Moved widgets into core

git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/cms/trunk@39562 467b73ca-7a2a-4603-9d3b-597d59a354a9

code/CMSMain.php

@@ -66,9 +66,9 @@ class CMSMain extends LeftAndMain implements CurrentPageIdentifier, PermissionPr
 				
 		Requirements::themedCSS('typography');
 		
-		// For Blog
+		// For Widgets
-		Requirements::css("blog/css/WidgetAreaEditor.css");
+		Requirements::css("cms/css/WidgetAreaEditor.css");
-		Requirements::javascript("blog/javascript/WidgetAreaEditor.js");
+		Requirements::javascript("cms/javascript/WidgetAreaEditor.js");
 		
 		// HACK ALERT:
 		// We need a better way of including all of the CSS that *might* be used by this application.

code/WidgetAreaEditor.php

@@ -0,0 +1,98 @@
+<?php
+
+class WidgetAreaEditor extends FormField {
+	function FieldHolder() {
+		return $this->renderWith("WidgetAreaEditor");
+	}
+	
+	function AvailableWidgets() {
+		$classes = ClassInfo::subclassesFor('Widget');
+		array_shift($classes);
+		$widgets= new DataObjectSet();
+		
+		foreach($classes as $class) {
+			$widgets->push(singleton($class));
+		}
+		
+		return $widgets;
+	}
+	
+	function UsedWidgets() {
+		$relationName = $this->name;
+		
+		$widgets = $this->form->getRecord()->$relationName()->Widgets();
+		
+		return $widgets;
+	}
+	
+	function IdxField() {
+		return $this->id() . 'ID';
+	}
+	
+	function Value() {
+		$relationName = $this->name;
+		return $this->form->getRecord()->$relationName()->ID;
+	}
+	
+	function saveInto(DataObject $record) {
+		$name = $this->name;
+		$idName = $name . "ID";
+		
+		
+		$widgetarea = $record->$name();
+		
+		$widgetarea->write();
+		$record->$idName = $widgetarea->ID;
+		
+		$widgets = $widgetarea->Widgets();
+		
+		// store the field IDs and delete the missing fields
+		// alternatively, we could delete all the fields and re add them
+		$missingWidgets = array();
+        
+	    foreach($widgets as $existingWidget){
+	    	$missingWidgets[$existingWidget->ID] = $existingWidget;
+	    }    	    
+         
+	   	// write the new widgets to the database
+		if(isset($_REQUEST['Widget'])){
+
+			foreach(array_keys( $_REQUEST['Widget'] ) as $newWidgetID ) {
+				$newWidgetData  = $_REQUEST['Widget'][$newWidgetID];
+				
+				// `ParentID`=0 is for the new page
+		  		$widget = DataObject::get_one( 'Widget', "(`ParentID`='{$record->$name()->ID}' OR `ParentID`=0) AND `Widget`.`ID`='$newWidgetID'" ); 
+		  		
+		  		// check if we are updating an existing widget
+		  		if($widget && isset($missingWidgets[$widget->ID]))
+		  			unset($missingWidgets[$widget->ID] );
+		  		
+		  		// create a new object
+		  		if(!$widget && !empty($newWidgetData['Type']) && class_exists($newWidgetData['Type'])) {
+		  			$widget = new $newWidgetData['Type']();
+		  			$widget->ID = 0;
+		  			$widget->ParentID = $record->$name()->ID;
+		  			
+		  			if(!is_subclass_of($widget, 'Widget')) {
+		  				$widget = null;
+		  			}
+		  		}
+		  		
+		  		if($widget) {
+		  			if($widget->ParentID == 0) {
+		  				$widget->ParentID = $record->$name()->ID;
+		  			}
+		  			$widget->populateFromPostData($newWidgetData);
+		  			//$editable->write();
+		  		}
+		    }
+		}
+    
+    	// remove the fields not saved
+    	foreach($missingWidgets as $removedWidget) {
+    		if(isset($removedWidget) && is_numeric($removedWidget->ID)) $removedWidget->delete();
+    	}
+	}
+}
+
+?>

css/WidgetAreaEditor.css

@@ -0,0 +1,52 @@
+div.availableWidgetsHolder,
+div.usedWidgetsHolder {
+	width: 49%;
+}
+
+div.availableWidgetsHolder {
+	float: left;
+}
+
+div.usedWidgetsHolder {
+	float: right;
+}
+
+div.usedWidgets {
+	min-height: 100px;
+}
+
+div.usedWidgets div.Widget,
+div.availableWidgets div.Widget {
+	width: 90%;
+	border: 1px solid #ddd;
+	border-top: none;
+	margin-bottom: 5px;
+}
+div.widgetDescription p,
+div.widgetFields {
+	margin-left: 8px;
+}
+
+p.deleteWidget {
+	margin: 0;
+	height: 2.2em;
+	line-height: 2.2em;
+	font-size: 1.2em;
+}
+span.widgetDelete {
+	padding-left: 20px;
+	margin-right: 8px;
+	float: right;
+	background: url(../images/delete2.png) no-repeat left center;
+	cursor: pointer;
+}
+div.usedWidgets div.Widget h3,
+div.availableWidgets div.Widget h3 {
+	font-size: 1.3em;
+	height: 1.5em;
+	color: #fff;
+	line-height: 1.5em;
+	text-indent: 5px;
+	background: #7ab7ec url(../images/blogTitleBg.gif);
+	margin: 0;
+}

javascript/WidgetAreaEditor.js

@@ -0,0 +1,157 @@
+WidgetAreaEditor = Class.create();
+WidgetAreaEditor.applyTo('div.WidgetAreaEditor');
+
+WidgetAreaEditor.prototype = {
+	initialize: function() {
+		UsedWidget.applyToChildren($('WidgetAreaEditor_usedWidgets'), 'div.Widget');
+	
+		// Make available widgets draggable
+		var availableWidgets = $('WidgetAreaEditor_availableWidgets').childNodes;
+		for(var i = 0; i < availableWidgets.length; i++) {
+			var widget = availableWidgets[i];
+			if(widget.id)
+				new Draggable(widget.id);
+		}
+		
+		// Create dummy sortable to prevent javascript errors
+		Sortable.create('WidgetAreaEditor_availableWidgets', {tag: 'li', handle: 'handle', containment: []});
+		// Used widgets are sortable
+		Sortable.create('WidgetAreaEditor_usedWidgets', {tag: 'div', handle: 'handle', containment: ['WidgetAreaEditor_availableWidgets', 'WidgetAreaEditor_usedWidgets'], onUpdate: this.updateWidgets});
+		
+		// Figure out maxid, this is used when creating new widgets
+		this.maxid = 0;
+		
+		var usedWidgets = $('WidgetAreaEditor_usedWidgets').childNodes;
+		for(var i = 0; i < usedWidgets.length; i++) {
+			var widget = usedWidgets[i];
+			if(widget.id) {
+				widgetid = widget.id.match(/Widget\[([0-9]+)\]/i);
+				if(widgetid && parseInt(widgetid[1]) > this.maxid)
+					this.maxid = parseInt(widgetid[1]);
+			}
+		}
+		
+		// Ensure correct sort values are written when page is saved
+		$('Form_EditForm').observeMethod('BeforeSave', this.beforeSave.bind(this));
+	},
+	
+	beforeSave: function() {
+		// Ensure correct sort values are written when page is saved
+		var usedWidgets = $('WidgetAreaEditor_usedWidgets');
+		
+		if(usedWidgets) {
+			this.sortWidgets();
+		
+			var children = usedWidgets.childNodes;
+		
+			for( var i = 0; i < children.length; ++i ) {
+				var child = children[i];
+			
+				if(child.beforeSave) {
+					child.beforeSave();
+				}
+			}
+		}
+	},
+	
+	updateWidgets: function() {
+		// This is called when an available widgets is dragged over to used widgets.
+		// It inserts the editor form into the new used widget
+		var usedWidgets = $('WidgetAreaEditor_usedWidgets').childNodes;
+		for(var i = 0; i < usedWidgets.length; i++) {
+			var widget = usedWidgets[i];
+			if(widget.id && (widget.id.indexOf("Widget[") != 0)) {
+				new Ajax.Request(widget.id + "/EditableSegment", {onSuccess : $('WidgetAreaEditor_usedWidgets').parentNode.parentNode.insertWidgetEditor.bind(this)});
+			}
+		}
+	},
+	
+	insertWidgetEditor: function(response) {
+		// Remove placeholder text
+		if($('NoWidgets')) {
+			$('WidgetAreaEditor_usedWidgets').removeChild($('NoWidgets'));
+		}
+	
+		// Find the new widget
+		var usedWidgets = $('WidgetAreaEditor_usedWidgets').childNodes;
+		for(var i = 0; i < usedWidgets.length; i++) {
+			var widget = usedWidgets[i];
+			if(widget.id && (widget.id.indexOf("Widget[") != 0)) {
+				// Clone the widget so we can put it back in the available widgets column
+				clone = widget.cloneNode(true);
+				
+				// Give the widget a unique id
+				widget.innerHTML = response.responseText.replace(/Widget\[0\]/gi, "Widget[new-" + (++$('WidgetAreaEditor_usedWidgets').parentNode.parentNode.maxid) + "]");
+				
+				// Replace the available widget with the used widget with editor form
+				widget.parentNode.insertBefore(widget.childNodes[0], widget);
+				widget.parentNode.removeChild(widget);
+				
+				// Put the clone into the available widgets column
+				$('WidgetAreaEditor_availableWidgets').appendChild(clone);
+				
+				// Reapply behaviour
+				new Draggable(clone.id);
+				Sortable.create('WidgetAreaEditor_usedWidgets', {tag: 'div', handle: 'handle', containment: ['WidgetAreaEditor_availableWidgets', 'WidgetAreaEditor_usedWidgets'], onUpdate: $('WidgetAreaEditor_usedWidgets').parentNode.parentNode.updateWidgets});
+				UsedWidget.applyToChildren($('WidgetAreaEditor_usedWidgets'), 'div.Widget');
+				return;
+			}
+		}
+	},
+	
+	sortWidgets: function() {
+		// Order the sort by the order the widgets are in the list
+		var usedWidgets = $('WidgetAreaEditor_usedWidgets');
+		
+		if (usedWidgets) {
+			widgets = usedWidgets.childNodes;
+			
+			for( i = 0; div = widgets[i]; i++ ) {
+				var fields = div.getElementsByTagName('input');
+				for( j = 0; field = fields.item(j); j++ ) {
+					if( field.name == div.id + '[Sort]' ) {
+						field.value = i;
+					}
+				}
+			}
+		}
+	},
+	
+	deleteWidget: function(widgetToRemove) {
+		// Remove a widget from the used widgets column
+		$('WidgetAreaEditor_usedWidgets').removeChild(widgetToRemove);
+	}
+}
+
+UsedWidget = Class.create();
+
+UsedWidget.prototype = {
+	initialize: function() {
+		// Call deleteWidget when delete button is pushed
+		this.deleteButton = this.findDescendant('span', 'widgetDelete');
+		if(this.deleteButton)
+			this.deleteButton.onclick = this.deleteWidget.bind(this);
+	},
+	
+	// Taken from FieldEditor
+	findDescendant: function(tag, clsName, element) {
+		if(!element)
+			element = this;
+		
+		var descendants = element.getElementsByTagName(tag);
+		
+		for(var i = 0; i < descendants.length; i++) {
+			var el = descendants[i];
+			
+			if(tag.toUpperCase() == el.tagName && el.className.indexOf( clsName ) != -1)
+				return el;
+		}
+		
+		return null;
+	},
+	
+	deleteWidget: function() {
+		this.parentNode.parentNode.parentNode.deleteWidget(this);
+	}
+}
+

templates/WidgetAreaEditor.ss

@@ -0,0 +1,25 @@
+<div class="WidgetAreaEditor" id="WidgetAreaEditor" name="$Name">
+	<input type="hidden" id="$Name" name="$IdxField" value="$Value" />
+	<div class="availableWidgetsHolder">
+		<h2>Available Widgets</h2>
+		<div class="availableWidgets" id="WidgetAreaEditor_availableWidgets">
+			<% control AvailableWidgets %>
+				$DescriptionSegment
+			<% end_control %>
+		</div>
+	</div>
+	<div class="usedWidgetsHolder">
+		<h2>Used Widgets</h2>
+		<div class="usedWidgets" id="WidgetAreaEditor_usedWidgets">
+			<% if UsedWidgets %>
+				<% control UsedWidgets %>
+					$EditableSegment
+				<% end_control %>
+			<% else %>
+				<div id="NoWidgets">
+					<p>To add widgets, drag them from the left area to here.</p>
+				</div>
+			<% end_if %>
+		</div>
+	</div>
+</div>

templates/WidgetDescription.ss

@@ -0,0 +1,6 @@
+<div class="Widget" id="$ClassName">
+	<h3>$CMSTitle</h3>
+	<div class="widgetDescription">
+		<p>$Description</p>
+	</div>
+</div>

templates/WidgetEditor.ss

@@ -0,0 +1,12 @@
+<div class="$ClassName Widget" id="$Name">
+	<h3 class="handle">$CMSTitle</h3>
+	<div class="widgetDescription">
+		<p>$Description</p>
+	</div>
+	<div class="widgetFields">
+		$CMSEditor
+		<input type="hidden" name="$Name[Type]" value="$ClassName" />   
+		<input type="hidden" name="$Name[Sort]" value="$Sort" />
+	</div>
+	<p class="deleteWidget"><span class="widgetDelete">Delete</span></p>
+</div>