Index: lams_common/src/flash/org/lamsfoundation/lams/common/PreferencesDialog.as
===================================================================
diff -u
--- lams_common/src/flash/org/lamsfoundation/lams/common/PreferencesDialog.as	(revision 0)
+++ lams_common/src/flash/org/lamsfoundation/lams/common/PreferencesDialog.as	(revision be5225130a3e8822d923e0a3fa3594dbbe4dcfa8)
@@ -0,0 +1,300 @@
+import mx.controls.*
+import mx.utils.*
+import mx.managers.*
+import mx.events.*
+
+import org.lamsfoundation.lams.common.ws.*
+import org.lamsfoundation.lams.common.util.*
+import org.lamsfoundation.lams.common.dict.*
+import org.lamsfoundation.lams.common.style.*
+import org.lamsfoundation.lams.common.*
+import org.lamsfoundation.lams.authoring.*
+
+/*
+* Preferences Dialog window for editing user preferences
+* @author  DI
+*/
+class PreferencesDialog extends MovieClip implements Dialog{
+
+    //References to components + clips 
+    private var _container:MovieClip;  //The container window that holds the dialog
+    private var cfg:Config;            //local config reference
+    
+    private var ok_btn:Button;         //OK+Cancel buttons
+    private var cancel_btn:Button;
+    
+    private var panel:MovieClip;       //The underlaying panel base
+    
+    private var lang_cb:ComboBox;    //Theme + language labels
+    private var theme_cb:ComboBox;    
+    
+    private var lang_lbl:Label;        //Theme + language labels
+    private var theme_lbl:Label;
+    
+    
+    private var fm:FocusManager;            //Reference to focus manager
+    private var themeManager:ThemeManager;  //Theme manager
+    
+    private var currentLanguage:String;     //Language and theme settings for current and new 
+    private var newLanguage:String;
+
+    private var currentTheme:String;
+    private var newTheme:String;
+    
+    //Dimensions for resizing
+    private var xOkOffset:Number;
+    private var yOkOffset:Number;
+    private var xCancelOffset:Number;
+    private var yCancelOffset:Number;
+
+    //These are defined so that the compiler can 'see' the events that are added at runtime by EventDispatcher
+    private var dispatchEvent:Function;     
+    public var addEventListener:Function;
+    public var removeEventListener:Function;
+    
+    
+    /**
+    * constructor
+    */
+    function PreferencesDialog(){
+        //Set up this class to use the Flash event delegation model
+        EventDispatcher.initialize(this);
+
+        //set up local confi reference
+        cfg = Config.getInstance();
+        
+        //Create a clip that will wait a frame before dispatching init to give components time to setup
+        this.onEnterFrame = init;
+    }
+
+    /**
+    * Called a frame after movie attached to allow components to initialise
+    */
+    private function init():Void{
+        //Delete the enterframe dispatcher
+        delete this.onEnterFrame;
+        
+        //Store current language for rollback if needed
+        currentLanguage = newLanguage = String(cfg.getItem('language'));
+        currentTheme = newTheme = String(cfg.getItem('theme'));
+        
+        //set the reference to the StyleManager
+        themeManager = ThemeManager.getInstance();
+        
+        //Set the text for buttons
+        ok_btn.label = Dictionary.getValue(5);
+        cancel_btn.label = Dictionary.getValue(6);
+        
+        //Set the labels
+        lang_lbl.text = Dictionary.getValue(7);
+        theme_lbl.text = Dictionary.getValue(8);
+        
+        //get focus manager + set focus to OK button, focus manager is available to all components through getFocusManager
+        fm = _container.getFocusManager();
+        fm.enabled = true;
+        
+        //EVENTS
+        //Add event listeners for ok, cancel and close buttons
+        ok_btn.addEventListener('click',Delegate.create(this, ok));
+        cancel_btn.addEventListener('click',Delegate.create(this, cancel));
+        //Assign Click (close button) and resize handlers
+        _container.addEventListener('click',this);
+        _container.addEventListener('size',this);
+        
+        //work out offsets from bottom RHS of panel
+        xOkOffset = panel._width - ok_btn._x;
+        yOkOffset = panel._height - ok_btn._y;
+        xCancelOffset = panel._width - cancel_btn._x;
+        yCancelOffset = panel._height - cancel_btn._y;
+        
+        //Register as listener with StyleManager and set Styles
+        themeManager.addEventListener('themeChanged',this);
+        setStyles();
+        
+        //Populate themes and languages combo
+        //Languages is an array containing objects with label and data properties
+        var languages = cfg.getItem('languages');
+        lang_cb.dataProvider = languages;
+        //Select current language
+        var language = cfg.getItem('language');
+        //Go through all options to find current language index and select it in combo
+        for(var i=0;i<lang_cb.length;i++){
+            if(lang_cb.getItemAt(i).data == language){
+                lang_cb.selectedIndex = i;
+                break;
+            }
+        }
+        //Set up event handler
+        lang_cb.addEventListener('change',Delegate.create(this,languageSelectionChanged));
+        
+        //THEMES
+        var themes = cfg.getItem('themes');
+        theme_cb.dataProvider = themes;
+        //Select current theme
+        var theme = cfg.getItem('theme');
+        //Go through all options to find current language index and select it in combo
+        for(var i=0;i<theme_cb.length;i++){
+            if(theme_cb.getItemAt(i).data == theme){
+                theme_cb.selectedIndex = i;
+                break;
+            }
+        }
+        //Set up event handler
+        theme_cb.addEventListener('change',Delegate.create(this,themeSelectionChanged));
+    }
+    
+    
+    /**
+    * Event fired when theme combo box has been used to change the theme selection
+    * @param evt:Object containing type and source as per Flash event delegation model
+    */
+    private function themeSelectionChanged(evt:Object) {
+        //Verify event type
+        if(evt.type == 'change'){
+            trace("Value changed to " + evt.target.value);
+            //Store selected language
+            newTheme = evt.target.value;
+        } else {
+            Debugger.log('wrong event type for event :',Debugger.CRITICAL,'themeSelectionChanged','org.lamsfoundation.lams.PreferencesDialog');
+        }
+    }
+    
+    
+    /**
+    * Event fired when language combo box has been used to change the language selection
+    * evt Object containing type and source as per Flash event delegation model
+    */
+    private function languageSelectionChanged(evt:Object) {
+        //Verify event type
+        if(evt.type == 'change'){
+            trace("Value changed to " + evt.target.value);
+            //Store selected language
+            newLanguage = evt.target.value;
+        } else {
+            Debugger.log('wrong event type for event :',Debugger.CRITICAL,'languageChanged','org.lamsfoundation.lams.PreferencesDialog');
+        }
+    }
+    
+    /**
+    * Event fired by StyleManager class to notify listeners that Theme has changed
+    * it is up to listeners to then query Style Manager for relevant style info
+    */
+    public function themeChanged(event:Object):Void{
+        if(event.type=='themeChanged') {
+            //Theme has changed so update objects to reflect new styles
+            setStyles();
+        }else {
+            Debugger.log('themeChanged event broadcast with an object.type not equal to "themeChanged"',Debugger.CRITICAL,'themeChanged','org.lamsfoundation.lams.WorkspaceDialog');
+        }
+    }
+    
+    /**
+    * Called on initialisation and themeChanged event handler
+    */
+    private function setStyles(){
+        //LFWindow, goes first to prevent being overwritten with inherited styles.
+        var styleObj = themeManager.getStyleObject('LFWindow');
+        _container.setStyle('styleName',styleObj);
+
+        //Get the button style from the style manager and apply to both buttons
+        styleObj = themeManager.getStyleObject('button');
+        ok_btn.setStyle('styleName',styleObj);
+        cancel_btn.setStyle('styleName',styleObj);
+      
+        //Apply combo style 
+        styleObj = themeManager.getStyleObject('combo');
+        lang_cb.setStyle('styleName',styleObj);
+        theme_cb.setStyle('styleName',styleObj);
+
+        //Apply label style 
+        styleObj = themeManager.getStyleObject('label');
+        lang_lbl.setStyle('styleName',styleObj);
+        theme_lbl.setStyle('styleName',styleObj);
+    }
+
+    /**
+    * Called by the cancel button 
+    */
+    private function cancel(){
+        trace('Cancel');
+        //close parent window
+        _container.deletePopUp();
+    }
+    
+    /**
+    * Called by the OK button 
+    */
+    private function ok(){
+        Debugger.log('OK Clicked',Debugger.GEN,'ok','org.lamsfoundation.lams.PreferencesDialog');
+        //Validate and set prefs
+        var validateOk:Boolean = true;   //Set to false if any validation fails and rollback changes if it does
+        
+        //Language - Has it changed?
+        if(currentLanguage!=newLanguage){
+            Debugger.log('language changed to :' + newLanguage,Debugger.GEN,'ok','PreferencesDialog');        
+            validateOk = cfg.setItem('language',newLanguage);
+            validateOk = cfg.saveItem('language');
+        }
+        
+        //Theme - Has it changed?
+        if(currentTheme!=newTheme){
+            Debugger.log('Theme changed to :' + newTheme,Debugger.GEN,'ok','PreferencesDialog');        
+            //Save the change to the config class
+            validateOk = cfg.setItem('theme',newTheme);
+            validateOk = cfg.saveItem('theme');
+            //Load the new theme and then broadcast change
+            themeManager.loadTheme(newTheme);
+            themeManager.broadcastThemeChanged();
+        }
+        
+        //validateOk = cfg.setItem('theme',newTheme);
+        //If changing data didn't validate then rollback changes
+        if(!validateOk){
+           Debugger.log('Not all changes could be saved',Debugger.MED,'ok','PreferencesDialog');
+           //TODO DI 01/06/05 Popup alert with error for user informing of error and consequences
+        } else {
+           //close popup
+           _container.deletePopUp();
+        }
+    }
+    
+    /**
+    * If an alert was spawned by this dialog this method is called when it's closed
+    */
+    private function alertClosed(evt:Object){
+        //Should prefs dialog be closed?
+        //TODO DI 01/06/05 check for delete of dialog
+        //_container.deletePopUp();
+    }
+    
+    /**
+    * Event dispatched by parent container when close button clicked
+    */
+    public function click(e:Object):Void{
+        trace('PreferencesDialog.click');
+        e.target.deletePopUp();
+    }
+    
+    
+    /**
+    * Main resize method, called by scrollpane container/parent
+    */
+    public function setSize(w:Number,h:Number):Void{
+        //Debugger.log('setSize',Debugger.GEN,'setSize','org.lamsfoundation.lams.common.ws.WorkspaceDialog');
+        //Size the panel
+        panel.setSize(w,h);
+
+        //Buttons
+        ok_btn.move(w-xOkOffset,h-yOkOffset);
+        cancel_btn.move(w-xCancelOffset,h-yCancelOffset);
+    }
+    
+    //Gets+Sets
+    /**
+    * set the container refernce to the window holding the dialog
+    */
+    function set container(value:MovieClip){
+        _container = value;
+    }
+
+}
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