*)aCell setImage:[NSImage imageNamed:@"func-small"]];
		}

		if ([[filteredTableTypes objectAtIndex:rowIndex] integerValue] == SPTableTypeNone) {
			[(ImageAndTextCell*)aCell setImage:nil];
			[(ImageAndTextCell*)aCell setIndentationLevel:0];
		} else {
			[(ImageAndTextCell*)aCell setIndentationLevel:1];
			[(ImageAndTextCell*)aCell setFont:[NSFont systemFontOfSize:[NSFont smallSystemFontSize]]];
		}
	} else {
		[(ImageAndTextCell*)aCell setImage:nil];
		[(ImageAndTextCell*)aCell setIndentationLevel:0];
	}
}

/**
 * Table view delegate method
 */
- (CGFloat)tableView:(NSTableView *)tableView heightOfRow:(NSInteger)row
{
	return (row == 0) ? 25 : 17;
}

- (BOOL)tableView:(NSTableView *)aTableView acceptDrop:(id <NSDraggingInfo>)info row:(NSInteger)row dropOperation:(NSTableViewDropOperation)operation
{
	NSPasteboard *pboard = [info draggingPasteboard];

	// tables were dropped coming from the Navigator
	if ( [[pboard types] containsObject:@"SPDragTableDataFromNavigatorPboardType"] ) {
		NSString *query = [pboard stringForType:@"SPDragTableDataFromNavigatorPboardType"];
		if(!query) return NO;

		[mySQLConnection queryString:query];
		if ([mySQLConnection queryErrored]) {
			NSAlert *alert = [NSAlert alertWithMessageText:NSLocalizedString(@"Error while importing table", @"error while importing table message")
											 defaultButton:NSLocalizedString(@"OK", @"OK button")
										   alternateButton:nil
											   otherButton:nil
								 informativeTextWithFormat:[NSString stringWithFormat:NSLocalizedString(@"An error occurred while trying to import a table via: \n%@\n\n\nMySQL said: %@", @"error importing table informative message"),
									query, [mySQLConnection getLastErrorMessage]]];

			[alert setAlertStyle:NSCriticalAlertStyle];
			[alert beginSheetModalForWindow:[tableDocumentInstance parentWindow] modalDelegate:self didEndSelector:@selector(sheetDidEnd:returnCode:contextInfo:) contextInfo:@"truncateTableError"];
			return NO;
		}
		[self updateTables:nil];
		return YES;
	}

	return NO;
}

- (NSDragOperation)tableView:(NSTableView *)aTableView validateDrop:(id < NSDraggingInfo >)info proposedRow:(NSInteger)row proposedDropOperation:(NSTableViewDropOperation)operation
{
	[tablesListView setDropRow:row dropOperation:NSTableViewDropAbove];
	return NSDragOperationCopy;
}

#pragma mark -
#pragma mark TabView delegate methods

/**
 * Loads structure or source if tab selected the first time,
 * using a threaded load if currently on the main thread.
 */
- (void)tabView:(NSTabView *)aTabView didSelectTabViewItem:(NSTabViewItem *)tabViewItem
{
	[tableDocumentInstance startTaskWithDescription:[NSString stringWithFormat:NSLocalizedString(@"Loading %@...", @"Loading table task string"), selectedTableName]];
	if ([NSThread isMainThread]) {
		[NSThread detachNewThreadSelector:@selector(loadTabTask:) toTarget:self withObject:tabViewItem];
	} else {
		[self loadTabTask:tabViewItem];
	}
}
- (void)loadTabTask:(NSTabViewItem *)tabViewItem
{
	NSAutoreleasePool *tabLoadPool = [[NSAutoreleasePool alloc] init];

	if ([tablesListView numberOfSelectedRows] == 1
		&& ([self tableType] == SPTableTypeTable || [self tableType] == SPTableTypeView) )
	{

		if ( ([tabView indexOfTabViewItem:[tabView selectedTabViewItem]] == SPTableViewStructure) && !structureLoaded ) {
			[tableSourceInstance loadTable:selectedTableName];
			structureLoaded = YES;
		}

		if ( ([tabView indexOfTabViewItem:[tabView selectedTabViewItem]] == SPTableViewContent) && !contentLoaded ) {
			[tableContentInstance loadTable:selectedTableName];
			contentLoaded = YES;
		}

		if ( ([tabView indexOfTabViewItem:[tabView selectedTabViewItem]] == SPTableViewStatus) && !statusLoaded ) {
			[[extendedTableInfoInstance onMainThread] loadTable:selectedTableName];
			statusLoaded = YES;
		}

		if ( ([tabView indexOfTabViewItem:[tabView selectedTabViewItem]] == SPTableViewTriggers) && !triggersLoaded ) {
			[[tableTriggersInstance onMainThread] loadTriggers];
			triggersLoaded = YES;
		}
	}
	else {
		[tableSourceInstance loadTable:nil];
		[tableContentInstance loadTable:nil];
	}

	[tableDocumentInstance endTask];
	[tabLoadPool drain];
}

/**
 * Menu item interface validation
 */
- (BOOL)validateMenuItem:(NSMenuItem *)menuItem
{
	// popup button below table list
	if ([menuItem action] == @selector(copyTable:)) {
		return (([tablesListView numberOfSelectedRows] == 1) && [[self tableName] length] && [tablesListView numberOfSelectedRows] > 0);
	}

	if ([menuItem action] == @selector(removeTable:) || [menuItem action] == @selector(truncateTable:)) {
		return ([tablesListView numberOfSelectedRows] > 0);
	}

	if ([menuItem action] == @selector(renameTable:)) {
		return (([tablesListView numberOfSelectedRows] == 1) && [[self tableName] length]);
	}

	return [super validateMenuItem:menuItem];
}

#pragma mark -
#pragma mark Table list filter interaction

/**
 * Show the filter box if it's currently hidden.  Use a delay to ensure
 * action is executed on first load.
 */
- (void) showFilter
{
	if ([tableListFilterSplitView collapsibleSubviewIsCollapsed])
		[tableListFilterSplitView performSelectorOnMainThread:@selector(toggleCollapse:) withObject:nil waitUntilDone:NO];
}

/**
 * Hide the filter box if it's currently shown.  Use a delay to ensure
 * action is executed on first load.
 */
- (void) hideFilter
{
	if (![tableListFilterSplitView collapsibleSubviewIsCollapsed])
		[tableListFilterSplitView performSelectorOnMainThread:@selector(toggleCollapse:) withObject:nil waitUntilDone:NO];
}

/**
 * Clear the current content of the filter box
 */
- (void) clearFilter
{
	[listFilterField setStringValue:@""];
}

/**
 * Set focus to table list filter search field
 */
- (void) makeTableListFilterHaveFocus
{
	if([tables count] > 20) {
		[[tableDocumentInstance parentWindow] makeFirstResponder:listFilterField];
	}
	else if([tables count] > 2) {
		[[tableDocumentInstance parentWindow] makeFirstResponder:tablesListView];
		if([tablesListView numberOfSelectedRows] < 1)
			[tablesListView selectRowIndexes:[NSIndexSet indexSetWithIndex:1] byExtendingSelection:NO];

	}
}

/**
 * Update the filter search.
 */
- (IBAction) updateFilter:(id)sender
{

	// Don't try and maintain selections of multiple rows through filtering
	if ([tablesListView numberOfSelectedRows] > 1) {
		[tablesListView deselectAll:self];
		if (selectedTableName) [selectedTableName release], selectedTableName = nil;
	}

	if ([[listFilterField stringValue] length]) {
		if (isTableListFiltered) {
			[filteredTables release];
			[filteredTableTypes release];
		}
		filteredTables = [[NSMutableArray alloc] init];
		filteredTableTypes = [[NSMutableArray alloc] init];

		NSInteger i, lastTableType = NSNotFound, tableType;
		NSRange substringRange;
		for (i = 0; i < [tables count]; i++) {
			tableType = [[tableTypes objectAtIndex:i] integerValue];
			if (tableType == SPTableTypeNone) continue;
			substringRange = [[tables objectAtIndex:i] rangeOfString:[listFilterField stringValue] options:NSCaseInsensitiveSearch];
			if (substringRange.location == NSNotFound) continue;

			// Add a title if necessary
			if ((tableType == SPTableTypeTable || tableType == SPTableTypeView) && lastTableType == NSNotFound)
			{
				if (tableListContainsViews) {
					[filteredTables addObject:NSLocalizedString(@"TABLES & VIEWS",@"header for table & views list")];
				} else {
					[filteredTables addObject:NSLocalizedString(@"TABLES",@"header for table list")];
				}
				[filteredTableTypes addObject:[NSNumber numberWithInteger:SPTableTypeNone]];
			} else if ((tableType == SPTableTypeProc || tableType == SPTableTypeFunc)
						&& (lastTableType == NSNotFound || lastTableType == SPTableTypeTable || lastTableType == SPTableTypeView))
			{
				[filteredTables addObject:NSLocalizedString(@"PROCS & FUNCS",@"header for procs & funcs list")];
				[filteredTableTypes addObject:[NSNumber numberWithInteger:SPTableTypeNone]];
			}
			lastTableType = tableType;

			// Add the item
			[filteredTables addObject:[tables objectAtIndex:i]];
			[filteredTableTypes addObject:[tableTypes objectAtIndex:i]];
		}

		// Add a "no matches" title if nothing matches the current filter settings
		if (![filteredTables count]) {
			[filteredTables addObject:NSLocalizedString(@"NO MATCHES",@"header for no matches in filtered list")];
			[filteredTableTypes addObject:[NSNumber numberWithInteger:SPTableTypeNone]];
		}

		// If the currently selected table isn't present in the filter list, add it as a special entry
		if (selectedTableName && [filteredTables indexOfObject:selectedTableName] == NSNotFound) {
			[filteredTables addObject:NSLocalizedString(@"CURRENT SELECTION",@"header for current selection in filtered list")];
			[filteredTableTypes addObject:[NSNumber numberWithInteger:SPTableTypeNone]];
			[filteredTables addObject:selectedTableName];
			[filteredTableTypes addObject:[NSNumber numberWithInteger:selectedTableType]];
		}

		isTableListFiltered = YES;
	} else if (isTableListFiltered) {
		isTableListFiltered = NO;
		[filteredTables release];
		filteredTables = tables;
		[filteredTableTypes release];
		filteredTableTypes = tableTypes;
	}

	// Reselect correct row and reload the table view display
	if ([tablesListView numberOfRows] < [filteredTables count]) [tablesListView noteNumberOfRowsChanged];
	if (selectedTableName) [tablesListView selectRowIndexes:[NSIndexSet indexSetWithIndex:[filteredTables indexOfObject:selectedTableName]] byExtendingSelection:NO];
	[tablesListView reloadData];
}

/**
 * Select the supplied row index; added for convenience to allow
 * use with performSelector:withObject:afterDelay: for re-selection.
 */
- (void) selectTableAtIndex:(NSNumber *)row
{
	NSInteger rowIndex = [row integerValue];
	if (rowIndex == NSNotFound || rowIndex > [filteredTables count] || [[filteredTableTypes objectAtIndex:rowIndex] integerValue] == SPTableTypeNone)
		return;

	[tablesListView selectRowIndexes:[NSIndexSet indexSetWithIndex:rowIndex] byExtendingSelection:NO];
}

#pragma mark -
#pragma mark Task interaction

/**
 * Disable all table list interactive elements during an ongoing task.
 */
- (void) startDocumentTaskForTab:(NSNotification *)aNotification
{
	tableListIsSelectable = NO;
	[toolbarAddButton setEnabled:NO];
	[toolbarActionsButton setEnabled:NO];
	[toolbarReloadButton setEnabled:NO];
}

/**
 * Enable all table list interactive elements after an ongoing task.
 */
- (void) endDocumentTaskForTab:(NSNotification *)aNotification
{
	tableListIsSelectable = YES;
	[toolbarAddButton setEnabled:YES];
	[toolbarActionsButton setEnabled:YES];
	[toolbarReloadButton setEnabled:YES];
}

/**
 * Set the table list to selectable or not during the task process.
 */
- (void) setTableListSelectability:(BOOL)isSelectable
{
	tableListIsSelectable = isSelectable;
}

#pragma mark -
#pragma mark SplitView Delegate Methods

- (NSRect)splitView:(NSSplitView *)splitView effectiveRect:(NSRect)proposedEffectiveRect forDrawnRect:(NSRect)drawnRect ofDividerAtIndex:(NSInteger)dividerIndex
{
	return (splitView == tableListSplitView ? NSZeroRect : proposedEffectiveRect);
}


#pragma mark -
#pragma mark Other

/**
 * Standard init method. Performs various ivar initialisations.
 */
- (id)init
{
	if ((self = [super init])) {
		tables = [[NSMutableArray alloc] init];
		filteredTables = tables;
		tableTypes = [[NSMutableArray alloc] init];
		filteredTableTypes = tableTypes;
		structureLoaded = NO;
		contentLoaded = NO;
		statusLoaded = NO;
		triggersLoaded = NO;
		isTableListFiltered = NO;
		tableListIsSelectable = YES;
		tableListContainsViews = NO;
		selectedTableType = SPTableTypeNone;
		selectedTableName = nil;
		[tables addObject:NSLocalizedString(@"TABLES",@"header for table list")];
	}

	return self;
}

/**
 * Standard awakeFromNib method for interface loading.
 */
- (void)awakeFromNib
{

	// Collapse the table information pane if preference to do so is set
	if ([[[NSUserDefaults standardUserDefaults] objectForKey:SPTableInformationPanelCollapsed] boolValue]
		&& [tableListSplitView collapsibleSubview]) {
		[tableInfoCollapseButton setNextState];
		[tableInfoCollapseButton setToolTip:NSLocalizedString(@"Show Table Information",@"Show Table Information")];
		[tableListSplitView setValue:[NSNumber numberWithFloat:[tableListSplitView collapsibleSubview].frame.size.height] forKey:@"uncollapsedSize"];
		[[tableListSplitView collapsibleSubview] setAutoresizesSubviews:NO];
		[[tableListSplitView collapsibleSubview] setFrameSize:NSMakeSize([tableListSplitView collapsibleSubview].frame.size.width, 0)];
		[tableListSplitView setCollapsibleSubviewCollapsed:YES];
		[[tableListSplitView collapsibleSubview] setAutoresizesSubviews:YES];
	} else {
		[tableInfoCollapseButton setToolTip:NSLocalizedString(@"Hide Table Information",@"Hide Table Information")];
	}

	// Start the table filter list collapsed
	if ([tableListFilterSplitView collapsibleSubview]) {
		[tableListFilterSplitView setValue:[NSNumber numberWithFloat:[tableListFilterSplitView collapsibleSubview].frame.size.height] forKey:@"uncollapsedSize"];
		// Set search bar view to the height of 1 instead of 0 to ensure that the view will be visible
		// after opening a next connection window which has more than 20 tables
		[[tableListFilterSplitView collapsibleSubview] setFrameSize:NSMakeSize([tableListFilterSplitView collapsibleSubview].frame.size.width, 1)];
		[tableListFilterSplitView setCollapsibleSubviewCollapsed:YES];
	}

	// Add observers for document task activity
	[[NSNotificationCenter defaultCenter] addObserver:self
											 selector:@selector(startDocumentTaskForTab:)
												 name:SPDocumentTaskStartNotification
											   object:tableDocumentInstance];
	[[NSNotificationCenter defaultCenter] addObserver:self
											 selector:@selector(endDocumentTaskForTab:)
												 name:SPDocumentTaskEndNotification
											   object:tableDocumentInstance];


	[tablesListView registerForDraggedTypes:[NSArray arrayWithObjects:@"SPDragTableDataFromNavigatorPboardType", nil]];

}

/**
 * Standard dealloc method.
 */
- (void)dealloc
{
	[[NSNotificationCenter defaultCenter] removeObserver:self];

	[tables release];
	[tableTypes release];
	if (isTableListFiltered && filteredTables) [filteredTables release];
	if (isTableListFiltered && filteredTableTypes) [filteredTableTypes release];
	if (selectedTableName) [selectedTableName release];

	[super dealloc];
}

@end

@implementation SPTablesList (PrivateAPI)

/**
 * Removes the selected object (table, view, procedure, function, etc.) from the database and tableView.
 */
- (void)removeTable
{
	NSIndexSet *indexes = [tablesListView selectedRowIndexes];
	[tablesListView selectRowIndexes:[NSIndexSet indexSet] byExtendingSelection:NO];

	// get last index
	NSUInteger currentIndex = [indexes lastIndex];

	while (currentIndex != NSNotFound)
	{
		if([[filteredTableTypes objectAtIndex:currentIndex] integerValue] == SPTableTypeView) {
			[mySQLConnection queryString: [NSString stringWithFormat: @"DROP VIEW %@",
										   [[filteredTables objectAtIndex:currentIndex] backtickQuotedString]
										   ]];
		} else if([[filteredTableTypes objectAtIndex:currentIndex] integerValue] == SPTableTypeTable) {
			[mySQLConnection queryString: [NSString stringWithFormat: @"DROP TABLE %@",
										   [[filteredTables objectAtIndex:currentIndex] backtickQuotedString]
										   ]];
		} else if([[filteredTableTypes objectAtIndex:currentIndex] integerValue] == SPTableTypeProc) {
			[mySQLConnection queryString: [NSString stringWithFormat: @"DROP PROCEDURE %@",
										   [[filteredTables objectAtIndex:currentIndex] backtickQuotedString]
										   ]];
		} else if([[filteredTableTypes objectAtIndex:currentIndex] integerValue] == SPTableTypeFunc) {
			[mySQLConnection queryString: [NSString stringWithFormat: @"DROP FUNCTION %@",
										   [[filteredTables objectAtIndex:currentIndex] backtickQuotedString]
										   ]];
		}

		// If no error is recorded, the table was successfully dropped - remove it from the list
		if (![mySQLConnection queryErrored]) {
			//dropped table with success
			if (isTableListFiltered) {
				NSInteger unfilteredIndex = [tables indexOfObject:[filteredTables objectAtIndex:currentIndex]];
				[tables removeObjectAtIndex:unfilteredIndex];
				[tableTypes removeObjectAtIndex:unfilteredIndex];
			}
			[filteredTables removeObjectAtIndex:currentIndex];
			[filteredTableTypes removeObjectAtIndex:currentIndex];

			// Get next index (beginning from the end)
			currentIndex = [indexes indexLessThanIndex:currentIndex];

		// Otherwise, display an alert - and if there's tables left, ask whether to proceed
		} else {

			NSAlert *alert = [[[NSAlert alloc] init] autorelease];
			if ([indexes indexLessThanIndex:currentIndex] == NSNotFound) {
				[alert addButtonWithTitle:NSLocalizedString(@"OK", @"OK button")];
			} else {
				[alert addButtonWithTitle:NSLocalizedString(@"Continue", @"continue button")];
				[alert addButtonWithTitle:NSLocalizedString(@"Stop", @"stop button")];
			}
			[alert setMessageText:NSLocalizedString(@"Error", @"error")];
			[alert setInformativeText:[NSString stringWithFormat:NSLocalizedString(@"Couldn't delete '%@'.\nMySQL said: %@", @"message of panel when an item cannot be deleted"), [tables objectAtIndex:currentIndex], [mySQLConnection getLastErrorMessage]]];
			[alert setAlertStyle:NSWarningAlertStyle];
			if ([indexes indexLessThanIndex:currentIndex] == NSNotFound) {
				[alert beginSheetModalForWindow:[tableDocumentInstance parentWindow] modalDelegate:self didEndSelector:nil contextInfo:nil];
				currentIndex = NSNotFound;
			} else {
				NSInteger choice = [alert runModal];
				if (choice == NSAlertFirstButtonReturn) {
					currentIndex = [indexes indexLessThanIndex:currentIndex];
				} else {
					currentIndex = NSNotFound;
				}
			}
		}
	}

	// Remove the isolated "current selection" item for filtered lists if appropriate
	if (isTableListFiltered && [filteredTables count] > 1
		&& [[filteredTableTypes objectAtIndex:[filteredTableTypes count]-1] integerValue] == SPTableTypeNone
		&& [[filteredTables objectAtIndex:[filteredTables count]-1] isEqualToString:NSLocalizedString(@"CURRENT SELECTION",@"header for current selection in filtered list")])
	{
		[filteredTables removeLastObject];
		[filteredTableTypes removeLastObject];
	}

	[tablesListView reloadData];

	[tablesListView deselectAll:self];

	// set window title
	[tableDocumentInstance updateWindowTitle:self];


	// Query the structure of all databases in the background (mainly for completion)
	[NSThread detachNewThreadSelector:@selector(queryDbStructureWithUserInfo:) toTarget:mySQLConnection withObject:[NSDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithBool:YES], @"forceUpdate", nil]];

}

/**
 * Trucates the selected table(s).
 */
- (void)truncateTable
{
	NSIndexSet *indexes = [tablesListView selectedRowIndexes];

	// Get last index
	NSUInteger currentIndex = [indexes lastIndex];

	while (currentIndex != NSNotFound)
	{
		[mySQLConnection queryString:[NSString stringWithFormat: @"TRUNCATE TABLE %@", [[filteredTables objectAtIndex:currentIndex] backtickQuotedString]]];

		// Couldn't truncate table
		if ([mySQLConnection queryErrored]) {
			NSAlert *alert = [NSAlert alertWithMessageText:NSLocalizedString(@"Error truncating table", @"error truncating table message")
											 defaultButton:NSLocalizedString(@"OK", @"OK button")
										   alternateButton:nil
											   otherButton:nil
								 informativeTextWithFormat:[NSString stringWithFormat:NSLocalizedString(@"An error occurred while trying to truncate the table '%@'.\n\nMySQL said: %@", @"error truncating table informative message"),
									[filteredTables objectAtIndex:currentIndex], [mySQLConnection getLastErrorMessage]]];

			[alert setAlertStyle:NSCriticalAlertStyle];
			// NSArray *buttons = [alert buttons];
			// // Change the alert's cancel button to have the key equivalent of return
			// [[buttons objectAtIndex:0] setKeyEquivalent:@"t"];
			// [[buttons objectAtIndex:0] setKeyEquivalentModifierMask:NSCommandKeyMask];
			// [[buttons objectAtIndex:1] setKeyEquivalent:@"\r"];
			[alert beginSheetModalForWindow:[tableDocumentInstance parentWindow] modalDelegate:self didEndSelector:@selector(sheetDidEnd:returnCode:contextInfo:) contextInfo:@"truncateTableError"];
		}

		// Get next index (beginning from the end)
		currentIndex = [indexes indexLessThanIndex:currentIndex];
	}

	// Ensure the the table's content view is updated to show that it has been truncated
	if ([tabView indexOfTabViewItem:[tabView selectedTabViewItem]] == SPTableViewContent) {
		[tableContentInstance reloadTable:self];
	} else {
		[self setContentRequiresReload:YES];
	}

	[tableDataInstance resetStatusData];
}

/**
 * Adds a new table table to the database using the selected character set encoding and storage engine.
 */
- (void)addTable
{
	NSString *charSetStatement = @"";
	NSString *engineStatement  = @"";

	NSString *tableType = [tableTypeButton title];
	NSString *tableName = [tableNameField stringValue];

	// Ensure the use of UTF8 when creating new tables
	BOOL changeEncoding = ![[mySQLConnection encoding] isEqualToString:@"utf8"];
	if (changeEncoding) {
		[mySQLConnection storeEncodingForRestoration];
		[mySQLConnection setEncoding:@"utf8"];
	}

	// If there is an encoding selected other than the default we must specify it in CREATE TABLE statement
	if ([tableEncodingButton indexOfSelectedItem] > 0) {
		NSString *encodingName = [[tableEncodingButton title] stringByMatching:@"\\((.*)\\)" capture:1L];
		if (!encodingName) encodingName = @"utf8";
		charSetStatement = [NSString stringWithFormat:@"DEFAULT CHARACTER SET %@", [encodingName backtickQuotedString]];
	}

	// If there is a type selected other than the default we must specify it in CREATE TABLE statement
	if ([tableTypeButton indexOfSelectedItem] > 0) {
		engineStatement = [NSString stringWithFormat:@"ENGINE = %@", [tableType backtickQuotedString]];
	}

	NSString *createStatement = [NSString stringWithFormat:@"CREATE TABLE %@ (%@) %@ %@", [tableName backtickQuotedString], ([tableType isEqualToString:@"CSV"]) ? @"id INT NOT NULL" : @"id INT", charSetStatement, engineStatement];

	// Create the table
	[mySQLConnection queryString:createStatement];

	if (![mySQLConnection queryErrored]) {

		// Table creation was successful - insert the new item into the tables list and select it.
		NSInteger addItemAtIndex = NSNotFound;

		for (NSInteger i = 0; i < [tables count]; i++)
		{
			NSInteger tableType = [[tableTypes objectAtIndex:i] integerValue];

			if (tableType == SPTableTypeNone) continue;
			if (tableType == SPTableTypeProc || tableType == SPTableTypeFunc) {
				addItemAtIndex = (i - 1);
				break;
			}

			if ([tableName localizedCompare:[tables objectAtIndex:i]] == NSOrderedAscending) {
				addItemAtIndex = i;
				break;
			}
		}

		if (addItemAtIndex == NSNotFound) {
			[tables addObject:tableName];
			[tableTypes addObject:[NSNumber numberWithInteger:SPTableTypeTable]];
		}
		else {
			[tables insertObject:tableName atIndex:addItemAtIndex];
			[tableTypes insertObject:[NSNumber numberWithInteger:SPTableTypeTable] atIndex:addItemAtIndex];
		}

		// Set the selected table name and type, and then use updateFilter and updateSelection to update the filter list and selection.
		if (selectedTableName) [selectedTableName release];

		selectedTableName = [[NSString alloc] initWithString:tableName];
		selectedTableType = SPTableTypeTable;

		[self updateFilter:self];

		[tablesListView scrollRowToVisible:[tablesListView selectedRow]];

		[self updateSelectionWithTaskString:[NSString stringWithFormat:NSLocalizedString(@"Loading %@...", @"Loading table task string"), selectedTableName]];

		// Query the structure of all databases in the background (mainly for completion)
		[NSThread detachNewThreadSelector:@selector(queryDbStructureWithUserInfo:) toTarget:mySQLConnection withObject:[NSDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithBool:YES], @"forceUpdate", nil]];

	}
	else {
		// Error while creating new table
		alertSheetOpened = YES;

		SPBeginAlertSheet(NSLocalizedString(@"Error adding new table", @"error adding new table message"),
						  NSLocalizedString(@"OK", @"OK button"), nil, nil, [tableDocumentInstance parentWindow], self,
						  @selector(sheetDidEnd:returnCode:contextInfo:), @"addRow",
						  [NSString stringWithFormat:NSLocalizedString(@"An error occurred while trying to add the new table '%@'.\n\nMySQL said: %@", @"error adding new table informative message"), tableName, [mySQLConnection getLastErrorMessage]]);

		if (changeEncoding) [mySQLConnection restoreStoredEncoding];
		[tablesListView reloadData];
	}

	// Clear table name
	[tableNameField setStringValue:@""];
}

/**
 * Copies the currently selected object (table, view, procedure, function, etc.).
 */
- (void)copyTable
{
	NSString *tableType = @"";

	if ([[copyTableNameField stringValue] isEqualToString:@""]) {
		SPBeginAlertSheet(NSLocalizedString(@"Error", @"error"), NSLocalizedString(@"OK", @"OK button"), nil, nil, [tableDocumentInstance parentWindow], self, nil, nil, NSLocalizedString(@"Table must have a name.", @"message of panel when no name is given for table"));
		return;
	}

	BOOL copyTableContent = ([copyTableContentSwitch state] == NSOnState);

	NSInteger tblType = [[filteredTableTypes objectAtIndex:[tablesListView selectedRow]] integerValue];

	// Set up the table type and whether content can be duplicated.  The table type is used
	// in queries and should not be localized.
	switch (tblType){
		case SPTableTypeTable:
			tableType = @"table";
			[copyTableContentSwitch setEnabled:YES];
			break;
		case SPTableTypeView:
			tableType = @"view";
			[copyTableContentSwitch setEnabled:NO];
			break;
		case SPTableTypeProc:
			tableType = @"procedure";
			[copyTableContentSwitch setEnabled:NO];
			break;
		case SPTableTypeFunc:
			tableType = @"function";
			[copyTableContentSwitch setEnabled:NO];
			break;
	}

	// Get table/view structure
	MCPResult *queryResult = [mySQLConnection queryString:[NSString stringWithFormat:@"SHOW CREATE %@ %@",
												[tableType uppercaseString],
												[[filteredTables objectAtIndex:[tablesListView selectedRow]] backtickQuotedString]
												]];
	[queryResult setReturnDataAsStrings:YES];

	if ( ![queryResult numOfRows] ) {
		//error while getting table structure
		SPBeginAlertSheet(NSLocalizedString(@"Error", @"error"), NSLocalizedString(@"OK", @"OK button"), nil, nil, [tableDocumentInstance parentWindow], self, nil, nil,
						  [NSString stringWithFormat:NSLocalizedString(@"Couldn't get create syntax.\nMySQL said: %@", @"message of panel when table information cannot be retrieved"), [mySQLConnection getLastErrorMessage]]);

    } else {
		//insert new table name in create syntax and create new table
		NSScanner *scanner;
		NSString *scanString;

		if(tblType == SPTableTypeView){
			scanner = [[NSScanner alloc] initWithString:[[queryResult fetchRowAsDictionary] objectForKey:@"Create View"]];
			[scanner scanUpToString:@"AS" intoString:nil];
			[scanner scanUpToString:@"" intoString:&scanString];
			[scanner release];
			[mySQLConnection queryString:[NSString stringWithFormat:@"CREATE VIEW %@ %@", [[copyTableNameField stringValue] backtickQuotedString], scanString]];
		}
		else if(tblType == SPTableTypeTable){
			scanner = [[NSScanner alloc] initWithString:[[queryResult fetchRowAsDictionary] objectForKey:@"Create Table"]];
			[scanner scanUpToString:@"(" intoString:nil];
			[scanner scanUpToString:@"" intoString:&scanString];
			[scanner release];

			// If there are any InnoDB referencial constraints we need to strip out the names as they must be unique.
			// MySQL will generate the new names based on the new table name.
			scanString = [scanString stringByReplacingOccurrencesOfRegex:[NSString stringWithFormat:@"CONSTRAINT `[^`]+` "] withString:@""];

			// If we're not copying the tables content as well then we need to strip out any AUTO_INCREMENT presets.
			if (!copyTableContent) {
				scanString = [scanString stringByReplacingOccurrencesOfRegex:[NSString stringWithFormat:@"AUTO_INCREMENT=[0-9]+ "] withString:@""];
			}

			[mySQLConnection queryString:[NSString stringWithFormat:@"CREATE TABLE %@ %@", [[copyTableNameField stringValue] backtickQuotedString], scanString]];
		}
		else if(tblType == SPTableTypeFunc || tblType == SPTableTypeProc)
		{
			// get the create syntax
			MCPResult *theResult;
			if(selectedTableType == SPTableTypeProc)
				theResult = [mySQLConnection queryString:[NSString stringWithFormat:@"SHOW CREATE PROCEDURE %@", [selectedTableName backtickQuotedString]]];
			else if([self tableType] == SPTableTypeFunc)
				theResult = [mySQLConnection queryString:[NSString stringWithFormat:@"SHOW CREATE FUNCTION %@", [selectedTableName backtickQuotedString]]];
			else
				return;

			// Check for errors, only displaying if the connection hasn't been terminated
			if ([mySQLConnection queryErrored]) {
				if ([mySQLConnection isConnected]) {
					SPBeginAlertSheet(NSLocalizedString(@"Error", @"error"), NSLocalizedString(@"OK", @"OK button"), nil, nil, [tableDocumentInstance parentWindow], self, nil, nil,
									  [NSString stringWithFormat:NSLocalizedString(@"An error occured while retrieving the create syntax for '%@'.\nMySQL said: %@", @"message of panel when create syntax cannot be retrieved"), selectedTableName, [mySQLConnection getLastErrorMessage]]);
				}
				return;
			}

			[theResult setReturnDataAsStrings:YES];
			NSString *tableSyntax = [[theResult fetchRowAsArray] objectAtIndex:2];

			// replace the old name by the new one and drop the old one
			[mySQLConnection queryString:[tableSyntax stringByReplacingOccurrencesOfRegex:[NSString stringWithFormat:@"(?<=%@ )(`[^`]+?`)", [tableType uppercaseString]] withString:[[copyTableNameField stringValue] backtickQuotedString]]];

			if ([mySQLConnection queryErrored]) {
				SPBeginAlertSheet(NSLocalizedString(@"Error", @"error"), NSLocalizedString(@"OK", @"OK button"), nil, nil, [tableDocumentInstance parentWindow], self, nil, nil,
								  [NSString stringWithFormat:NSLocalizedString(@"Couldn't duplicate '%@'.\nMySQL said: %@", @"message of panel when an item cannot be renamed"), [copyTableNameField stringValue], [mySQLConnection getLastErrorMessage]]);
			}

		}

        if ([mySQLConnection queryErrored]) {
			//error while creating new table
			SPBeginAlertSheet(NSLocalizedString(@"Error", @"error"), NSLocalizedString(@"OK", @"OK button"), nil, nil, [tableDocumentInstance parentWindow], self, nil, nil,
							  [NSString stringWithFormat:NSLocalizedString(@"Couldn't create '%@'.\nMySQL said: %@", @"message of panel when table cannot be created"), [copyTableNameField stringValue], [mySQLConnection getLastErrorMessage]]);
        } else {

            if (copyTableContent) {
				//copy table content
                [mySQLConnection queryString:[NSString stringWithFormat:
											  @"INSERT INTO %@ SELECT * FROM %@",
											  [[copyTableNameField stringValue] backtickQuotedString],
											  [selectedTableName backtickQuotedString]
											  ]];

                if ([mySQLConnection queryErrored]) {
                    SPBeginAlertSheet(
									  NSLocalizedString(@"Warning", @"warning"),
									  NSLocalizedString(@"OK", @"OK button"),
									  nil,
									  nil,
									  [tableDocumentInstance parentWindow],
									  self,
									  nil,
									  nil,
									  NSLocalizedString(@"There have been errors while copying table content. Please control the new table.", @"message of panel when table content cannot be copied")
									  );
                }
            }

			// Insert the new item into the tables list and select it.
			NSInteger addItemAtIndex = NSNotFound;
			for (NSInteger i = 0; i < [tables count]; i++) {
				NSInteger theTableType = [[tableTypes objectAtIndex:i] integerValue];
				if (theTableType == SPTableTypeNone) continue;
				if ((theTableType == SPTableTypeView || theTableType == SPTableTypeTable)
					&& (tblType == SPTableTypeProc || tblType == SPTableTypeFunc)) {
					continue;
				}
				if ((theTableType == SPTableTypeProc || theTableType == SPTableTypeFunc)
					&& (tblType == SPTableTypeView || tblType == SPTableTypeTable)) {
					addItemAtIndex = i - 1;
					break;
				}
				if ([[copyTableNameField stringValue] localizedCompare:[tables objectAtIndex:i]] == NSOrderedAscending) {
					addItemAtIndex = i;
					break;
				}
			}
			if (addItemAtIndex == NSNotFound) {
				[tables addObject:[copyTableNameField stringValue]];
				[tableTypes addObject:[NSNumber numberWithInteger:tblType]];
			} else {
				[tables insertObject:[copyTableNameField stringValue] atIndex:addItemAtIndex];
				[tableTypes insertObject:[NSNumber numberWithInteger:tblType] atIndex:addItemAtIndex];
			}

			// Set the selected table name and type, and use updateFilter to update the filter list and selection
			if (selectedTableName) [selectedTableName release];
			selectedTableName = [[NSString alloc] initWithString:[copyTableNameField stringValue]];
			selectedTableType = tblType;
			[self updateFilter:self];
			[tablesListView scrollRowToVisible:[tablesListView selectedRow]];
			[self updateSelectionWithTaskString:[NSString stringWithFormat:NSLocalizedString(@"Loading %@...", @"Loading table task string"), selectedTableName]];

			// Query the structure of all databases in the background (mainly for completion)
			[NSThread detachNewThreadSelector:@selector(queryDbStructureWithUserInfo:) toTarget:mySQLConnection withObject:[NSDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithBool:YES], @"forceUpdate", nil]];

		}
	}
}

/**
 * Renames a table, view, procedure or function. Also handles only changes in case!
 * This function ONLY changes the database. It does NOT refresh the views etc.
 * CAREFUL: This function raises an exception if renaming fails, and does not show an error message.
 */
- (void)renameTableOfType:(SPTableType)tableType from:(NSString *)oldTableName to:(NSString *)newTableName
{
	// check if the name really changed
	if ([oldTableName isEqualToString:newTableName]) return;

	// check if only the case changed - then we have to do two renames, see http://code.google.com/p/sequel-pro/issues/detail?id=484
	if ([[oldTableName lowercaseString] isEqualToString:[newTableName lowercaseString]])
	{
		// first try finding an unused temporary name
		// this code should be improved in case we find out that something uses table names like mytable-1, mytable-2, etc.
		NSString* tempTableName;
		int tempNumber;
		for(tempNumber=2; tempNumber<100; tempNumber++) {
			tempTableName = [NSString stringWithFormat:@"%@-%d",selectedTableName,tempNumber];
			if ([self isTableNameValid:tempTableName forType:tableType]) break;
		}
		if (tempNumber==100) {
			// we couldn't find a temporary name
			[NSException raise:@"No Tempname found" format:NSLocalizedString(@"An error occured while renaming '%@'. No temporary name could be found. Please try renaming to something else first.", @"rename table error - no temporary name found"), oldTableName];
		}

		[self renameTableOfType:tableType from:oldTableName to:tempTableName];
		[self renameTableOfType:tableType from:tempTableName to:newTableName];
		return;
	}

	//check if we are trying to rename a TABLE or a VIEW
	if (tableType == SPTableTypeView || tableType == SPTableTypeTable) {
		// we can use the rename table statement
		[mySQLConnection queryString:[NSString stringWithFormat:@"RENAME TABLE %@ TO %@", [oldTableName backtickQuotedString], [newTableName backtickQuotedString]]];
		// check for errors
		if ([mySQLConnection queryErrored]) {
			[NSException raise:@"MySQL Error" format:NSLocalizedString(@"An error occured while renaming '%@'.\n\nMySQL said: %@", @"rename table error informative message"), oldTableName, [mySQLConnection getLastErrorMessage]];
		}
		return;
	}

	//check if we are trying to rename a PROCEDURE or a FUNCTION
	if (tableType == SPTableTypeProc || tableType == SPTableTypeFunc) {
		// procedures and functions can only be renamed if one creates a new one and deletes the old one

		// first get the create syntax
		NSString *stringTableType = @"";

		switch (tableType){
			case SPTableTypeProc: stringTableType = @"PROCEDURE"; break;
			case SPTableTypeFunc: stringTableType = @"FUNCTION"; break;
		}

		MCPResult *theResult  = [mySQLConnection queryString:[NSString stringWithFormat:@"SHOW CREATE %@ %@", stringTableType, [oldTableName backtickQuotedString] ] ];
		if ([mySQLConnection queryErrored]) {
			[NSException raise:@"MySQL Error" format:NSLocalizedString(@"An error occured while renaming. I couldn't retrieve the syntax for '%@'.\n\nMySQL said: %@", @"rename precedure/function error - can't retrieve syntax"), oldTableName, [mySQLConnection getLastErrorMessage]];
		}
		[theResult setReturnDataAsStrings:YES];
		NSString *oldCreateSyntax = [[theResult fetchRowAsArray] objectAtIndex:2];

		// replace the old name with the new name
		NSRange rangeOfProcedureName = [oldCreateSyntax rangeOfString: [NSString stringWithFormat:@"%@ %@", stringTableType, [oldTableName backtickQuotedString] ] ];
		if (rangeOfProcedureName.length == 0) {
			[NSException raise:@"Unknown Syntax" format:NSLocalizedString(@"An error occured while renaming. The CREATE syntax of '%@' could not be parsed.", @"rename error - invalid create syntax"), oldTableName];
		}
		NSString *newCreateSyntax = [oldCreateSyntax stringByReplacingCharactersInRange: rangeOfProcedureName
			withString: [NSString stringWithFormat:@"%@ %@", stringTableType, [newTableName backtickQuotedString] ] ];
		[mySQLConnection queryString: newCreateSyntax];
		if ([mySQLConnection queryErrored]) {
			[NSException raise:@"MySQL Error" format:NSLocalizedString(@"An error occured while renaming. I couldn't recreate '%@'.\n\nMySQL said: %@", @"rename precedure/function error - can't recreate procedure"), oldTableName, [mySQLConnection getLastErrorMessage]];
		}

		[mySQLConnection queryString: [NSString stringWithFormat: @"DROP %@ %@", stringTableType, [oldTableName backtickQuotedString]]];
		if ([mySQLConnection queryErrored]) {
			[NSException raise:@"MySQL Error" format:NSLocalizedString(@"An error occured while renaming. I couldn't delete '%@'.\n\nMySQL said: %@", @"rename precedure/function error - can't delete old procedure"), oldTableName, [mySQLConnection getLastErrorMessage]];
		}
		return;
	}

	[NSException raise:@"Object of unknown type" format:NSLocalizedString(@"An error occured while renaming. '%@' is of an unknown type.", @"rename error - don't know what type the renamed thing is"), oldTableName];
}


/**
 * Check tableName for length and if the tableName doesn't match
 * against current database table/view names (case-insensitive).
 */
- (BOOL)isTableNameValid:(NSString *)tableName forType:(SPTableType)tableType
{
    return [self isTableNameValid:tableName forType:tableType ignoringSelectedTable:NO];
}

/**
 * Check tableName for length and if the tableName doesn't match
 * against current database table/view names (case-insensitive).
 */
- (BOOL)isTableNameValid:(NSString *)tableName forType:(SPTableType)tableType ignoringSelectedTable:(BOOL)ignoreSelectedTable
{
	BOOL isValid = YES;

	// delete trailing whitespaces since 'foo  ' or '   ' are not valid table names
	NSString *fieldStr = [tableName stringByMatching:@"(.*?)\\s*$" capture:1];
	NSString *lowercaseFieldStr = [fieldStr lowercaseString];

	// If table name has trailing whitespaces return 'no valid'
	if([fieldStr length] != [tableName length]) return NO;

	// empty table names are invalid
	if([fieldStr length] == 0) return NO;


	NSArray *similarTables;
	switch (tableType) {
		case SPTableTypeView:
		case SPTableTypeTable:
			similarTables = [self allTableAndViewNames];
			break;
		case SPTableTypeProc:
			similarTables = [self allProcedureNames];
			break;
		case SPTableTypeFunc:
			similarTables = [self allFunctionNames];
			break;
		default:
		// if some other table type is given, just return yes
		// better a mysql error than not being able to change something at all
		return YES;
	}

	for(id table in similarTables) {
		//compare case insensitive here
		if([lowercaseFieldStr isEqualToString:[table lowercaseString]]) {
			if (ignoreSelectedTable) {
				// if table is the selectedTable, ignore it
				// we must compare CASE SENSITIVE here!
				if ([table isEqualToString:selectedTableName]) continue;
			}
			isValid = NO;
			break;
		}
	}
	return isValid;
}

@end