forked from extern/egroupware
708 lines
17 KiB
JavaScript
708 lines
17 KiB
JavaScript
/**
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* EGroupware eTemplate2 - JS DOM Widget class
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*
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* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
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* @package etemplate
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* @subpackage api
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* @link http://www.egroupware.org
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* @author Andreas Stöckel
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* @copyright Stylite 2011
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* @version $Id$
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*/
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"use strict";
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/*egw:uses
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et2_core_interfaces;
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et2_core_widget;
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/phpgwapi/js/egw_action/egw_action.js;
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*/
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/**
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* Abstract widget class which can be inserted into the DOM. All widget classes
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* deriving from this class have to care about implementing the "getDOMNode"
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* function which has to return the DOM-Node.
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*
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* @augments et2_widget
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*/
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var et2_DOMWidget = et2_widget.extend(et2_IDOMNode,
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{
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attributes: {
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"disabled": {
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"name": "Disabled",
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"type": "boolean",
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"description": "Defines whether this widget is visible. Not to be confused with an input widget's HTML attribute 'disabled'.",
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"default": false
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},
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"width": {
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"name": "Width",
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"type": "dimension",
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"default": et2_no_init,
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"description": "Width of the element in pixels, percentage or 'auto'"
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},
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"height": {
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"name": "Height",
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"type": "dimension",
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"default": et2_no_init,
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"description": "Height of the element in pixels, percentage or 'auto'"
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},
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"class": {
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"name": "CSS Class",
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"type": "string",
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"default": et2_no_init,
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"description": "CSS Class which is applied to the dom element of this node"
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},
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"overflow": {
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"name": "Overflow",
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"type": "string",
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"default": et2_no_init,
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"description": "If set, the css-overflow attribute is set to that value"
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},
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"parent_node": {
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"name": "DOM parent",
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"type": "string",
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"default": et2_no_init,
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"description": "Insert into the target DOM node instead of the normal location"
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},
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"actions": {
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"name": "Actions list",
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"type": "any",
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"default": et2_no_init,
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"description": "List of egw actions that can be done on the widget. This includes context menu, drag and drop. TODO: Link to action documentation"
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},
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},
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/**
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* When the DOMWidget is initialized, it grabs the DOM-Node of the parent
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* object (if available) and passes it to its own "createDOMNode" function
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*
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* @memberOf et2_DOMWidget
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*/
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init: function() {
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// Call the inherited constructor
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this._super.apply(this, arguments);
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this.parentNode = null;
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this._attachSet = {
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"node": null,
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"parent": null
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};
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this.disabled = false;
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this._surroundingsMgr = null;
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},
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/**
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* Detatches the node from the DOM and clears all references to the parent
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* node or the dom node of this widget.
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*/
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destroy: function() {
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this.detatchFromDOM();
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this.parentNode = null;
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this._attachSet = {};
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if (this._surroundingsMgr)
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{
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this._surroundingsMgr.free();
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this._surroundingsMgr = null;
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}
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this._super();
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},
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/**
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* Attaches the container node of this widget to the DOM-Tree
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*/
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doLoadingFinished: function() {
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// Check whether the parent implements the et2_IDOMNode interface. If
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// yes, grab the DOM node and create our own.
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if (this._parent && this._parent.implements(et2_IDOMNode)) {
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if(this.options.parent_node)
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{
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this.set_parent_node(this.options.parent_node);
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}
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else
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{
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this.setParentDOMNode(this._parent.getDOMNode(this));
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}
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}
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return true;
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},
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/**
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* Detaches the widget from the DOM tree, if it had been attached to the
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* DOM-Tree using the attachToDOM method.
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*/
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detatchFromDOM: function() {
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if (this._attachSet.node && this._attachSet.parent)
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{
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// Remove the current node from the parent node
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this._attachSet.parent.removeChild(this._attachSet.node);
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// Reset the "attachSet"
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this._attachSet = {
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"node": null,
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"parent": null
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};
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return true;
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}
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return false;
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},
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/**
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* Attaches the widget to the DOM tree. Fails if the widget is already
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* attached to the tree or no parent node or no node for this widget is
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* defined.
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*/
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attachToDOM: function() {
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// Attach the DOM node of this widget (if existing) to the new parent
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var node = this.getDOMNode(this);
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if (node && this.parentNode &&
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(node != this._attachSet.node ||
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this.parentNode != this._attachSet.parent))
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{
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// If the surroundings manager exists, surround the DOM-Node of this
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// widget with the DOM-Nodes inside the surroundings manager.
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if (this._surroundingsMgr)
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{
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node = this._surroundingsMgr.getDOMNode(node);
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}
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// Append this node at its index
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var idx = this.getDOMIndex();
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if (idx < 0 || idx >= this.parentNode.childNodes.length - 1)
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{
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this.parentNode.appendChild(node);
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}
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else
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{
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this.parentNode.insertBefore(node, this.parentNode.childNodes[idx]);
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}
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// Store the currently attached nodes
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this._attachSet = {
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"node": node,
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"parent": this.parentNode
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};
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return true;
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}
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return false;
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},
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isAttached: function() {
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return this.parentNode != null;
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},
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getSurroundings: function() {
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if (!this._surroundingsMgr)
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{
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this._surroundingsMgr = new et2_surroundingsMgr(this);
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}
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return this._surroundingsMgr;
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},
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/**
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* Set the parent DOM node of this element. Takes a wider variety of types
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* than setParentDOMNode(), and matches the set_<attribute> naming convention.
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*
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* @param _node String|DOMNode DOM node to contain the widget, or the ID of the DOM node.
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*/
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set_parent_node: function(_node) {
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if(typeof _node == "string")
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{
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this.setParentDOMNode($j('#'+_node).get(0));
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}
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else
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{
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this.setParentDOMNode(_node);
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}
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},
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/**
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* Set the parent DOM node of this element. If another parent node is already
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* set, this widget removes itself from the DOM tree
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*/
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setParentDOMNode: function(_node) {
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if (_node != this.parentNode)
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{
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// Detatch this element from the DOM tree
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this.detatchFromDOM();
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this.parentNode = _node;
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// And attatch the element to the DOM tree
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this.attachToDOM();
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}
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},
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/**
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* Returns the parent node.
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*/
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getParentDOMNode: function() {
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return this.parentNode;
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},
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/**
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* Returns the index of this element in the DOM tree
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*/
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getDOMIndex: function() {
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if (this._parent)
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{
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var idx = 0;
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var children = this._parent.getChildren();
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for (var i = 0; i < children.length; i++)
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{
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if (children[i] == this)
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{
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return idx;
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}
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else if (children[i].isInTree())
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{
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idx++;
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}
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}
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}
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return -1;
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},
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/**
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* Sets the id of the DOM-Node.
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*/
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set_id: function(_value) {
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this.id = _value;
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var node = this.getDOMNode(this);
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if (node)
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{
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if (_value != "")
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{
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node.setAttribute("id", _value);
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}
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else
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{
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node.removeAttribute("id");
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}
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}
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},
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set_disabled: function(_value) {
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var node = this.getDOMNode(this);
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if (node && this.disabled != _value)
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{
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this.disabled = _value;
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if (_value)
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{
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$j(node).hide();
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}
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else
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{
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$j(node).show();
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}
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}
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},
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set_width: function(_value) {
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this.width = _value;
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var node = this.getDOMNode(this);
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if (node)
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{
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$j(node).css("width", _value);
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}
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},
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set_height: function(_value) {
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this.height = _value;
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var node = this.getDOMNode(this);
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if (node)
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{
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$j(node).css("height", _value);
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}
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},
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set_class: function(_value) {
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var node = this.getDOMNode(this);
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if (node)
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{
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if (this["class"])
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{
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$j(node).removeClass(this["class"]);
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}
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$j(node).addClass(_value);
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}
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this["class"] = _value;
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},
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set_overflow: function(_value) {
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this.overflow = _value;
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var node = this.getDOMNode(this);
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if (node)
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{
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$j(node).css("overflow", _value);
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}
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},
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/**
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* Set Actions on the widget
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*
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* Each action is defined as an object:
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*
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* move: {
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* type: "drop",
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* acceptedTypes: "mail",
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* icon: "move",
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* caption: "Move to"
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* onExecute: javascript:mail_move"
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* }
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*
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* This will turn the widget into a drop target for "mail" drag types. When "mail" drag types are dropped,
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* the global function mail_move(egwAction action, egwActionObject sender) will be called. The ID of the
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* dragged "mail" will be in sender.id, some information about the sender will be in sender.context. The
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* etemplate2 widget involved can typically be found in action.parent.data.widget, so your handler
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* can operate in the widget context easily. The location varies depending on your action though. It
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* might be action.parent.parent.data.widget
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*
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* To customise how the actions are handled for a particular widget, override _link_actions(). It handles
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* the more widget-specific parts.
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*
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* @param Object {ID: {attributes..}+} map of egw action information
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* @see etemplate/inc/class.etemplate_widget_nextmatch->egw_actions()
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*/
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set_actions: function(actions)
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{
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if(this.id == "" || typeof this.id == "undefined")
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{
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this.egw().debug("warn", "Widget should have an ID if you want actions",this);
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return;
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}
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// Initialize the action manager and add some actions to it
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var gam = egw_getAppActionManager();
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this._actionManager = gam.addAction("actionManager", this.id);
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// ActionManager wants an array
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var parsed_actions = [];
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if(typeof actions == "object" && actions)
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{
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for(var key in actions)
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{
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actions[key].id = key;
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if(typeof actions[key].icon != "undefined" && actions[key].icon)
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{
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actions[key].iconUrl = this.egw().image(actions[key].icon);
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}
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parsed_actions.push(actions[key]);
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}
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}
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else
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{
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parsed_actions = actions;
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}
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this._actionManager.updateActions(parsed_actions);
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// Put a reference to the widget into the action stuff, so we can
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// easily get back to widget context from the action handler
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this._actionManager.data = {widget: this};
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// Link the actions to the DOM
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this._link_actions(parsed_actions);
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},
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/**
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* Link the actions to the DOM nodes / widget bits.
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*
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*/
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_link_actions: function(parsed_actions)
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{
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// Get the top level element for the tree
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var objectManager = egw_getAppObjectManager(true);
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var widget_object = objectManager.getObjectById(this.id);
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if (widget_object == null) {
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// Add a new container to the object manager which will hold the widget
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// objects
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widget_object = objectManager.addObject(this.id, new et2_action_object_impl(this));
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}
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// Delete all old objects
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widget_object.clear();
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// Go over the widget & add links - this is where we decide which actions are
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// 'allowed' for this widget at this time
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var action_links = [];
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for(var i = 0; i < parsed_actions.length; i++)
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{
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action_links.push(parsed_actions[i].id);
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}
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widget_object.updateActionLinks(action_links);
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}
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});
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/**
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* The surroundings manager class allows to append or prepend elements around
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* an widget node.
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*
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* @augments Class
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*/
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var et2_surroundingsMgr = Class.extend(
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{
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/**
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* Constructor
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*
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* @memberOf et2_surroundingsMgr
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* @param _widget
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*/
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init: function(_widget) {
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this.widget = _widget;
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this._widgetContainer = null;
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this._widgetSurroundings = [];
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this._widgetPlaceholder = null;
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this._widgetNode = null;
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this._ownPlaceholder = true;
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},
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destroy: function() {
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this._widgetContainer = null;
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this._widgetSurroundings = null;
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this._widgetPlaceholder = null;
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this._widgetNode = null;
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},
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prependDOMNode: function(_node) {
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this._widgetSurroundings.unshift(_node);
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this._surroundingsUpdated = true;
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},
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appendDOMNode: function(_node) {
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// Append an placeholder first if none is existing yet
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if (this._ownPlaceholder && this._widgetPlaceholder == null)
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{
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this._widgetPlaceholder = document.createElement("span");
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this._widgetSurroundings.push(this._widgetPlaceholder);
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}
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// Append the given node
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this._widgetSurroundings.push(_node);
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this._surroundingsUpdated = true;
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},
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insertDOMNode: function(_node) {
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if (!this._ownPlaceholder || this._widgetPlaceholder == null)
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{
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this.appendDOMNode(_node);
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return;
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}
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// Get the index of the widget placeholder and delete it, insert the
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// given node instead
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var idx = this._widgetSurroundings.indexOf(this._widgetPlaceholder);
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this._widgetSurroundings.splice(idx, 1, _node);
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// Delete the reference to the own placeholder
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this._widgetPlaceholder = null;
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this._ownPlaceholder = false;
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},
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removeDOMNode: function(_node) {
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for (var i = 0; i < this._widgetSurroundings.length; i++)
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{
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if (this._widgetSurroundings[i] == _node)
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{
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this._widgetSurroundings.splice(i, 1);
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this._surroundingsUpdated = true;
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break;
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}
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}
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},
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setWidgetPlaceholder: function(_node) {
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if (_node != this._widgetPlaceholder)
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{
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if (_node != null && this._ownPlaceholder && this._widgetPlaceholder != null)
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{
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// Delete the current placeholder which was created by the
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// widget itself
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var idx = this._widgetSurroundings.indexOf(this._widgetPlaceholder);
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this._widgetSurroundings.splice(idx, 1);
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// Delete any reference to the own placeholder and set the
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// _ownPlaceholder flag to false
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this._widgetPlaceholder = null;
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this._ownPlaceholder = false;
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}
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this._ownPlaceholder = (_node == null);
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this._widgetPlaceholder = _node;
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this._surroundingsUpdated = true;
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}
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},
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_rebuildContainer: function() {
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// Return if there has been no change in the "surroundings-data"
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if (!this._surroundingsUpdated)
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{
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return false;
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}
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// Build the widget container
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if (this._widgetSurroundings.length > 0)
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{
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// Check whether the widgetPlaceholder is really inside the DOM-Tree
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var hasPlaceholder = et2_hasChild(this._widgetSurroundings,
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this._widgetPlaceholder);
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// If not, append another widget placeholder
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if (!hasPlaceholder)
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{
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this._widgetPlaceholder = document.createElement("span");
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this._widgetSurroundings.push(this._widgetPlaceholder);
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this._ownPlaceholder = true;
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}
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// If the surroundings array only contains one element, set this one
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// as the widget container
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if (this._widgetSurroundings.length == 1)
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{
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if (this._widgetSurroundings[0] == this._widgetPlaceholder)
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{
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this._widgetContainer = null;
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}
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else
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{
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this._widgetContainer = this._widgetSurroundings[0];
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}
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}
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else
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{
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// Create an outer "span" as widgetContainer
|
|
this._widgetContainer = document.createElement("span");
|
|
|
|
// Append the children inside the widgetSurroundings array to
|
|
// the widget container
|
|
for (var i = 0; i < this._widgetSurroundings.length; i++)
|
|
{
|
|
this._widgetContainer.appendChild(this._widgetSurroundings[i]);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
this._widgetContainer = null;
|
|
this._widgetPlaceholder = null;
|
|
}
|
|
|
|
this._surroundingsUpdated = false;
|
|
|
|
return true;
|
|
},
|
|
|
|
update: function() {
|
|
if (this._surroundingsUpdated)
|
|
{
|
|
var attached = this.widget ? this.widget.isAttached() : false;
|
|
|
|
// Reattach the widget - this will call the "getDOMNode" function
|
|
// and trigger the _rebuildContainer function.
|
|
if (attached && this.widget)
|
|
{
|
|
this.widget.detatchFromDOM();
|
|
this.widget.attachToDOM();
|
|
}
|
|
}
|
|
},
|
|
|
|
getDOMNode: function(_widgetNode) {
|
|
// Update the whole widgetContainer if this is not the first time this
|
|
// function has been called but the widget node has changed.
|
|
if (this._widgetNode != null && this._widgetNode != _widgetNode)
|
|
{
|
|
this._surroundingsUpdated = true;
|
|
}
|
|
|
|
// Copy a reference to the given node
|
|
this._widgetNode = _widgetNode;
|
|
|
|
// Build the container if it didn't exist yet.
|
|
var updated = this._rebuildContainer();
|
|
|
|
// Return the widget node itself if there are no surroundings arround
|
|
// it
|
|
if (this._widgetContainer == null)
|
|
{
|
|
return _widgetNode;
|
|
}
|
|
|
|
// Replace the widgetPlaceholder with the given widget node if the
|
|
// widgetContainer has been updated
|
|
if (updated)
|
|
{
|
|
this._widgetPlaceholder.parentNode.replaceChild(_widgetNode,
|
|
this._widgetPlaceholder);
|
|
if (!this._ownPlaceholder)
|
|
{
|
|
this._widgetPlaceholder = _widgetNode;
|
|
}
|
|
}
|
|
|
|
// Return the widget container
|
|
return this._widgetContainer;
|
|
}
|
|
|
|
});
|
|
|
|
/**
|
|
* The egw_action system requires an egwActionObjectInterface Interface implementation
|
|
* to tie actions to DOM nodes. This one can be used by any widget.
|
|
*
|
|
* The class extension is different than the widgets
|
|
*
|
|
*/
|
|
function et2_action_object_impl(widget)
|
|
{
|
|
var aoi = new egwActionObjectInterface();
|
|
aoi.doGetDOMNode = function() {
|
|
return widget.getDOMNode();
|
|
};
|
|
|
|
// _outerCall may be used to determine, whether the state change has been
|
|
// evoked from the outside and the stateChangeCallback has to be called
|
|
// or not.
|
|
aoi.doSetState = function(_state, _outerCall) {
|
|
};
|
|
|
|
// The doTiggerEvent function may be overritten by the aoi if it wants to
|
|
// support certain action implementation specific events like EGW_AI_DRAG_OVER
|
|
// or EGW_AI_DRAG_OUT
|
|
aoi.doTriggerEvent = function(_event, _data) {
|
|
switch(_event)
|
|
{
|
|
case EGW_AI_DRAG_OVER:
|
|
$j(this.node).addClass("ui-state-active");
|
|
break;
|
|
case EGW_AI_DRAG_OUT:
|
|
$j(this.node).removeClass("ui-state-active");
|
|
break;
|
|
}
|
|
};
|
|
|
|
|
|
return aoi;
|
|
};
|