silverstripe-cms/javascript/WidgetAreaEditor.js

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JavaScript
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WidgetAreaEditorClass = Class.create();
WidgetAreaEditorClass.prototype = {
initialize: function() {
this.name = this.getAttribute('name');
this.rewriteWidgetAreaAttributes();
UsedWidget.applyToChildren($('usedWidgets-'+this.name), 'div.Widget');
// Make available widgets draggable
var availableWidgets = $('availableWidgets-'+this.name).childNodes;
for(var i = 0; i < availableWidgets.length; i++) {
var widget = availableWidgets[i];
// Don't run on comments, whitespace, etc
if (widget.nodeType == 1) {
// Gotta change their ID's because otherwise we get clashes between two tabs
widget.id = widget.id + '-'+this.name;
if(widget.id) {
widget.onclick = function(event) {
parts = event.currentTarget.id.split('-');
var widgetArea = parts.pop();
var className = parts.pop();
$('WidgetAreaEditor-'+widgetArea).addWidget(className, widgetArea);
}
}
}
}
// Create dummy sortable to prevent javascript errors
Sortable.create('availableWidgets-'+this.name, {
tag: 'li',
handle: 'handle',
containment: []
});
// Used widgets are sortable
Sortable.create('usedWidgets-'+this.name, {
tag: 'div',
handle: 'handle',
containment: ['availableWidgets-'+this.name, 'usedWidgets-'+this.name],
onUpdate: this.updateWidgets
});
// Figure out maxid, this is used when creating new widgets
this.maxid = 0;
var usedWidgets = $('usedWidgets-'+this.name).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[2]) > this.maxid) {
this.maxid = parseInt(widgetid[2]);
}
}
}
// Ensure correct sort values are written when page is saved
$('Form_EditForm').observeMethod('BeforeSave', this.beforeSave.bind(this));
},
rewriteWidgetAreaAttributes: function() {
this.name = this.getAttribute('name');
var monkeyWith = function(widgets, name) {
for(var i = 0; i < widgets.length; i++) {
widget = widgets[i];
if (!widget.getAttribute('rewritten') && (widget.id || widget.name)) {
if (widget.id && widget.id.indexOf('Widget[') === 0) {
var newValue = widget.id.replace(/Widget\[/, 'Widget['+name+'][');
//console.log('Renaming '+widget.tagName+' ID '+widget.id+' to '+newValue);
widget.id = newValue;
}
if (widget.name && widget.name.indexOf('Widget[') === 0) {
var newValue = widget.name.replace(/Widget\[/, 'Widget['+name+'][');
//console.log('Renaming '+widget.tagName+' Name '+widget.name+' to '+newValue);
widget.name = newValue;
}
widget.setAttribute('rewritten', 'yes');
}
else {
//console.log('Skipping '+(widget.id ? widget.id : (widget.name ? widget.name : 'unknown '+widget.tagName)));
}
}
}
monkeyWith($$('#WidgetAreaEditor-'+this.name+' .Widget'), this.name);
monkeyWith($$('#WidgetAreaEditor-'+this.name+' .Widget *'), this.name);
},
beforeSave: function() {
// Ensure correct sort values are written when page is saved
var usedWidgets = $('usedWidgets-'+this.name);
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();
}
}
}
},
addWidget: function(className, holder) {
this.name = holder;
new Ajax.Request('Widget_Controller/EditableSegment/' + className, {
onSuccess : $('usedWidgets-'+holder).parentNode.parentNode.insertWidgetEditor.bind(this)
});
},
updateWidgets: function() {
// Gotta get the name of the current dohickey based off the ID
this.name = this.element.id.split('-').pop();
// alert(this.name);
// Gotta get the name of the current dohickey based off the ID
this.name = this.element.id.split('-').pop();
// 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 = $('usedWidgets-'+this.name).childNodes;
for(var i = 0; i < usedWidgets.length; i++) {
var widget = usedWidgets[i];
if(widget.id && (widget.id.indexOf("Widget[") != 0) && (widget.id != 'NoWidgets-'+this.name)) {
// Need to remove the -$Name part.
var wIdArray = widget.id.split('-');
wIdArray.pop();
new Ajax.Request('Widget_Controller/EditableSegment/' + wIdArray.join('-'), {
onSuccess : $('usedWidgets-'+this.name).parentNode.parentNode.insertWidgetEditor.bind(this)
});
}
}
},
insertWidgetEditor: function(response) {
// Remove placeholder text
if($('NoWidgets-'+this.name)) {
$('usedWidgets-'+this.name).removeChild($('NoWidgets-'+this.name));
}
var usedWidgets = $('usedWidgets-'+this.name).childNodes;
// Give the widget a unique id
widget = document.createElement('div');
widget.innerHTML = response.responseText.replace(/Widget\[0\]/gi, "Widget[new-" + (++$('usedWidgets-'+this.name).parentNode.parentNode.maxid) + "]");
$('usedWidgets-'+this.name).appendChild(widget.childNodes[0]);
$('usedWidgets-'+this.name).parentNode.parentNode.rewriteWidgetAreaAttributes();
UsedWidget.applyToChildren($('usedWidgets-'+this.name), 'div.Widget');
Sortable.create('usedWidgets-SideBar', {
tag: 'div',
handle: 'handle',
containment: ['availableWidgets-'+this.name, 'usedWidgets-'+this.name],
onUpdate: $('usedWidgets-'+this.name).parentNode.parentNode.updateWidgets
});
},
sortWidgets: function() {
// Order the sort by the order the widgets are in the list
var usedWidgets = $('usedWidgets-'+this.name);
if(usedWidgets) {
widgets = usedWidgets.childNodes;
for(i = 0; i < widgets.length; i++) {
var div = widgets[i];
if(div.nodeName != '#comment') {
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
$('usedWidgets-'+this.name).removeChild(widgetToRemove);
// TODO ... re-create NoWidgets div?
}
}
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);
}
}
// Loop over all WidgetAreas and fire 'em up
var wAs = $$('.WidgetAreaEditor');
for(var i = 0; i < wAs.length; i++) {
WidgetAreaEditorClass.applyTo('div#'+wAs[i].id);
}