Friday, November 18, 2011

Creating a Flex AIR text editor: Part 39

In this tutorial we will fix some problems that are remaining with the saving functionality.

At the current moment, if we close the main application, a lot of unexpected problems might occur with saving already existing documents, for example, if the last remaining tab needs to be saved, it closes before the user has time to actually save the file.

First let's declare a new boolean variable called saveWait, set it false by default:

private var saveWait:Boolean = false;

This variable is needed to later see what should happen after a file has been successfully saved - should the main application close or should it not.

Update the closeTab() function by moving the removeTab() function ahead of doSave() in the confirmClose() sub function and passing a 'true' value as the second parameter of the removeTab function:

private function closeTab(index:int):void {
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);
}
}
}

Add this second parameter to the removeTab() function, call it waitForSave and make it optional, with a false value by default. Turn the first part of the function (up to the conditional which closes the application) into a new conditional, which executes the code inside of it if closeAfterConfirm is false. This is needed to prevent some misbehaviour that might occur if the file needs to be closed but a new tab is added automatically.

Then in the conditional that closes the application, add additional condition, which checks if the waitForSave boolean is false.

After that add another conditional, which sets saveWait to true if waitForSave is true as well.

private function removeTab(index:int, waitForSave:Boolean = false):void {
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();
tabData.removeItemAt(index);
tabSelectedIndex = tabBar.selectedIndex;
previousIndex = tabSelectedIndex;
textArea.text = tabData[tabSelectedIndex].textData;
textArea.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();
}

Now, if we are 'Saving As', the saveWait boolean is set to true.

Go to the saveFile function. Add a conditional, which checks if closeAfterConfirm is true, tabsToClose equals 0 and saveWait is true and closes the main application if all the conditions are met. Outside the conditional, add a line that sets saveWait to false.

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.writeUTFBytes(str);
stream.close();
if (closeAfterConfirm && tabsToClose == 0 && saveWait) {
FlexGlobals.topLevelApplication.close();
}
saveWait = false;
if (updateIndexNeeded) {
refreshData();
}
 }

The code checks if we're closing the application and if this is the last tab that needs to be closed and if the user used 'Save As'. If all of this is true, then the application is closed after the file has finished saving.

Now if the application is being closed and last tabs are being checked for save confirmation, nothing closes before the user has time to actually save the documents.

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.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 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;

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();

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;

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();

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

private var saveWait: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;

// 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.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;

// 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:ContextMenu = new ContextMenu();
cm.items = [cm_close, cm_closeother];
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;
}

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 == "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);
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.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;
}
}

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 = 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) {
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);
}

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].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(!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();
tabData.removeItemAt(index);
tabSelectedIndex = tabBar.selectedIndex;
previousIndex = tabSelectedIndex;
textArea.text = tabData[tabSelectedIndex].textData;
textArea.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;
tabChange();
updateTextSize();
}

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

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

private function tabContextCloseOther(evt:ContextMenuEvent):void {
var len:int = tabData.length;
for (var i:int = 0; i < len; i++) {
if (i != rightclickTabIndex) {
closeTab(i);
}
}
}

private function tabRightClick(evt:MouseEvent):void {
var tabWidth:Number = tabBar.width / tabData.length;
var rcIndex:int = Math.floor(tabBar.mouseX / tabWidth);
rightclickTabIndex = rcIndex;
}

private function listRightClick(evt:MouseEvent):void {
var tabHeight:Number = 20;
var rcIndex:int = Math.floor((sideList.mouseY + sideList.scroller.verticalScrollBar.value) / tabHeight);
rightclickTabIndex = rcIndex;
}

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{
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{
canUndo = undoManager.canUndo();
canRedo = undoManager.canRedo();
focusManager.setFocus(textArea);
}

private function doUndo():void {
undoManager.undo();
textChange();
}

private function doRedo():void {
undoManager.redo();
textChange();
}

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 {
var stream:FileStream = new FileStream();
stream.open(file, FileMode.READ);
var str:String = stream.readUTFBytes(stream.bytesAvailable);
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} );
tabSelectedIndex = tabData.length - 1;
tabChange();
updateTextSize();
}
}

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;
}
}

private function doSave(ind:int, updateIndexNeeded:Boolean = true):void {
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 refreshData():void {
tabBar.dataProvider = new ArrayCollection([]);
tabBar.dataProvider = tabData;
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 file");
file.addEventListener(Event.SELECT, fileSave);

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)) {
saveFile(text, file.nativePath, updateIndexNeeded);
tabData[ind].location = file.nativePath;
tabData[ind].title = file.name;
tabData[ind].saved = true;
}else{
saveFile(text, file.nativePath + ".txt", updateIndexNeeded);
tabData[ind].location = file.nativePath + ".txt";
tabData[ind].title = file.name + ".txt";
tabData[ind].saved = true;
}
}else{
Alert.show("You need to enter a name for your file.", "Error");
}
}
}

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.writeUTFBytes(str);
stream.close();
if (closeAfterConfirm && tabsToClose == 0 && saveWait) {
FlexGlobals.topLevelApplication.close();
}
saveWait = false;
if (updateIndexNeeded) {
refreshData();
}
 }
]]>
</fx:Script>

<fx:Declarations>
<fx:XML id="windowMenu">
<root>
<menuitem label="File">
<menuitem label="New" key="n" controlKey="true" />
<menuitem label="Open" key="o" controlKey="true" />
<menuitem label="Save" key="s" controlKey="true" />
<menuitem label="Save As" key="s" controlKey="true" shiftKey="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" />
<menuitem label="Copy" key="c" controlKey="true" />
<menuitem label="Paste" key="v" controlKey="true" />
<menuitem type="separator"/>
<menuitem label="Select all" key="a" controlKey="true" />
</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>
</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" />
</mx:ArrayCollection>
<mx:ArrayCollection id="sidePaneTabHeadings">
<fx:String>Tab management</fx:String>
<fx:String>File browsing</fx:String>
<fx:String>Snippets</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();" 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" />
<custom:IconButton icon="@Embed('../lib/printer.png')" toolTip="Print" click="doPrint();" />
<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();" />
<custom:IconButton icon="@Embed('../lib/page_white_copy.png')" toolTip="Copy" click="doCopy();" />
<custom:IconButton icon="@Embed('../lib/paste_plain.png')" toolTip="Paste" click="doPaste();" />
</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}" />
<mx:Image source="@Embed('../lib/bullet_go.png')" top="-4" right="15" click="closeSidePane();" useHandCursor="true" buttonMode="true"/>
</s:Group>
<mx:ToggleButtonBar id="sidePaneButtons" dataProvider="{sidePaneData}" iconField="icon" width="{sidePaneWidth-10}" toolTipField="tip" />
<mx:ViewStack id="sidePaneStack" height="100%" selectedIndex="{sidePaneButtons.selectedIndex}">
<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">
<mx:FileSystemTree height="100%" width="100%" />
</s:NavigatorContent>
<s:NavigatorContent id="snippets">
<s:VGroup height="100%" width="100%">
<mx:Tree height="100%" width="100%" />
<s:Button width="100%" label="New snippet" />
<s:Button width="100%" label="Manage snippets" />
</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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