silverstripe-cms/javascript/LeftAndMain.Tree.js

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/**
* LeftAndMain_left.js
* Code for supporting the left-hand panel of all the 2-pane admin windows
* This includes code for the action panel at the top, and the draggable, ajax-linked tree.
*/
if(typeof SiteTreeHandlers == 'undefined') SiteTreeHandlers = {};
SiteTreeHandlers.parentChanged_url = 'admin/ajaxupdateparent';
SiteTreeHandlers.orderChanged_url = 'admin/ajaxupdatesort';
SiteTreeHandlers.showRecord_url = 'admin/show/';
SiteTreeHandlers.controller_url = 'admin';
var _HANDLER_FORMS = {
addpage : 'Form_AddForm',
batchactions : 'batchactionsforms',
search : 'search_options'
};
(function($) {
$(window).bind('load', function(e) {
// behaviour.js load handlers need to be fired before this event, so we artificially delay it
setTimeout(function() {
// make sure current ID of loaded form is actually selected in tree
var tree = $('#sitetree')[0], id = $('#Form_EditForm :input[name=ID]').val();
if(!id) id = 0;
tree.setCurrentByIdx(id);
}, 200);
});
}(jQuery));
/**
* Overload this with a real context menu if necessary
*/
var TreeContextMenu = null;
/**
* Extra methods for the tree when used in the LHS of the CMS
*/
TreeAPI = Class.create();
TreeAPI.prototype = {
setCustomURL: function(url, arguments) {
this.customURL = url;
this.customArguments = $H(arguments);
},
clearCustomURL: function() {
this.customURL = this.customArguments = null;
},
url: function(args) {
var args = $H(args).merge(this.customArguments);
var url = this.customURL ? this.customURL : SiteTreeHandlers.loadTree_url;
url = url + (url.match(/\?/) ? '&' : '?') + args.toQueryString();
return url;
},
reload: function(options) {
this.innerHTML = 'Loading...';
var args = {ajax:1, ID:0};
if ($('LangSelector')) args.locale = $('LangSelector').value;
url = this.url(args);
var self = this;
jQuery.get(
url,
function(data, status){
self.innerHTML = data;
self.castAsTreeNode(self.firstChild);
if (options && options.onSuccess) options.onSuccess(data);
},
'html'
);
},
/**
* Perform the given code on the each tree node with the given index.
* There could be more than one :-)
* @param idx The index of the tree node
* @param code A method to be executed, that will be passed the tree node
*/
performOnTreeNode: function(idx, code) {
var treeNode = this.getTreeNodeByIdx(idx);
if(!treeNode) return;
if(treeNode.className.indexOf('manyparents') == -1) {
code(treeNode);
} else {
var i,item,allNodes = this.getElementsByTagName('li');
for(i=0;item=allNodes[i];i++) {
if(treeNode.id == item.id) code(item);
}
}
},
getTreeNodeByIdx : function(idx) {
if(!idx) idx = "0";
var node = document.getElementById('record-' + idx);
if(idx == "0" && !node) node = document.getElementById('record-root');
return node;
},
getIdxOf : function(treeNode) {
if(treeNode && treeNode.id && treeNode.id.match(/record-([0-9a-zA-Z\-]+)$/))
return RegExp.$1;
},
createTreeNode : function(idx, title, pageType) {
var i;
var node = document.createElement('li');
node.id = 'record-' + idx;
node.className = pageType;
var aTag = document.createElement('a');
aTag.href = SiteTreeHandlers.showRecord_url + idx;
aTag.title = 'Page type: ' + pageType;
aTag.innerHTML = title;
node.appendChild(aTag);
SiteTreeNode.create(node, this.options);
return node;
},
setNodeIdx : function(idx, newIdx) {
this.performOnTreeNode(idx, function(treeNode) {
treeNode.id = 'record-' + newIdx;
var aTag = treeNode.getElementsByTagName('a')[0];
aTag.href = aTag.href.replace(idx, newIdx);
});
var treeNode = this.getTreeNodeByIdx(idx);
},
setNodeTitle : function(idx, title) {
this.performOnTreeNode(idx, function(treeNode) {
var aTag = treeNode.getElementsByTagName('a')[0];
aTag.innerHTML = title;
});
},
setNodeIcon: function(idx, newClassName) {
this.performOnTreeNode(idx, function(treeNode) {
treeNode.className = treeNode.className.replace(/(class-)[^\s]*/,'$1' + newClassName);
treeNode.aSpan.className = 'a ' + treeNode.className.replace('closed','spanClosed');
var aTag = treeNode.getElementsByTagName('a')[0];
aTag.title = 'Page type: ' + newClassName;
treeNode.setIconByClass();
});
},
/**
* Set the parent ID of a tree node
*/
setNodeParentID: function (idx, parentID) {
var treeNode = this.getTreeNodeByIdx(idx);
var parentNode = this.getTreeNodeByIdx(parentID);
var currentParentNode = jQuery(treeNode).parents('li')[0];
// Only change parent node if its different than the current,
// otherwise we affect the sort order unnecessarily due to
// appendTreeNode() not looking at existing sorts
if(!currentParentNode || parentNode != currentParentNode) parentNode.appendTreeNode(treeNode);
},
setCurrentByIdx : function(idx) {
if(this.selected) {
var i,item;
for(i=0;item=this.selected[i];i++) {
item.removeNodeClass('current');
}
}
__tree = this;
__tree.selected = [];
this.performOnTreeNode(idx, function(treeNode) {
__tree.selected.push(treeNode);
treeNode.expose();
treeNode.addNodeClass('current');
});
},
changeCurrentTo : function(newNode) {
if(this.selected) {
var i,item;
for(i=0;item=this.selected[i];i++) {
item.removeNodeClass('current');
}
}
newNode.addNodeClass('current');
this.selected = [newNode];
newNode.expose();
},
firstSelected : function() {
if(this.selected) return this.selected[0];
}
};
/**
* Extra methods for the tree node when used in the LHS of the CMS
*/
TreeNodeAPI = Class.create();
TreeNodeAPI.prototype = {
selectTreeNode : function() {
var url = jQuery(this).find('a').attr('href');
if(url && url != '#') {
jQuery('#sitetree').trigger('selectionchanged', {node: this});
// don't get page if either event was cancelled,
// or the tree is currently in a selectable state.
if($('sitetree').notify('SelectionChanged', this) && !jQuery(this.tree).hasClass('multiselect')) {
this.getPageFromServer();
}
} else {
jQuery('#Form_EditForm').concrete('ss').removeForm();
}
},
getPageFromServer : function() {
var self = this;
var xmlhttp = jQuery('#Form_EditForm').concrete('ss').loadForm(
jQuery(this).find('a').attr('href'),
function(response) {
self.removeNodeClass('loading');
var pageID = jQuery(this).find(':input[name=ID]').val();
jQuery('#sitetree')[0].setCurrentByIdx(pageID);
}
);
if(xmlhttp) this.addNodeClass('loading');
},
ajaxExpansion : function() {
this.addNodeClass('loading');
var ul = this.treeNodeHolder(false);
ul.innerHTML = 'loading...';
// Any attempts to add children to this page should, in fact, cue them up for insertion later
ul.cuedNewNodes = [];
ul.appendTreeNode = function(node) {
this.cuedNewNodes[this.cuedNewNodes.length] = node;
}
var args = {ajax:1, ID:this.getIdx()};
// Add current locale for any subtree selection
if ($('LangSelector')) args.locale = $('LangSelector').value;
// If the tree is selectable, we have to show all available children without
// artificial limitations from the serverside (minNodeCount). This is a measure
// to ensure no unexpanded nodes are missed in batch selection
if(Element.hasClassName('sitetree', 'multiselect')) args.minNodeCount = 0;
url = this.tree.url(args);
new Ajax.Request(url, {
onSuccess : this.installSubtree.bind(this),
onFailure : this.showSubtreeLoadingError
});
},
showSubtreeLoadingError: function(response) {
errorMessage('error loading subtree', response);
},
/**
* Context menu
*/
oncontextmenu: function(event) {
if(TreeContextMenu) {
if(!event) event = window.event;
createContextMenu(event, this, TreeContextMenu);
Event.stop(event);
return false;
}
},
duplicatePage: function() {
// Pass the parent ID to the duplicator, which helps ensure that multi-parent pages are duplicated into the node that the user clicked
var parentClause = "";
if(this.parentTreeNode && this.parentTreeNode.getIdx) {
parentClause = "&parentID=" + this.parentTreeNode.getIdx();
}
new Ajax.Request(jQuery('base').attr('href') + 'admin/duplicate/' + this.getIdx() + '?ajax=1' + parentClause, {
method : 'get',
onSuccess : Ajax.Evaluator,
onFailure : function(response) {
errorMessage('Error: ', response);
}
});
},
duplicatePageWithChildren: function() {
new Ajax.Request(jQuery('base').attr('href') + 'admin/duplicatewithchildren/' + this.getIdx() + '?ajax=1', {
method : 'get',
onSuccess : Ajax.Evaluator,
onFailure : function(response) {
errorMessage('Error: ', response);
}
});
}
}
/**
* In the case of Tree & DraggableTree, the root tree and the sub-trees all use the same class.
* In this case, however, SiteTree has a much bigger API and so SiteSubTree is smaller.
*/
SiteSubTree = Class.extend('Tree').extend('TreeAPI');
SiteSubTree.prototype = {
castAsTreeNode: function(li) {
behaveAs(li, SiteTreeNode, this.options);
}
}
/**
* Our SiteTree class extends the tree object with a richer manipulation API.
* The server will send a piece javascript that uses these functions. In this way, the server
* has flexibility over its operation, but the Script->HTML interface is kept client-side.
*/
SiteTree = Class.extend('SiteSubTree');
SiteTree.prototype = {
initialize : function() {
this.Tree.initialize();
/*
if(!this.tree.selected) this.tree.selected = [];
var els = this.getElementsByTagName('li');
for(var i=0;i<els.length;i++) if(els[i].className.indexOf('current') > -1) {
this.tree.selected.push(els[i]);
break;
}
*/
this.observeMethod('SelectionChanged', this.interruptLoading.bind(this) );
jQuery('#Form_EditForm').bind('loadnewpage', this.onLoadNewPage.bind(this));
},
destroy: function () {
if(this.Tree) this.Tree.destroy();
this.Tree = null;
this.SiteSubTree = null;
this.TreeAPI = null;
this.selected = null;
},
/**
* Stop the currently loading node from loading.
*/
interruptLoading: function( newLoadingNode ) {
if( this.loadingNode ) this.loadingNode.removeNodeClass('loading');
this.loadingNode = newLoadingNode;
},
/**
* Assumes to be triggered by a form element with the following input fields:
* ID, ParentID, TreeTitle (or Title), ClassName
*/
onLoadNewPage: function(e, eventData) {
// finds a certain value in an array generated by jQuery.serializeArray()
var findInSerializedArray = function(arr, name) {
for(var i=0; i<arr.length; i++) {
if(arr[i].name == name) return arr[i].value;
};
return false;
};
var id = jQuery(e.target.ID).val();
// check if a form with a valid ID exists
if(id) {
var parentID = jQuery(e.target.ParentID).val();
// set title (either from TreeTitle or from Title fields)
// Treetitle has special HTML formatting to denote the status changes.
var title = jQuery((e.target.TreeTitle) ? e.target.TreeTitle : e.target.Title).val();
if(title) this.setNodeTitle(id, title);
// update icon (only if it has changed)
var className = jQuery(e.target.ClassName).val();
if(className) this.setNodeIcon(id, className);
// check if node exists, might have been created instead
if(!this.getTreeNodeByIdx(id)) {
var newNode = $('sitetree').createTreeNode(id, title, className);
var parentNode = $('sitetree').getTreeNodeByIdx(parentID);
if(parentNode) parentNode.appendTreeNode(newNode);
//newNode.selectTreeNode();
}
// set correct parent (only if it has changed)
if(parentID) this.setNodeParentID(id, jQuery(e.target.ParentID).val());
// set current tree element
this.setCurrentByIdx(id);
} else {
if(typeof eventData.origData != 'undefined') {
var node = this.getTreeNodeByIdx(eventData.origData.ID);
if(node && node.parentTreeNode) node.parentTreeNode.removeTreeNode(node);
}
}
}
}
SiteTreeNode = Class.extend('TreeNode').extend('TreeNodeAPI');
SiteTreeNode.prototype = {
initialize: function(options) {
this.TreeNode.initialize(options);
if(this.className && this.className.match(/ *([^ ]+)( +|$)/)) {
if((typeof siteTreeHints != 'undefined') && siteTreeHints[ RegExp.$1 ]) {
this.hints = siteTreeHints[ RegExp.$1 ];
this.dropperOptions = {
accept : (this.hints.allowedChildren && (this.className.indexOf('nochildren') == -1))
? this.hints.allowedChildren : 'none'
};
}
}
if(this.className.indexOf('current') > -1) {
if(!this.tree.selected) this.tree.selected = [];
this.tree.selected.push(this);
}
if(!this.hints) this.hints = {}
},
destroy: function () {
if(this.TreeNode) this.TreeNode.destroy();
this.TreeNode = null;
this.TreeNodeAPI = null;
},
castAsTree: function(childUL) {
behaveAs(childUL, SiteSubTree, this.options);
if(this.draggableObj) childUL.makeDraggable();
},
onselect: function() {
this.selectTreeNode();
return false;
},
/**
* Drag'n'drop handlers - Ajax saving
*/
onParentChanged : function(node, oldParent, newParent) {
var self = this;
if(newParent.id.match(/^record-new/)) {
alert("You must save the page before dragging children into it");
return false;
}
if( node == newParent || node.getIdx() == newParent.getIdx() ) {
alert("You cannot add a page to itself");
return false;
}
if(node.innerHTML.toLowerCase().indexOf('<del') > -1) {
alert("You can't moved deleted pages");
return false;
}
if( Element.hasClassName( newParent, 'nochildren' ) ) {
alert("You can't add children to that node");
return false;
}
jQuery.post(
SiteTreeHandlers.parentChanged_url,
'ID=' + node.getIdx() + '&ParentID=' + newParent.getIdx(),
function(data, status) {
// TODO This should use a more common serialization in a new tree library
if(data.modified) {
for(var id in data.modified) {
self.tree.setNodeTitle(id, data.modified[id]['TreeTitle']);
}
}
// Check if current page still exists, and refresh it.
// Otherwise remove the current form
var selectedNode = self.tree.firstSelected();
if(selectedNode) {
var selectedNodeId = self.tree.getIdxOf(selectedNode);
if(data.modified[selectedNode.getIdx()]) {
// only if the current page was modified
selectedNode.selectTreeNode();
}
}
},
'json'
);
return true;
},
/**
* Called when the tree has been resorted
* nodeList is a list of all the nodes in the correct rder
* movedNode is the node that actually got moved to trigger this resorting
*/
onOrderChanged : function(nodeList, movedNode) {
var self = this;
var i, parts = Array();
sort = 0;
for(i=0;i<nodeList.length;i++) {
if(nodeList[i].getIdx && nodeList[i].getIdx()) {
parts[parts.length] = 'ID[]=' + nodeList[i].getIdx();
// Ensure that the order of new records is preserved when they are moved THEN saved
if(
nodeList[i].id.indexOf("record-new") == 0
&& $('Form_EditForm_ID')
&& ('record-' + $('Form_EditForm_ID').value == nodeList[i].id)
&& $('Form_EditForm_Sort')
) {
$('Form_EditForm_Sort').value = ++sort
}
}
}
if(movedNode.getIdx && movedNode.getIdx()) {
parts[parts.length] = 'MovedNodeID=' + movedNode.getIdx();
}
if(parts) {
jQuery.post(
SiteTreeHandlers.orderChanged_url,
parts.join('&'),
function(data, status) {
// TODO This should use a more common serialization in a new tree library
if(data.modified) {
for(var id in data.modified) {
self.tree.setNodeTitle(id, data.modified[id]['TreeTitle']);
}
}
// Check if current page still exists, and refresh it.
// Otherwise remove the current form
var selectedNode = self.tree.firstSelected();
if(selectedNode) {
var selectedNodeId = self.tree.getIdxOf(selectedNode);
if(data.modified[selectedNode.getIdx()]) {
// only if the current page was modified
selectedNode.selectTreeNode();
}
}
},
'json'
);
}
return true;
}
}
// Build the site tree
SiteTree.applyTo('#sitetree');
/**
* Reorganise action checkbox
*/
ReorganiseAction = Class.create();
ReorganiseAction.applyTo('#sortitems');
ReorganiseAction.prototype = {
initialize: function () {
},
onclick : function() {
if ($('sitetree').isDraggable == false) {
$('sitetree').makeDraggable();
} else {
$('sitetree').stopBeingDraggable();
}
}
}
var _CURRENT_CONTEXT_MENU = null;
/**
* Create a new context menu
* @param event The event object
* @param owner The DOM element that this context-menu was requested from
* @param menuItems A map of title -> method; context-menu operations to get called
*/
function createContextMenu(event, owner, menuItems) {
if(_CURRENT_CONTEXT_MENU) {
document.body.removeChild(_CURRENT_CONTEXT_MENU);
_CURRENT_CONTEXT_MENU = null;
}
var menu = document.createElement("ul");
menu.className = 'contextMenu';
menu.style.position = 'absolute';
menu.style.left = event.clientX + 'px';
menu.style.top = event.clientY + 'px';
var menuItemName, menuItemTag, menuATag;
for(menuItemName in menuItems) {
menuItemTag = document.createElement("li");
menuATag = document.createElement("a");
menuATag.href = "#";
menuATag.onclick = menuATag.oncontextmenu = contextmenu_onclick;
menuATag.innerHTML = menuItemName;
menuATag.handler = menuItems[menuItemName];
menuATag.owner = owner;
menuItemTag.appendChild(menuATag);
menu.appendChild(menuItemTag);
}
document.body.appendChild(menu);
document.body.onclick = contextmenu_close;
_CURRENT_CONTEXT_MENU = menu;
return menu;
}
function contextmenu_close() {
if(_CURRENT_CONTEXT_MENU) {
document.body.removeChild(_CURRENT_CONTEXT_MENU);
_CURRENT_CONTEXT_MENU = null;
}
}
function contextmenu_onclick() {
this.handler(this.owner);
contextmenu_close();
return false;
}