Friday, December 30, 2011

Creating a Flex AIR text editor: Part 81

In this tutorial we will fix up more bugs.

We have 2 issues with the program right now, which I listed in the previous tutorial. Here they are:

1) The program now sometimes inserts additional lines to the text area when saving/loading files. This may or may not be related to EditManager.

2) The Insert File Details, Reload, Delete and Rename features do not update their 'enabled' property to true after the user creates a new tab and saves it. It is only updated when the tab is changed to another one and then back to the new one.

Firstly, let's take care of the newline problem first.

The thing is, it is actually related to the EditManager, as far as I know. Because the EditManager now works properly, it is connected to the text area the whole time, and, as far as I can see, it tends to manage newlines in its own way. The problem only occurs after some new lines are entered (perhaps after insertText is used) and the tab is saved. After it is loaded after that save, new lines are added everywhere.

To fix this, I had to comment out the str.replace line in saveFile, and that's it:

private function saveFile(text:String, location:String, updateIndexNeeded:Boolean = true):void {
var file:File = new File(location);
var stream:FileStream = new FileStream();
stream.open(file, FileMode.WRITE);
var str:String = text;
//str = str.replace(/\n/g, File.lineEnding);
stream.writeMultiByte(str, currentEncoding);
stream.close();
if (closeAfterConfirm && tabsToClose == 0 && saveWait) {
FlexGlobals.topLevelApplication.close();
}
saveWait = false;
if (updateIndexNeeded) {
refreshData();
}
doSaveQueue();
changeTitle();
 }

You don't have to do the same in the loadFile function, though. I tested it a lot, and it seems to work properly this way.

Now, let's move on to the second problem. The issue here is that instead of binding a conditional to the enabled properties for the menu items, we need to bind a boolean variable instead.

Declare it first:

[Bindable]
private var hasLocation:Boolean = false;

And bind this value to the 4 items in the XML:

<fx:XML id="windowMenu">
<root>
<menuitem label="File">
<menuitem label="New" key="n" controlKey="true" />
<menuitem label="Open" key="o" controlKey="true" />
<menuitem label="Recent">
</menuitem>
<menuitem type="separator"/>
<menuitem label="Rename..." enabled="{hasLocation}" />
<menuitem label="Delete file" enabled="{hasLocation}" />
<menuitem label="Reload file" enabled="{hasLocation}" />
<menuitem type="separator"/>
<menuitem label="Save" key="s" controlKey="true" />
<menuitem label="Save As" key="s" controlKey="true" shiftKey="true" />
<menuitem label="Save All" key="s" controlKey="true" altKey="true" />
<menuitem type="separator"/>
<menuitem label="Print" key="p" controlKey="true" />
</menuitem>
<menuitem label="Edit">
<menuitem label="Undo" key="z" controlKey="true" enabled="{canUndo}" />
<menuitem label="Redo" key="y" controlKey="true" enabled="{canRedo}" />
<menuitem type="separator"/>
<menuitem label="Cut" key="x" controlKey="true" enabled="{textArea.selectionActivePosition!=textArea.selectionAnchorPosition}" />
<menuitem label="Copy" key="c" controlKey="true" enabled="{textArea.selectionActivePosition!=textArea.selectionAnchorPosition}" />
<menuitem label="Paste" key="v" controlKey="true" enabled="{canPaste}" />
<menuitem type="separator"/>
<menuitem label="Select all" key="a" controlKey="true" />
<menuitem type="separator"/>
<menuitem label="Find/Replace..." key="f" controlKey="true" />
</menuitem>
<menuitem label="Insert">
<menuitem label="From file..." />
<menuitem label="File details" enabled="{hasLocation}"/>
<menuitem label="Timestamp" />
</menuitem>
<menuitem label="Settings">
<menuitem label="Word wrap" type="check" toggled="{pref_wrap}" />
<menuitem label="Font..."/>
</menuitem>
<menuitem label="View">
<menuitem label="Tool bar" type="check" toggled="{pref_toolbar}" />
<menuitem label="Status bar" type="check" toggled="{pref_status}" />
<menuitem label="Line count" type="check" toggled="{pref_linecount}" />
<menuitem label="Side pane" type="check" toggled="{pref_sidepane}" />
</menuitem>
<menuitem label="Encoding">
<menuitem label="UTF-8" type="check" toggled="{enc.getItemAt(0)}" ind="0" encoding="utf-8" />
<menuitem label="Unicode" type="check" toggled="{enc.getItemAt(1)}" ind="1" encoding="unicode" />
<menuitem label="ASCII" type="check" toggled="{enc.getItemAt(2)}" ind="2" encoding="us-ascii" />
</menuitem>
</root>
</fx:XML>

Now we need to set this value in some parts of the code. The first function we need to do that in is the doNew() funcion, set hasLocation to false here:

private function doNew():void {
statusMessage = "[ " + new Date().toLocaleTimeString() + " ] New tab created";
updateStatus();
untitledNum++;
tabData.addItem( { title:"Untitled("+untitledNum+")", textData:"", saved:false, location:""} );
tabSelectedIndex = tabData.length - 1;
hasLocation = false;
tabChange();
updateTextSize();
}

In tabChange(), add a conditional at the end of the function and set hasLocation to true or false, depending on the location value:

public function tabChange(from:String = "none", ind:int = 0, createOperation:Boolean = true):void {
if (from == "tabbar") {
tabSelectedIndex = tabBar.selectedIndex;
sideList.selectedIndex = tabSelectedIndex;
}
if (from == "sidelist") {
tabSelectedIndex = sideList.selectedIndex;
tabBar.selectedIndex = tabSelectedIndex;
}
if (from == "operation") {
tabSelectedIndex = ind;
}
tabData[previousIndex].textData = textArea.text;
tabData[previousIndex].selectedActive = textArea.selectionActivePosition;
tabData[previousIndex].selectedAnchor = textArea.selectionAnchorPosition;

if (createOperation) {
var operation:TabOperation = new TabOperation(previousIndex, tabSelectedIndex, undoManager);
undoManager.pushUndo(operation);

changeTextTo(tabData[tabSelectedIndex].textData);

var operation2:TabOperation = new TabOperation(previousIndex, tabSelectedIndex, undoManager);
undoManager.pushUndo(operation2);
}

previousIndex = tabSelectedIndex;
updateStatus();
countLines();
textChange();
changeTitle();
updateSearch();
hasLocation = (tabData.getItemAt(tabSelectedIndex).location == '')?(false):(true);
}

Now go to the doSaveAs() function and set hasLocation to true in the fileSave() function:

private function doSaveAs(text:String, ind:int, updateIndexNeeded:Boolean = true):void {
var file:File = new File();
file.browseForSave("Save " + tabData[ind].title);
file.addEventListener(Event.SELECT, fileSave);
file.addEventListener(Event.CANCEL, fileCancel);

function fileSave(evt:Event):void {
if (file.name.length > 0) {
// See if user entered extension for the file (for example .txt)
// If not, add .txt by default
var extReg:RegExp = /\.([a-z0-9]{2,})/i;
if (extReg.test(file.name)) {
tabData[ind].location = file.nativePath;
tabData[ind].title = file.name;
tabData[ind].saved = true;
saveFile(text, file.nativePath, updateIndexNeeded);
}else {
tabData[ind].location = file.nativePath + ".txt";
tabData[ind].title = file.name + ".txt";
tabData[ind].saved = true;
saveFile(text, file.nativePath + ".txt", updateIndexNeeded);
}
hasLocation = true;
}else{
Alert.show("You need to enter a name for your file.", "Error");
}
}

function fileCancel(evt:Event):void {
if (closeAfterConfirm && tabsToClose == 0 && saveWait) {
FlexGlobals.topLevelApplication.close();
}
doSaveQueue();
}
}

And that is it.

Full code:

<?xml version="1.0" encoding="utf-8"?>
<s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009"
                       xmlns:s="library://ns.adobe.com/flex/spark"
                       xmlns:mx="library://ns.adobe.com/flex/mx"
   xmlns:custom="*"
   creationComplete="init();" title="Kirpad" showStatusBar="{pref_status}"
   minWidth="400" minHeight="200" height="700" width="900">
   
<s:menu>
<mx:FlexNativeMenu dataProvider="{windowMenu}" showRoot="false" labelField="@label" keyEquivalentField="@key" itemClick="menuSelect(event);" />
</s:menu>

<fx:Script>
<![CDATA[
import flash.data.SQLConnection;
import flash.events.KeyboardEvent;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.events.NativeWindowBoundsEvent;
import flash.filesystem.File;
import flash.filesystem.FileStream;
import flash.net.SharedObject;
import flashx.textLayout.accessibility.TextAccImpl;
import flashx.textLayout.edit.EditManager;
import flashx.textLayout.edit.TextScrap;
import flashx.textLayout.formats.TextLayoutFormat;
import mx.collections.ArrayCollection;
import mx.controls.Alert;
import mx.controls.TextArea;
import mx.events.FlexNativeMenuEvent;
import flashx.textLayout.elements.TextFlow;
import flashx.textLayout.elements.Configuration;
import flash.system.System;
import flash.desktop.Clipboard;
import flash.desktop.ClipboardFormats;
import flash.ui.Mouse;
import mx.events.CloseEvent;
import flash.ui.ContextMenu;
import flash.ui.ContextMenuItem;
import flash.events.ContextMenuEvent;
import mx.events.ResizeEvent;
import mx.core.FlexGlobals;
import mx.printing.FlexPrintJob;
import mx.printing.FlexPrintJobScaleType;
import flashx.undo.UndoManager;
import flashx.textLayout.operations.UndoOperation;
import flash.data.SQLConnection;
import flash.events.SQLEvent;
import flash.data.SQLStatement;
import flash.data.SQLResult;
import flash.data.SQLMode;
import flash.net.Responder;
import XML;
import XMLList;
import mx.managers.PopUpManager;
import flashx.textLayout.operations.InsertTextOperation;
import flashx.textLayout.edit.SelectionState;

private var preferences:SharedObject = SharedObject.getLocal("kirpadPreferences");
[Bindable]
private var pref_wrap:Boolean = true;
[Bindable]
private var pref_status:Boolean = true;
[Bindable]
private var pref_toolbar:Boolean = true;
[Bindable]
private var pref_sidepane:Boolean = true;
[Bindable]
private var pref_linecount:Boolean = true;
[Bindable]
public var pref_fontsettings:Object = new Object();
[Bindable]
private var pref_recent:ArrayCollection = new ArrayCollection();

private var initHeight:Number;
private var heightFixed:Boolean = false;

private var statusMessage:String;
[Bindable]
private var textHeight:Number;
[Bindable]
private var textWidth:Number;
[Bindable]
private var textY:Number;
[Bindable]
private var textX:Number;
[Bindable]
private var tabY:Number;
[Bindable]
private var sidePaneY:Number;
[Bindable]
private var sidePaneX:Number;
[Bindable]
private var sidePaneHeight:Number;
[Bindable]
private var sidePaneWidth:Number = 180;
[Bindable]
private var sideContentWidth:Number = 170;
[Bindable]
private var tabWidth:Number;
[Bindable]
private var lineCountWidth:Number = 40;
[Bindable]
private var lineNumbers:String = "1";
[Bindable]
private var lineDisplayedNum:int = 1;

[Bindable]
private var tabSelectedIndex:int = 0;

[Bindable]
private var canUndo:Boolean = false;
[Bindable]
private var canRedo:Boolean = false;
[Bindable]
private var canPaste:Boolean = false;

private var previousTextInOperation:String = "";
private var currentTextInOperation:String = "";

private var previousIndex:int = 0;
private var rightclickTabIndex:int = 0;
private var untitledNum:int = 0;
private var tabsToClose:int = 0;
private var closeAfterConfirm:Boolean = false;

public var fontWindow:FontWindow = new FontWindow();
public var snippetWindow:SnippetWindow = new SnippetWindow();

private var undoManager:UndoManager;
private var editManager:EditManager;

private var saveWait:Boolean = false;
private var saveAsQueue:Array = [];

public var connection:SQLConnection;
public var connection2:SQLConnection;

private var snippetData:Array;
private var categoryData:Array;

[Bindable]
public var snippetXML:XMLList;

private var searchResults:Array = [];
private var selectedResult:int = 0;

private var currentEncoding:String = "utf-8";
[Bindable]
private var enc:ArrayCollection = new ArrayCollection([true, false, false]);

private var cm:ContextMenu = new ContextMenu();
[Bindable]
private var hasLocation:Boolean = false;

private function init():void {
// Create a listener for every frame
addEventListener(Event.ENTER_FRAME, everyFrame);

// Set initHeight to the initial height value on start
initHeight = height;

//preferences.data.firsttime = null;

// Set preferences if loaded for the first time
if (preferences.data.firsttime == null) {
preferences.data.firsttime = true;
preferences.data.wrap = false;
preferences.data.status = true;
preferences.data.toolbar = true;
preferences.data.sidepane = true;
preferences.data.linecount = true;
preferences.data.recent = [];
preferences.data.fontsettings = {fontfamily:"Lucida Console", fontsize:14, fontstyle:"normal", fontweight:"normal", fontcolor:0x000000, bgcolor:0xffffff};
preferences.flush();
}

// Set preferences loaded from local storage
pref_wrap = preferences.data.wrap;
pref_status = preferences.data.status;
pref_toolbar = preferences.data.toolbar;
pref_sidepane = preferences.data.sidepane;
pref_fontsettings = preferences.data.fontsettings;
pref_linecount = preferences.data.linecount;
pref_recent = new ArrayCollection(preferences.data.recent);

// Allow insertion of tabs
var textFlow:TextFlow = textArea.textFlow;
var config:Configuration = Configuration(textFlow.configuration);
config.manageTabKey = true;

// Set status message
statusMessage = "[ " + new Date().toLocaleTimeString() + " ] Kirpad initialized";
updateStatus();

// Close all sub-windows if main window is closed
addEventListener(Event.CLOSING, onClose);

// Add listener for the event that is dispatched when new font settings are applied
fontWindow.addEventListener(Event.CHANGE, fontChange);

// Update real fonts with the data from the settings values
updateFonts();

// Create a listener for resizing
addEventListener(NativeWindowBoundsEvent.RESIZE, onResize);

// Context menu declaration for the tabbar control
var cm_close:ContextMenuItem = new ContextMenuItem("Close tab");
cm_close.addEventListener(ContextMenuEvent.MENU_ITEM_SELECT, tabContextClose);
var cm_closeother:ContextMenuItem = new ContextMenuItem("Close other tabs");
cm_closeother.addEventListener(ContextMenuEvent.MENU_ITEM_SELECT, tabContextCloseOther);
var cm_save:ContextMenuItem = new ContextMenuItem("Save");
cm_save.addEventListener(ContextMenuEvent.MENU_ITEM_SELECT, tabContextSave);
var cm_duplicate:ContextMenuItem = new ContextMenuItem("Duplicate");
cm_duplicate.addEventListener(ContextMenuEvent.MENU_ITEM_SELECT, tabContextDuplicate);
var cm_rename:ContextMenuItem = new ContextMenuItem("Rename");
cm_rename.addEventListener(ContextMenuEvent.MENU_ITEM_SELECT, tabContextRename);
var cm_delete:ContextMenuItem = new ContextMenuItem("Delete file");
cm_delete.addEventListener(ContextMenuEvent.MENU_ITEM_SELECT, tabContextDelete);
var cm_reload:ContextMenuItem = new ContextMenuItem("Reload file");
cm_reload.addEventListener(ContextMenuEvent.MENU_ITEM_SELECT, tabContextReload);

cm.items = [cm_close, cm_closeother, cm_save, cm_duplicate, cm_rename, cm_delete, cm_reload];
cm.hideBuiltInItems();
tabBar.contextMenu = cm;
tabBar.addEventListener(MouseEvent.RIGHT_MOUSE_DOWN, tabRightClick);

// Context menu declaration for the tab management list control
sideList.contextMenu = cm;
sideList.addEventListener(MouseEvent.RIGHT_MOUSE_DOWN, listRightClick);

// Listen to keyboard
addEventListener(KeyboardEvent.KEY_DOWN, onKeyDown);

// Undo management
undoManager = new UndoManager();
editManager = new EditManager(undoManager);
textArea.textFlow.interactionManager = editManager;

// Select first tab
tabChange();

// Database management
var dbFile:File = File.applicationStorageDirectory.resolvePath("database.db");
connection = new SQLConnection();
connection2 = new SQLConnection();
connection2.open(dbFile, SQLMode.CREATE);
connection.addEventListener(SQLEvent.OPEN, onOpen);
connection.openAsync(dbFile, SQLMode.CREATE);
}

private function menuSelect(evt:FlexNativeMenuEvent):void {
(evt.item.@label == "New")?(doNew()):(void);
(evt.item.@label == "Open")?(doOpen()):(void);
(evt.item.@label == "Save")?(doSave(tabSelectedIndex)):(void);
(evt.item.@label == "Save As")?(doSaveAs(textArea.text, tabSelectedIndex)):(void);
(evt.item.@label == "Save All")?(doSaveAll()):(void);
(evt.item.@label == "Word wrap")?(pref_wrap = !pref_wrap):(void);
(evt.item.@label == "Cut")?(doCut()):(void);
(evt.item.@label == "Copy")?(doCopy()):(void);
(evt.item.@label == "Paste")?(doPaste()):(void);
(evt.item.@label == "Select all")?(doSelectall()):(void);
(evt.item.@label == "Status bar")?(pref_status = !pref_status):(void);
(evt.item.@label == "Tool bar")?(pref_toolbar = !pref_toolbar):(void);
(evt.item.@label == "Side pane")?(pref_sidepane = !pref_sidepane):(void);
(evt.item.@label == "Line count")?(pref_linecount = !pref_linecount):(void);
(evt.item.@label == "Font...")?(doFont()):(void);
(evt.item.@label == "Print")?(doPrint()):(void);
(evt.item.@label == "Undo")?(doUndo()):(void);
(evt.item.@label == "Redo")?(doRedo()):(void);
(evt.item.@label == "Find/Replace...")?(doFind()):(void);
(evt.item.@label == "Recent")?(openRecent()):(void);
("@encoding" in evt.item)?(doEncode(evt.item.@encoding, evt.item.@ind)):(void);
(evt.item.@label == "Rename...")?(openRename()):(void);
(evt.item.@label == "Delete file")?(doDelete()):(void);
(evt.item.@label == "Reload file")?(doReload()):(void);
(evt.item.@label == "From file...")?(doInsertFile()):(void);
(evt.item.@label == "File details")?(doFileDetails()):(void);
(evt.item.@label == "Timestamp")?(doTimestamp()):(void);
savePreferences();
updateStatus();
if (pref_wrap) {
pref_linecount = false;
}
updateTextSize();
countLines();
}

private function savePreferences():void {
preferences.data.wrap = pref_wrap;
preferences.data.status = pref_status;
preferences.data.toolbar = pref_toolbar;
preferences.data.fontsettings = pref_fontsettings;
preferences.data.sidepane = pref_sidepane;
preferences.data.linecount = pref_linecount;
preferences.data.recent = pref_recent.toArray();
preferences.flush();
}

private function doCut():void {
var selectedText:String = textArea.text.substring(textArea.selectionActivePosition, textArea.selectionAnchorPosition);
System.setClipboard(selectedText);
insertText("");
}

private function doCopy():void {
var selectedText:String = textArea.text.substring(textArea.selectionActivePosition, textArea.selectionAnchorPosition);
System.setClipboard(selectedText);
}

private function doPaste():void{
var myClip:Clipboard = Clipboard.generalClipboard;
var pastedText:String = myClip.getData(ClipboardFormats.TEXT_FORMAT) as String;
insertText(pastedText);
}

private function doSelectall():void {
textArea.selectAll();
}

private function insertText(str:String):void {
editManager.insertText(str);
}

private function cursorFix():void{
Mouse.cursor = "ibeam";
}

private function everyFrame(evt:Event):void {
if (!heightFixed && height==initHeight) {
height = initHeight - 20;
if (height != initHeight) {
heightFixed = true;
updateTextSize();
}
}
updateLineScroll();
if (sideList.selectedIndices.length==0) {
sideList.selectedIndex = tabSelectedIndex;
}
canPaste = Clipboard.generalClipboard.hasFormat(ClipboardFormats.TEXT_FORMAT);
}

private function onResize(evt:ResizeEvent):void {
updateTextSize();
}

private function updateTextSize():void {
tabY = (toolBar.visible)?(toolBar.height):(0);
textX = (pref_linecount)?(lineCountWidth):(0);
var statusHeight:Number = (pref_status)?(statusBar.height):(0);
textWidth = (pref_sidepane)?(width - sidePaneWidth - textX):(width - textX);
tabWidth = textWidth + textX;
var tabbarScrollHeight:Number = (tabData.length * 170 > tabWidth)?(15):(0);
textY = tabBar.height + tabY + tabbarScrollHeight;
textHeight = height - textY - statusHeight;
focusManager.setFocus(textArea);
sidePaneHeight = textHeight + tabBar.height + tabbarScrollHeight;
sidePaneY = textY - tabBar.height - tabbarScrollHeight;
sidePaneX = width - sidePaneWidth;
}

private function updateStatus():void {
var str:String = new String();
str = (pref_wrap)?("Word wrapping on"):(caretPosition());
status = "Encoding: " + currentEncoding + "\t" + str + "\t" + statusMessage;
}

private function caretPosition():String {
var pos:int = textArea.selectionActivePosition;
var str:String = textArea.text.substring(0, pos);
var lines:Array = str.split("\n");
var line:int = lines.length;
var col:int = lines[lines.length - 1].length + 1;

return "Ln " + line + ", Col " + col;
}

private function doFont():void{
fontWindow.open();
fontWindow.activate();
fontWindow.visible = true;
fontWindow.setValues(pref_fontsettings.fontsize, pref_fontsettings.fontfamily, pref_fontsettings.fontstyle, pref_fontsettings.fontweight, pref_fontsettings.fontcolor, pref_fontsettings.bgcolor);
}

private function onClose(evt:Event):void {
if(!closeAfterConfirm){
evt.preventDefault();
var allWindows:Array = NativeApplication.nativeApplication.openedWindows;
for (var i:int = 1; i < allWindows.length; i++)
{
allWindows[i].close();
}

// Check if there are any unsaved tabs
var needSaving:Boolean = false;
tabsToClose = 0;

for (var u:int = 0; u < tabData.length; u++) {
if (tabData[u].saved == false) {
needSaving = true;
tabsToClose++;
}
}

// If there are unsaved tabs, dont close window yet, set closeAfterConfirm to true and close all tabs
if (needSaving) {
closeAfterConfirm = true;
for (var t:int = 0; t < tabData.length; t++) {
closeTab(t);
}
}
if (!needSaving) {
removeEventListener(Event.CLOSING, onClose);
FlexGlobals.topLevelApplication.close();
}
}
}

private function fontChange(evt:Event):void{
pref_fontsettings.fontfamily = fontWindow.fontCombo.selectedItem.fontName;
pref_fontsettings.fontsize = fontWindow.sizeStepper.value;

if (fontWindow.styleCombo.selectedIndex == 0) {
pref_fontsettings.fontstyle = "normal";
pref_fontsettings.fontweight = "normal";
}
if (fontWindow.styleCombo.selectedIndex == 1) {
pref_fontsettings.fontstyle = "italic";
pref_fontsettings.fontweight = "normal";
}
if (fontWindow.styleCombo.selectedIndex == 2) {
pref_fontsettings.fontstyle = "normal";
pref_fontsettings.fontweight = "bold";
}
if (fontWindow.styleCombo.selectedIndex == 3) {
pref_fontsettings.fontstyle = "italic";
pref_fontsettings.fontweight = "bold";
}

pref_fontsettings.fontcolor = fontWindow.colorPicker.selectedColor;
pref_fontsettings.bgcolor = fontWindow.bgColorPicker.selectedColor;

savePreferences();
updateFonts();
}

private function updateFonts():void{
textArea.setStyle("fontFamily", pref_fontsettings.fontfamily);
textArea.setStyle("fontSize", pref_fontsettings.fontsize);
textArea.setStyle("fontStyle", pref_fontsettings.fontstyle);
textArea.setStyle("fontWeight", pref_fontsettings.fontweight);
textArea.setStyle("color", pref_fontsettings.fontcolor);
textArea.setStyle("contentBackgroundColor", pref_fontsettings.bgcolor);

lineCount.setStyle("fontFamily", pref_fontsettings.fontfamily);
lineCount.setStyle("fontSize", pref_fontsettings.fontsize);
lineCount.setStyle("fontStyle", pref_fontsettings.fontstyle);
lineCount.setStyle("fontWeight", pref_fontsettings.fontweight);
lineCount.setStyle("color", pref_fontsettings.fontcolor);
lineCount.setStyle("contentBackgroundColor", pref_fontsettings.bgcolor);
updateSearch();
}

private function onTabClose(evt:Event):void {
var tabWidth:Number = tabBar.width / tabData.length;
var cIndex:int = Math.floor(tabBar.mouseX / tabWidth);
tabSelectedIndex = cIndex;
tabChange();
closeTab(tabSelectedIndex);
}

private function onListClose(evt:Event):void {
tabSelectedIndex = sideList.selectedIndex;
tabChange();
closeTab(tabSelectedIndex);
}

private function closeTab(index:int):void {
if (tabData[index].location == "" && tabData[index].textData == "" && tabData.length == 1) {
FlexGlobals.topLevelApplication.close();
} else
if (tabData[index].location == "" && tabData[index].textData == "") {
tabsToClose--;
removeTab(index);
} else
if (tabData[index].saved) {
removeTab(index);
} else
if (!tabData[index].saved) {
Alert.show("Save " + tabData[index].title + " before closing?", "Confirmation", Alert.YES | Alert.NO, null, confirmClose);
}
function confirmClose(evt:CloseEvent):void {
tabsToClose--;
if (evt.detail == Alert.YES) {
tabSelectedIndex = index;
tabChange();
removeTab(index, true);
doSave(index, false);
}else {
removeTab(index);
}
}
}

private function removeTab(index:int, waitForSave:Boolean = false):void {
if (tabData[index].location != "") {
addRecent(tabData[index]);
}
if(!closeAfterConfirm){
// if this is the last tab, create a new empty tab
if (tabData.length == 1) {
tabData.addItem( { title:"Untitled", textData:"", saved:false, location:""} );
}
statusMessage = "[ " + new Date().toLocaleTimeString() + " ] Tab closed: " + tabData[index].title;
updateStatus();
if (tabData.length > index+1) {
tabSelectedIndex = index;
}else
if (tabData.length <= index+1) {
tabSelectedIndex = tabData.length-2;
}
tabData.removeItemAt(index);
previousIndex = tabSelectedIndex;

// refresh tabBar tabs to clean component glitch
tabBar.dataProvider = new ArrayCollection([]);
tabBar.dataProvider = tabData;
tabBar.selectedIndex = tabSelectedIndex;

//textArea.text = tabData[tabSelectedIndex].textData;
changeTextTo(tabData[tabSelectedIndex].textData);
editManager.selectRange(tabData[tabSelectedIndex].selectedAnchor, tabData[tabSelectedIndex].selectedActive);
}
if (closeAfterConfirm && tabsToClose == 0 && waitForSave == false) {
FlexGlobals.topLevelApplication.close();
}
if (waitForSave) {
saveWait = true;
}
countLines();
updateTextSize();
undoManager.clearAll();
textChange();
}

private function doNew():void {
statusMessage = "[ " + new Date().toLocaleTimeString() + " ] New tab created";
updateStatus();
untitledNum++;
tabData.addItem( { title:"Untitled("+untitledNum+")", textData:"", saved:false, location:""} );
tabSelectedIndex = tabData.length - 1;
hasLocation = false;
tabChange();
updateTextSize();
}

public function tabChange(from:String = "none", ind:int = 0, createOperation:Boolean = true):void {
if (from == "tabbar") {
tabSelectedIndex = tabBar.selectedIndex;
sideList.selectedIndex = tabSelectedIndex;
}
if (from == "sidelist") {
tabSelectedIndex = sideList.selectedIndex;
tabBar.selectedIndex = tabSelectedIndex;
}
if (from == "operation") {
tabSelectedIndex = ind;
}
tabData[previousIndex].textData = textArea.text;
tabData[previousIndex].selectedActive = textArea.selectionActivePosition;
tabData[previousIndex].selectedAnchor = textArea.selectionAnchorPosition;

if (createOperation) {
var operation:TabOperation = new TabOperation(previousIndex, tabSelectedIndex, undoManager);
undoManager.pushUndo(operation);

changeTextTo(tabData[tabSelectedIndex].textData);

var operation2:TabOperation = new TabOperation(previousIndex, tabSelectedIndex, undoManager);
undoManager.pushUndo(operation2);
}

previousIndex = tabSelectedIndex;
updateStatus();
countLines();
textChange();
changeTitle();
updateSearch();
hasLocation = (tabData.getItemAt(tabSelectedIndex).location == '')?(false):(true);
}

private function changeTextTo(str:String):void {
var tempSaved:Boolean = tabData[tabSelectedIndex].saved;
editManager.selectAll();
var insertOp:InsertTextOperation = new InsertTextOperation(editManager.getSelectionState(), str);
editManager.doOperation(insertOp);
tabData[tabSelectedIndex].saved = tempSaved;
editManager.selectRange(tabData[tabSelectedIndex].selectedAnchor, tabData[tabSelectedIndex].selectedActive);
textArea.scrollToRange(tabData[tabSelectedIndex].selectedAnchor, tabData[tabSelectedIndex].selectedActive);
}

private function tabContextClose(evt:ContextMenuEvent):void{
closeTab(rightclickTabIndex);
}

private function tabContextCloseOther(evt:ContextMenuEvent):void {
var len:int = tabData.length-1;
for (var i:int = len; i >= 0; i--) {
if (i != rightclickTabIndex && (tabData[i].saved || (!tabData[i].saved && tabData[i].textData=="" && tabData[i].location==""))) {
closeTab(i);
}
}

len = tabData.length-1;
for (var u:int = 0; u < len; u++) {
if (u != rightclickTabIndex) {
closeTab(u);
}
}
}

private function tabContextSave(evt:ContextMenuEvent):void {
tabSelectedIndex = rightclickTabIndex;
tabChange();
doSave(rightclickTabIndex);
}

private function tabContextDuplicate(evt:ContextMenuEvent):void {
tabSelectedIndex = rightclickTabIndex;
tabChange();
statusMessage = "[ " + new Date().toLocaleTimeString() + " ] " + tabData[rightclickTabIndex].title + " duplicated";
updateStatus();
tabData.addItem( { title:"Copy of " + tabData[rightclickTabIndex].title, textData: tabData[rightclickTabIndex].textData, saved:false, location:""} );
tabSelectedIndex = tabData.length - 1;
tabChange();
updateTextSize();
}

private function tabRightClick(evt:MouseEvent):void {
var tabWidth:Number = tabBar.width / tabData.length;
var rcIndex:int = Math.floor(tabBar.mouseX / tabWidth);
rightclickTabIndex = rcIndex;
if (tabData[rightclickTabIndex].location == "") {
cm.items[4].enabled = false;
cm.items[5].enabled = false;
cm.items[6].enabled = false;
}else {
cm.items[4].enabled = true;
cm.items[5].enabled = true;
cm.items[6].enabled = true;
}
}

private function listRightClick(evt:MouseEvent):void {
var tabHeight:Number = 20;
var rcIndex:int = Math.floor((sideList.mouseY + sideList.scroller.verticalScrollBar.value) / tabHeight);
rightclickTabIndex = rcIndex;
if (tabData[rightclickTabIndex].location == "") {
cm.items[4].enabled = false;
cm.items[5].enabled = false;
cm.items[6].enabled = false;
}else {
cm.items[4].enabled = true;
cm.items[5].enabled = true;
cm.items[6].enabled = true;
}
}

private function onKeyDown(evt:KeyboardEvent):void{
if (evt.ctrlKey) {
// Ctrl+TAB - next tab
if (evt.keyCode == 9 && !evt.shiftKey) {
if (tabData.length - tabSelectedIndex > 1) {
tabSelectedIndex++;
tabChange();
}
}
// Ctrl+Shift+TAB - previous tab
if (evt.keyCode == 9 && evt.shiftKey) {
if (tabSelectedIndex > 0) {
tabSelectedIndex--;
tabChange();
}
}
// Ctrl+number (1-8) - go to numbered tab
if (evt.keyCode >= 49 && evt.keyCode <= 56) {
var num:int = evt.keyCode - 48;
if (tabData.length > num - 1) {
tabSelectedIndex = num - 1;
tabChange();
}
}
// Ctrl+9 - go to last tab
if (evt.keyCode == 57) {
tabSelectedIndex = tabData.length - 1;
tabChange();
}
}
}

private function closeSidePane():void {
if(searchInput != null){
searchInput.text = "";
}
updateSearch();
pref_sidepane = !pref_sidepane
savePreferences();
updateTextSize();
}

private function countLines():void {
if (pref_linecount && !pref_wrap) {
var totalLines:int = textArea.text.split("\n").length;
if (totalLines != lineDisplayedNum) {
updateTextSize();
updateLineCount(totalLines, totalLines-lineDisplayedNum, lineDisplayedNum);
lineDisplayedNum = totalLines;
}
}
}

private function updateLineCount(total:int, difference:int, current:int):void {
if (difference > 0) {
for (var i:int = current + 1; i < (total+1); i++) {
lineNumbers += "\n" + (i);
}
}
if (difference < 0) {
var charsInTheEnd:int = 0;
for (var u:int = 0; u < -difference; u++) {
charsInTheEnd += ((current - u).toString().length + 1);
}
lineNumbers = lineCount.text.substring(0, lineCount.text.length - charsInTheEnd);
}
}

private function updateLineScroll():void{
lineCount.scroller.verticalScrollBar.value = textArea.scroller.verticalScrollBar.value;
}

private function doPrint():void {
var printJob:FlexPrintJob = new FlexPrintJob();
if (!printJob.start()) return;
tempText.visible = true;
tempText.setStyle("lineBreak", "toFit");
tempText.text = textArea.text;
tempText.width = printJob.pageWidth;
tempText.heightInLines = NaN;
tempText.setStyle("horizontalScrollPolicy", "off");
tempText.setStyle("verticalScrollPolicy", "off");
printJob.printAsBitmap = false;
printJob.addObject(tempText, "matchWidth");
printJob.send();
tempText.visible = false;
}

private function textChange():void {
tabData[tabSelectedIndex].textData = textArea.text;
canUndo = undoManager.canUndo();
canRedo = undoManager.canRedo();
focusManager.setFocus(textArea);
}

private function doUndo():void {
if (getClass(undoManager.peekUndo()) == TabOperation) {
undoManager.undo();
var tempSaved:Boolean = tabData[tabSelectedIndex].saved;
undoManager.undo();
tabData[tabSelectedIndex].saved = tempSaved;
}
editManager.selectRange(tabData[tabSelectedIndex].selectedAnchor, tabData[tabSelectedIndex].selectedActive);
undoManager.undo();
textChange();
}

private function doRedo():void {
if (getClass(undoManager.peekRedo()) == TabOperation) {
undoManager.redo();
var tempSaved:Boolean = tabData[tabSelectedIndex].saved;
undoManager.redo();
tabData[tabSelectedIndex].saved = tempSaved;
}
editManager.selectRange(tabData[tabSelectedIndex].selectedAnchor, tabData[tabSelectedIndex].selectedActive);
undoManager.redo();
textChange();
}

private function getClass(obj:Object):Class {
return Class(getDefinitionByName(getQualifiedClassName(obj)));
}

private function doOpen():void {
var file:File = new File();
file.browseForOpen("Open document", [new FileFilter("Text documents", "*.txt"), new FileFilter("All files", "*")]);
file.addEventListener(Event.SELECT, fileLoad);

function fileLoad(evt:Event):void {
loadFile(file);
}
}

private function loadFile(file:File):void {
if(fileDuplicateCheck(file.nativePath)){
var stream:FileStream = new FileStream();
stream.open(file, FileMode.READ);
var str:String = stream.readMultiByte(stream.bytesAvailable, currentEncoding);
stream.close();
str = str.replace(File.lineEnding, "\n");
statusMessage = "[ " + new Date().toLocaleTimeString() + " ] " + file.name + " opened";
updateStatus();
tabData.addItem( { title:file.name, textData: str, saved:true, location:file.nativePath, selectedAnchor:0, selectedActive:0} );
tabSelectedIndex = tabData.length - 1;
tabChange();
updateTextSize();
}else {
Alert.show("File " + file.name + " is already open","Error");
}
}

private function fileDuplicateCheck(loc:String):Boolean {
var toReturn:Boolean = true;
for (var i:int = 0; i < tabData.length; i++) {
if (tabData[i].location == loc) {
toReturn = false;
tabSelectedIndex = i;
tabChange();
break;
}
}
return toReturn;
}

private function saveUpdate():void {
if (tabData[tabSelectedIndex].saved) {
tabData[tabSelectedIndex].saved = false;

tabBar.dataProvider = new ArrayCollection([]);
tabBar.dataProvider = tabData;
tabBar.selectedIndex = tabSelectedIndex;

sideList.dataProvider = tabData;
changeTitle();
}
}

private function doSave(ind:int, updateIndexNeeded:Boolean = true):void {
if(!tabData[ind].saved){
if (tabData[ind].location != "") {
saveFile(textArea.text, tabData[ind].location, updateIndexNeeded);
statusMessage = "[ " + new Date().toLocaleTimeString() + " ] " + tabData[ind].title + " saved";
updateStatus();
tabData[ind].saved = true;
}else{
doSaveAs(textArea.text, ind, updateIndexNeeded);
}
}
}

private function doSaveAll():void {
saveAsQueue = [];
for (var i:int = 0; i < tabData.length; i++) {
saveAsQueue.push(i);
}
doSaveQueue();
}

private function doSaveQueue():void {
if (saveAsQueue.length > 0) {
var ind:int = saveAsQueue[0];
saveAsQueue.splice(0, 1);
tabSelectedIndex = ind;
tabChange();
doSave(ind);
}
}

private function refreshData():void {
tabBar.dataProvider = new ArrayCollection([]);
tabBar.dataProvider = tabData;
tabBar.selectedIndex = 0;
tabBar.selectedIndex = tabSelectedIndex;

sideList.dataProvider = tabData;
}

private function doSaveAs(text:String, ind:int, updateIndexNeeded:Boolean = true):void {
var file:File = new File();
file.browseForSave("Save " + tabData[ind].title);
file.addEventListener(Event.SELECT, fileSave);
file.addEventListener(Event.CANCEL, fileCancel);

function fileSave(evt:Event):void {
if (file.name.length > 0) {
// See if user entered extension for the file (for example .txt)
// If not, add .txt by default
var extReg:RegExp = /\.([a-z0-9]{2,})/i;
if (extReg.test(file.name)) {
tabData[ind].location = file.nativePath;
tabData[ind].title = file.name;
tabData[ind].saved = true;
saveFile(text, file.nativePath, updateIndexNeeded);
}else {
tabData[ind].location = file.nativePath + ".txt";
tabData[ind].title = file.name + ".txt";
tabData[ind].saved = true;
saveFile(text, file.nativePath + ".txt", updateIndexNeeded);
}
hasLocation = true;
}else{
Alert.show("You need to enter a name for your file.", "Error");
}
}

function fileCancel(evt:Event):void {
if (closeAfterConfirm && tabsToClose == 0 && saveWait) {
FlexGlobals.topLevelApplication.close();
}
doSaveQueue();
}
}

private function saveFile(text:String, location:String, updateIndexNeeded:Boolean = true):void {
var file:File = new File(location);
var stream:FileStream = new FileStream();
stream.open(file, FileMode.WRITE);
var str:String = text;
//str = str.replace(/\n/g, File.lineEnding);
stream.writeMultiByte(str, currentEncoding);
stream.close();
if (closeAfterConfirm && tabsToClose == 0 && saveWait) {
FlexGlobals.topLevelApplication.close();
}
saveWait = false;
if (updateIndexNeeded) {
refreshData();
}
doSaveQueue();
changeTitle();
 }
 
private function updateDirectoryPath():void{
directoryLabel.text = fileList.directory.nativePath;
}

private function fileListLoad():void{
var file:File = new File(fileList.selectedPath);
loadFile(file);
}

private function onOpen(evt:SQLEvent):void {
// create snippets table
var stat:SQLStatement = new SQLStatement();
stat.sqlConnection = connection;
//stat.text = "DELETE FROM snippets";
stat.text = "CREATE TABLE IF NOT EXISTS snippets (id INTEGER PRIMARY KEY AUTOINCREMENT, snippetName TEXT, snippetText TEXT, categoryID INTEGER, snippetPosition INTEGER)";
stat.execute( -1, new Responder(onCreateSnippets));
}

private function onCreateSnippets(evt:SQLResult):void {
// create category table
var stat:SQLStatement = new SQLStatement();
stat.sqlConnection = connection2;
//stat.text = "DELETE FROM categories";
stat.text = "CREATE TABLE IF NOT EXISTS categories (id INTEGER PRIMARY KEY AUTOINCREMENT, categoryName TEXT, categoryPosition INTEGER)";
stat.execute( -1, new Responder(onCreateCategory));
}

private function onCreateCategory(evt:SQLResult):void {
// select snippets
var stat:SQLStatement = new SQLStatement();
stat.sqlConnection = connection;
stat.text = "SELECT id, snippetName, categoryID, snippetPosition FROM snippets ORDER BY id";
stat.execute( -1, new Responder(onSelectedSnippets));
}

private function onSelectedSnippets(evt:SQLResult):void {
// save selected snippets to a variable
snippetData = evt.data;

// select categories
var stat:SQLStatement = new SQLStatement();
stat.sqlConnection = connection2;
stat.text = "SELECT id, categoryName, categoryPosition FROM categories ORDER BY id";
stat.execute( -1, new Responder(onSelectedCategories));
}

private function onSelectedCategories(evt:SQLResult):void {
// save selected categories to a variable
categoryData = evt.data;

// call function to start creating the XML
createSnippetXML();
}

private function createSnippetXML():void {
snippetXML = new XMLList();

// add root tags if there are any items in any database
if (snippetData || categoryData) {
snippetXML = new XMLList(<root></root>);
}

// Create variable to store snippets which will be added in a batch
var prepareSnippets:Array = [];

// loop through categories to add them and their content
if (categoryData) {
// Sort categories
categoryData.sortOn("categoryPosition", Array.NUMERIC);
for (var i:int = 0; i < categoryData.length; i++) {
prepareSnippets = [];
var aCategory:XML = <category/>
aCategory.@id = categoryData[i].id;
aCategory.@label = symbolEncode(categoryData[i].categoryName);
aCategory.@categoryPosition = categoryData[i].categoryPosition;
aCategory.@isBranch = true;
snippetXML[0].appendChild(aCategory);
if(snippetData){
for (var a:int = snippetData.length-1; a >= 0; a--) {
if (snippetData[a].categoryID == categoryData[i].id) {
prepareSnippets.push(snippetData[a]);
snippetData.splice(a, 1);
}
}
}

// sort and add snippets to this category
prepareSnippets.sortOn("snippetPosition", Array.NUMERIC);
for (var u:int = 0; u < prepareSnippets.length; u++) {
var aSnippet:XML = <snippet/>;
aSnippet.@id = prepareSnippets[u].id;
aSnippet.@label = symbolEncode(prepareSnippets[u].snippetName);
aSnippet.@categoryID = prepareSnippets[u].categoryID;
aSnippet.@snippetPosition = prepareSnippets[u].snippetPosition;
aSnippet.@isBranch = false;
aCategory.appendChild(aSnippet);
}

}}
// look for snippets located in root tags (not in a category)
if(snippetData){
snippetData.sortOn("snippetPosition", Array.NUMERIC);
for (var t:int = 0; t < snippetData.length; t++) {
var aRootSnippet:XML = <snippet/>;
aRootSnippet.@id = snippetData[t].id;
aRootSnippet.@label = symbolEncode(snippetData[t].snippetName);
aRootSnippet.@categoryID = snippetData[t].categoryID;
aRootSnippet.@snippetPosition = snippetData[t].snippetPosition;
aRootSnippet.@isBranch = false;
snippetXML[0].appendChild(aRootSnippet);
}
}

}

private function snippetTreeChange(evt:Event):void {
if (evt.currentTarget.selectedItem.@isBranch == false) {
var stat:SQLStatement = new SQLStatement();
stat.sqlConnection = connection;
stat.text = "SELECT snippetText FROM snippets WHERE id=" + evt.currentTarget.selectedItem.@id;
stat.execute( -1, new Responder(insertSnippet));
evt.currentTarget.selectedIndex = -1;
}
}

private function insertSnippet(evt:SQLResult):void {
insertText(evt.data[0].snippetText);
}

private function doSnippet(createNew:Boolean = false, newText:String = ""):void{
snippetWindow.open();
snippetWindow.activate();
snippetWindow.visible = true;
snippetWindow.setValues(snippetXML, connection, connection2, createNew, newText);
}

private function symbolEncode(str:String):String {
str = str.replace(/&/g, '&amp;');
str = str.replace(/"/g, '&quot;');
str = str.replace(/'/g, '&apos;');
str = str.replace(/\</g, '&lt;');
str = str.replace(/\>/g, '&gt;');
return str;
}

private function symbolDecode(str:String):String{
str = str.replace(/&quot;/g, '"');
str = str.replace(/&apos;/g, "'");
str = str.replace(/&lt;/g, '<');
str = str.replace(/&gt;/g, '>');
str = str.replace(/&amp;/g, '&');
return str;
}

private function labelDecode(obj:XML):String{
return symbolDecode(obj.@label);
}

private function doFind():void {
pref_sidepane = true
sidePaneButtons.selectedIndex = 3;
savePreferences();
updateTextSize();
countLines();
}

private function changePanelTab():void {
if (sidePaneButtons.selectedIndex == 3) {
focusManager.setFocus(searchInput);
}else {
focusManager.setFocus(textArea);
resetSearch();
}
updateSearch();
}

private function updateSearch():void {
var allFormat:TextLayoutFormat = new TextLayoutFormat();
allFormat.color = pref_fontsettings.fontcolor;
textArea.setFormatOfRange(allFormat, 0, textArea.text.length);
if (searchInput != null) {
searchResults = [];
if (searchInput.text != "") {
var lastIndex:int = 0;
var selectFormat:TextLayoutFormat = new TextLayoutFormat();
selectFormat.color = 0xff0000;

var tempText:String = textArea.text;
var tempInput:String = searchInput.text;
if (!checkCase.selected) {
tempText = textArea.text.toLowerCase();
tempInput = searchInput.text.toLowerCase();
}
while (tempText.indexOf(tempInput, lastIndex) >= 0) {
var thisIndex:int = tempText.indexOf(tempInput, lastIndex);
searchResults.push(thisIndex);
lastIndex = thisIndex + 1;
if(checkHighlight.selected){
textArea.setFormatOfRange(selectFormat, thisIndex, thisIndex + searchInput.text.length);
}
}
moveResults(0);
resultText.text = "Matches found: " + searchResults.length;
}else{
resultText.text = "";
}
}
}

private function replaceSearch():void {
if (searchResults.length > 0) {
var flags:String = "g";
if (!checkCase.selected) {
flags += "i";
}
var pattern:RegExp = new RegExp(searchInput.text, flags);
var resultText:String = textArea.text.replace(pattern, replaceInput.text);
changeTextTo(resultText);
resetSearch();
}
}

private function resetSearch():void {
if(searchInput!=null){
searchInput.text = "";
updateSearch();
}
}

private function moveResults(ind:int):void {
if (searchResults.length > 0) {
focusManager.setFocus(textArea);
textArea.selectRange(searchResults[ind], searchResults[ind] + searchInput.text.length);
textArea.scrollToRange(searchResults[ind], searchResults[ind] + searchInput.text.length);
selectedResult = ind;
}
}

private function resultsUp():void{
if (searchResults.length-1 > selectedResult) {
moveResults(selectedResult + 1);
}else
if (searchResults.length-1 == selectedResult) {
moveResults(0);
}
}

private function resultsDown():void{
if (selectedResult > 0) {
moveResults(selectedResult - 1);
}else
if (selectedResult == 0) {
moveResults(searchResults.length-1);
}
}

private function addRecent(obj:Object):void {
for (var i:int = 0; i < pref_recent.length; i++) {
// remove if location is the same
if (pref_recent[i].location == obj.location) {
pref_recent.removeItemAt(i);
break;
}
}
pref_recent.addItemAt( { label:obj.title, location:obj.location }, 0);
if (pref_recent.length > 20) {
pref_recent.removeItemAt(pref_recent.length-1);
}
savePreferences();
}

private function selectRecent():void {
var location:String = pref_recent[recentList.selectedIndex].location;
if (new File(location).exists) {
loadFile(new File(location));
}else {
Alert.show("File not found at specified location.","Oops!");
}
}

private function doEncode(newEncoding:String, index:Number):void{
currentEncoding = newEncoding;
for (var i:int = 0; i < enc.length; i++) {
enc.setItemAt(false, i);
}
enc.setItemAt(true, index);
}

private function changeTitle():void {
// refresh tabs
refreshData();
// refresh title
var savedSymbol:String = (tabData[tabSelectedIndex].saved)?(""):("*");
title = "Kirpad - " + tabData[tabSelectedIndex].title + savedSymbol;
}

private function openRecent():void{
pref_sidepane = true;
sidePaneButtons.selectedIndex = 4;
}

private function tabContextRename(evt:ContextMenuEvent):void {
tabSelectedIndex = rightclickTabIndex;
tabChange();
openRename();
}

private function openRename():void{
PopUpManager.addPopUp(renameWindow, this, true);
PopUpManager.centerPopUp(renameWindow);
renameWindow.title = "Rename " + tabData[tabSelectedIndex].title;
renameInput.text = tabData[tabSelectedIndex].title;
focusManager.setFocus(renameInput);
}

private function closeRename():void{
PopUpManager.removePopUp(renameWindow);
}

private function doRename():void {
var location:String = tabData[tabSelectedIndex].location;
var titleOld:String = tabData[tabSelectedIndex].title;
var titleNew:String = renameInput.text;
var locationNew:String = location.substring(0, location.length - titleOld.length) + titleNew;
var validName:RegExp = /^(?!^(PRN|AUX|CLOCK\$|NUL|CON|COM\d|LPT\d|\..*)(\..+)?$)[^\x00-\x1f\\?*:\";|\/]+$/;

if (validName.test(titleNew)) {

// remove existing file if it exists
if (new File(location).exists) {
new File(location).deleteFile();
}

// Update properties and
// see if user entered extension for the file (for example .txt)
// If not, add .txt by default
// Then create the new file
var extReg:RegExp = /\.([a-z0-9]{2,})/i;
if (extReg.test(titleNew)) {
tabData[tabSelectedIndex].location = locationNew;
tabData[tabSelectedIndex].title = titleNew;
tabData[tabSelectedIndex].saved = true;
saveFile(tabData[tabSelectedIndex].textData, locationNew, true);
}else {
tabData[tabSelectedIndex].location = locationNew + ".txt";
tabData[tabSelectedIndex].title = titleNew + ".txt";
tabData[tabSelectedIndex].saved = true;
saveFile(tabData[tabSelectedIndex].textData, locationNew + ".txt", true);
}

statusMessage = "[ " + new Date().toLocaleTimeString() + " ] " + titleNew + " renamed";
updateStatus();
}else {
Alert.show("New file name is blank or contains restricted characters. File was no renamed.", "Error");
}
}

private function tabContextDelete(evt:ContextMenuEvent):void {
tabSelectedIndex = rightclickTabIndex;
tabChange();
doDelete();
}

private function doDelete():void{
Alert.show("Delete " + tabData[tabSelectedIndex].location + " from computer?", "Confirmation", Alert.YES | Alert.NO, null, confirmDelete);

function confirmDelete(evt:CloseEvent):void {
if (evt.detail == Alert.YES) {
var file:File = new File(tabData[tabSelectedIndex].location);
if (file.exists) {
file.deleteFile();
closeTab(tabSelectedIndex);
statusMessage = "[ " + new Date().toLocaleTimeString() + " ] " + file.name + " deleted";
updateStatus();
}else {
Alert.show("File not found at specified location!","Oops!");
}
}
}
}

private function tabContextReload(evt:ContextMenuEvent):void {
tabSelectedIndex = rightclickTabIndex;
tabChange();
doReload();
}

private function doReload():void{
var file:File = new File(tabData[tabSelectedIndex].location);
if (file.exists) {
var stream:FileStream = new FileStream();
stream.open(file, FileMode.READ);
var str:String = stream.readMultiByte(stream.bytesAvailable, currentEncoding);
stream.close();
str = str.replace(File.lineEnding, "\n");
tabData[tabSelectedIndex].textData = str;
tabData[tabSelectedIndex].saved = true;
//textArea.text = str;
changeTextTo(tabData[tabSelectedIndex].textData);
//tabChange();
statusMessage = "[ " + new Date().toLocaleTimeString() + " ] " + file.name + " reloaded";
updateStatus();
}else {
Alert.show("File not found at specified location!","Oops!");
}
}

private function doInsertFile():void{
var file:File = new File();
file.browseForOpen("Open document", [new FileFilter("Text documents", "*.txt"), new FileFilter("All files", "*")]);
file.addEventListener(Event.SELECT, fileLoad);

function fileLoad(evt:Event):void {
var stream:FileStream = new FileStream();
stream.open(file, FileMode.READ);
var str:String = stream.readMultiByte(stream.bytesAvailable, currentEncoding);
stream.close();
str = str.replace(File.lineEnding, "\n");
insertText(str);
}
}

private function doFileDetails():void {
var currentFile:File = new File(tabData[tabSelectedIndex].location);
var str:String = "";
str += "File: " + currentFile.nativePath.toString() + "\n";
str += "Created: " + currentFile.creationDate.toLocaleString() + "\n";
str += "Modified: " + currentFile.modificationDate.toLocaleString() + "\n";
str += "Size: " + currentFile.size + " bytes";
insertText(str);
}

private function doTimestamp():void{
insertText(new Date().toLocaleString());
}
]]>
</fx:Script>

<fx:Declarations>
<s:TitleWindow id="renameWindow" width="300" height="120" close="closeRename();" title="Rename file">
<s:VGroup x="10" y="10" width="300" height="350">
<s:Label width="280" text="Rename to:"/>
<s:TextInput width="280" id="renameInput" maxChars="255" />
<s:HGroup>
<s:Button label="OK" click="doRename(); closeRename();" />
<s:Button label="Cancel" click="closeRename();" />
</s:HGroup>
</s:VGroup>
</s:TitleWindow>
<fx:XML id="windowMenu">
<root>
<menuitem label="File">
<menuitem label="New" key="n" controlKey="true" />
<menuitem label="Open" key="o" controlKey="true" />
<menuitem label="Recent">
</menuitem>
<menuitem type="separator"/>
<menuitem label="Rename..." enabled="{hasLocation}" />
<menuitem label="Delete file" enabled="{hasLocation}" />
<menuitem label="Reload file" enabled="{hasLocation}" />
<menuitem type="separator"/>
<menuitem label="Save" key="s" controlKey="true" />
<menuitem label="Save As" key="s" controlKey="true" shiftKey="true" />
<menuitem label="Save All" key="s" controlKey="true" altKey="true" />
<menuitem type="separator"/>
<menuitem label="Print" key="p" controlKey="true" />
</menuitem>
<menuitem label="Edit">
<menuitem label="Undo" key="z" controlKey="true" enabled="{canUndo}" />
<menuitem label="Redo" key="y" controlKey="true" enabled="{canRedo}" />
<menuitem type="separator"/>
<menuitem label="Cut" key="x" controlKey="true" enabled="{textArea.selectionActivePosition!=textArea.selectionAnchorPosition}" />
<menuitem label="Copy" key="c" controlKey="true" enabled="{textArea.selectionActivePosition!=textArea.selectionAnchorPosition}" />
<menuitem label="Paste" key="v" controlKey="true" enabled="{canPaste}" />
<menuitem type="separator"/>
<menuitem label="Select all" key="a" controlKey="true" />
<menuitem type="separator"/>
<menuitem label="Find/Replace..." key="f" controlKey="true" />
</menuitem>
<menuitem label="Insert">
<menuitem label="From file..." />
<menuitem label="File details" enabled="{hasLocation}"/>
<menuitem label="Timestamp" />
</menuitem>
<menuitem label="Settings">
<menuitem label="Word wrap" type="check" toggled="{pref_wrap}" />
<menuitem label="Font..."/>
</menuitem>
<menuitem label="View">
<menuitem label="Tool bar" type="check" toggled="{pref_toolbar}" />
<menuitem label="Status bar" type="check" toggled="{pref_status}" />
<menuitem label="Line count" type="check" toggled="{pref_linecount}" />
<menuitem label="Side pane" type="check" toggled="{pref_sidepane}" />
</menuitem>
<menuitem label="Encoding">
<menuitem label="UTF-8" type="check" toggled="{enc.getItemAt(0)}" ind="0" encoding="utf-8" />
<menuitem label="Unicode" type="check" toggled="{enc.getItemAt(1)}" ind="1" encoding="unicode" />
<menuitem label="ASCII" type="check" toggled="{enc.getItemAt(2)}" ind="2" encoding="us-ascii" />
</menuitem>
</root>
</fx:XML>
<mx:ArrayCollection id="tabData">
<fx:Object title="Untitled" textData="" saved="false" seletedActive="0" selectedAnchor="0" location="" />
</mx:ArrayCollection>
<mx:ArrayCollection id="sidePaneData">
<fx:Object icon="@Embed('../lib/page.png')" tip="Tab management" />
<fx:Object icon="@Embed('../lib/folder_magnify.png')" tip="File browsing" />
<fx:Object icon="@Embed('../lib/book.png')" tip="Snippets" />
<fx:Object icon="@Embed('../lib/find.png')" tip="Search and replace" />
<fx:Object icon="@Embed('../lib/folder_page_white.png')" tip="Recent files" />
</mx:ArrayCollection>
<mx:ArrayCollection id="sidePaneTabHeadings">
<fx:String>Tab management</fx:String>
<fx:String>File browsing</fx:String>
<fx:String>Snippets</fx:String>
<fx:String>Search and replace</fx:String>
<fx:String>Recent files:</fx:String>
</mx:ArrayCollection>
</fx:Declarations>

<s:Group width="100%" height="100%">
<s:TextArea id="textArea" width="{textWidth}" height="{textHeight}" y="{textY}" x="{textX}" lineBreak="{(pref_wrap)?('toFit'):('explicit')}"  click="cursorFix(); updateStatus();" change="updateStatus(); countLines(); textChange(); saveUpdate(); resetSearch();" keyDown="updateStatus();" borderVisible="false" focusThickness="0" />
<s:Scroller horizontalScrollPolicy="auto" verticalScrollPolicy="off" width="{tabWidth}" y="{tabY}">
<s:Group>
<custom:CustomTabBar id="tabBar" dataProvider="{tabData}" itemRenderer="CustomTab" height="22" tabClose="onTabClose(event);" change="tabChange('tabbar');" selectedIndex="{tabSelectedIndex}" labelField="saved">
<custom:layout>
<s:HorizontalLayout gap="-1" columnWidth="170" variableColumnWidth="false"/>
</custom:layout>
</custom:CustomTabBar>
</s:Group>
</s:Scroller>
<s:TextArea id="lineCount" width="{lineCountWidth}" text="{lineNumbers}" visible="{pref_linecount}" height="{textHeight}" y="{textY}" editable="false" selectable="false" mouseEnabled="false" textAlign="right" verticalScrollPolicy="off" horizontalScrollPolicy="off" />
<mx:HBox id="toolBar" width="100%" backgroundColor="#dddddd" height="30" visible="{pref_toolbar}" paddingTop="2" paddingLeft="3">
<custom:IconButton icon="@Embed('../lib/page.png')" toolTip="New document" click="doNew();" />
<custom:IconButton icon="@Embed('../lib/folder_page.png')" toolTip="Open" click="doOpen();" />
<custom:IconButton icon="@Embed('../lib/disk.png')" toolTip="Save" click="doSave(tabSelectedIndex);" />
<custom:IconButton icon="@Embed('../lib/disk_multiple.png')" toolTip="Save all" click="doSaveAll();" />
<custom:IconButton icon="@Embed('../lib/printer.png')" toolTip="Print" click="doPrint();" />
<custom:IconButton icon="@Embed('../lib/find.png')" toolTip="Find/replace" click="doFind();" />
<s:Label text="|" fontSize="18" color="#bbbbbb" paddingTop="4" />
<custom:IconButton icon="@Embed('../lib/arrow_undo.png')" toolTip="Undo" enabled="{canUndo}" click="doUndo();" />
<custom:IconButton icon="@Embed('../lib/arrow_redo.png')" toolTip="Redo" enabled="{canRedo}" click="doRedo();" />
<s:Label text="|" fontSize="18" color="#bbbbbb" paddingTop="4" />
<custom:IconButton icon="@Embed('../lib/cut.png')" toolTip="Cut" click="doCut();" enabled="{textArea.selectionActivePosition!=textArea.selectionAnchorPosition}" />
<custom:IconButton icon="@Embed('../lib/page_white_copy.png')" toolTip="Copy" click="doCopy();" enabled="{textArea.selectionActivePosition!=textArea.selectionAnchorPosition}" />
<custom:IconButton icon="@Embed('../lib/paste_plain.png')" toolTip="Paste" click="doPaste();" enabled="{canPaste}" />
</mx:HBox>
<mx:Box id="sidePane" width="{sidePaneWidth}" y="{sidePaneY}" x="{sidePaneX}" height="{sidePaneHeight}" backgroundColor="#dddddd" visible="{pref_sidepane}" paddingTop="5" paddingLeft="5" horizontalScrollPolicy="off">
<s:Group>
<s:Label text="{sidePaneTabHeadings.getItemAt(sidePaneButtons.selectedIndex)}" width="{sidePaneWidth}" top="1" />
<custom:IconButton icon="@Embed('../lib/bullet_go.png')" toolTip="Hide side pane" click="closeSidePane();" top="-4" right="12"/>
</s:Group>
<mx:ToggleButtonBar id="sidePaneButtons" dataProvider="{sidePaneData}" iconField="icon" width="{sidePaneWidth-10}" toolTipField="tip" />
<mx:ViewStack id="sidePaneStack" height="100%" selectedIndex="{sidePaneButtons.selectedIndex}" change="changePanelTab();" >
<s:NavigatorContent id="tabs">
<custom:CustomList id="sideList" dataProvider="{tabData}" width="{sideContentWidth}" height="100%" itemRenderer="CustomListItem" selectedIndex="{tabSelectedIndex}" change="tabChange('sidelist');" tabClose="onListClose(event);" />
</s:NavigatorContent>
<s:NavigatorContent id="files">
<s:VGroup height="100%">
<s:HGroup width="100%">
<custom:IconButton icon="@Embed('../lib/arrow_up.png')" toolTip="Up" click="fileList.navigateUp();" enabled="{fileList.canNavigateUp}"/>
<s:Label width="140" id="directoryLabel" paddingTop="6" />
</s:HGroup>
<mx:FileSystemList width="{sidePaneWidth-10}" height="100%" id="fileList" directory="{File.desktopDirectory}" directoryChange="updateDirectoryPath();" creationComplete="updateDirectoryPath();" fileChoose="fileListLoad();" />
</s:VGroup>
</s:NavigatorContent>
<s:NavigatorContent id="snippets">
<s:VGroup height="100%" width="100%">
<mx:Tree height="100%" width="100%" id="snippetTree" showRoot="false" labelFunction="labelDecode" dataProvider="{snippetXML}" change="snippetTreeChange(event);" />
<s:Button width="100%" label="New snippet" click="doSnippet(true, textArea.text.substring(textArea.selectionActivePosition, textArea.selectionAnchorPosition));" />
<s:Button width="100%" label="Manage snippets" click="doSnippet();" />
</s:VGroup>
</s:NavigatorContent>
<s:NavigatorContent id="search">
<s:VGroup height="100%" width="100%">
<s:Label text="Find:"/>
<s:TextInput id="searchInput" width="100%" enter="updateSearch();" />
<s:Button id="searchButton" label="Search"  width="100%" click="updateSearch();" />
<s:Label id="resultText" />
<s:HGroup>
<s:Button id="findPrevious" label="Previous"  width="50%" click="resultsDown();" />
<s:Button id="findNext" label="Next"  width="50%" click="resultsUp();" />
</s:HGroup>
<s:CheckBox label="Match case" id="checkCase" change="updateSearch()" />
<s:CheckBox label="Highlight all" id="checkHighlight" change="updateSearch()" />
<s:Label text=""/>
<s:Label text="Replace with:"/>
<s:TextInput id="replaceInput" width="100%" enter="replaceSearch()" />
<s:Button id="replaceButton" label="Replace all"  width="100%" click="replaceSearch()" />
</s:VGroup>
</s:NavigatorContent>
<s:NavigatorContent id="recent">
<s:VGroup height="100%" width="100%">
<s:Label text="Recently closed files:"/>
<s:List id="recentList" width="{sideContentWidth}" height="100%" dataProvider="{pref_recent}" labelField="label" change="selectRecent();" />
</s:VGroup>
</s:NavigatorContent>
</mx:ViewStack>
</mx:Box>
</s:Group>
<s:TextArea id="tempText" borderVisible="false" visible="false"/>

</s:WindowedApplication>

Thanks for reading!

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