4 * Copyright(c) 2006-2007, Ext JS, LLC.
6 * Originally Released Under LGPL - original licence link has changed is not relivant.
9 * <script type="text/javascript">
14 * @extends Roo.util.Observable
15 * Create a "View" for an element based on a data model or UpdateManager and the supplied DomHelper template.
16 * This class also supports single and multi selection modes. <br>
17 * Create a data model bound view:
19 var store = new Roo.data.Store(...);
21 var view = new Roo.View({
23 tpl : '<div id="{0}">{2} - {1}</div>', // auto create template
26 selectedClass: "ydataview-selected",
30 // listen for node click?
31 view.on("click", function(vw, index, node, e){
32 alert('Node "' + node.id + '" at index: ' + index + " was clicked.");
36 dataModel.load("foobar.xml");
38 For an example of creating a JSON/UpdateManager view, see {@link Roo.JsonView}.
40 * <b>Note: The root of your template must be a single node. Table/row implementations may work but are not supported due to
41 * IE"s limited insertion support with tables and Opera"s faulty event bubbling.</b>
43 * Note: old style constructor is still suported (container, template, config)
47 * @param {Object} config The config object
50 Roo.View = function(config, depreciated_tpl, depreciated_config){
52 if (typeof(depreciated_tpl) == 'undefined') {
53 // new way.. - universal constructor.
54 Roo.apply(this, config);
55 this.el = Roo.get(this.el);
58 this.el = Roo.get(config);
59 this.tpl = depreciated_tpl;
60 Roo.apply(this, depreciated_config);
64 if(typeof(this.tpl) == "string"){
65 this.tpl = new Roo.Template(this.tpl);
67 // support xtype ctors..
68 this.tpl = new Roo.factory(this.tpl, Roo);
80 * Fires before a click is processed. Returns false to cancel the default action.
81 * @param {Roo.View} this
82 * @param {Number} index The index of the target node
83 * @param {HTMLElement} node The target node
84 * @param {Roo.EventObject} e The raw event object
89 * Fires when a template node is clicked.
90 * @param {Roo.View} this
91 * @param {Number} index The index of the target node
92 * @param {HTMLElement} node The target node
93 * @param {Roo.EventObject} e The raw event object
98 * Fires when a template node is double clicked.
99 * @param {Roo.View} this
100 * @param {Number} index The index of the target node
101 * @param {HTMLElement} node The target node
102 * @param {Roo.EventObject} e The raw event object
107 * Fires when a template node is right clicked.
108 * @param {Roo.View} this
109 * @param {Number} index The index of the target node
110 * @param {HTMLElement} node The target node
111 * @param {Roo.EventObject} e The raw event object
113 "contextmenu" : true,
115 * @event selectionchange
116 * Fires when the selected nodes change.
117 * @param {Roo.View} this
118 * @param {Array} selections Array of the selected nodes
120 "selectionchange" : true,
123 * @event beforeselect
124 * Fires before a selection is made. If any handlers return false, the selection is cancelled.
125 * @param {Roo.View} this
126 * @param {HTMLElement} node The node to be selected
127 * @param {Array} selections Array of currently selected nodes
129 "beforeselect" : true,
132 * Fires on every row to render, to allow you to change the data.
133 * @param {Roo.View} this
134 * @param {Object} data to be rendered (change this)
140 "click": this.onClick,
141 "dblclick": this.onDblClick,
142 "contextmenu": this.onContextMenu,
146 this.selections = [];
148 this.cmp = new Roo.CompositeElementLite([]);
150 this.store = Roo.factory(this.store, Roo.data);
151 this.setStore(this.store, true);
153 Roo.View.superclass.constructor.call(this);
156 Roo.extend(Roo.View, Roo.util.Observable, {
159 * @cfg {Roo.data.Store} store Data store to load data from.
164 * @cfg {String|Roo.Element} el The container element.
169 * @cfg {String|Roo.Template} tpl The template used by this View
173 * @cfg {String} dataName the named area of the template to use as the data area
174 * Works with domtemplates roo-name="name"
178 * @cfg {String} selectedClass The css class to add to selected nodes
180 selectedClass : "x-view-selected",
182 * @cfg {String} emptyText The empty text to show when nothing is loaded.
186 * @cfg {Boolean} multiSelect Allow multiple selection
190 * @cfg {Boolean} singleSelect Allow single selection
195 * @cfg {Boolean} toggleSelect - selecting
197 toggleSelect : false,
200 * Returns the element this view is bound to.
201 * @return {Roo.Element}
208 * Refreshes the view.
210 refresh : function(){
213 // if we are using something like 'domtemplate', then
214 // the what gets used is:
215 // t.applySubtemplate(NAME, data, wrapping data..)
216 // the outer template then get' applied with
217 // the store 'extra data'
218 // and the body get's added to the
219 // roo-name="data" node?
220 // <span class='roo-tpl-{name}'></span> ?????
224 this.clearSelections();
227 var records = this.store.getRange();
228 if(records.length < 1) {
230 // is this valid?? = should it render a template??
232 this.el.update(this.emptyText);
237 for(var i = 0, len = records.length; i < len; i++){
238 var data = this.prepareData(records[i].data, i, records[i]);
239 this.fireEvent("preparedata", this, data, i, records[i]);
240 html[html.length] = Roo.util.Format.trim( t.apply(data) );
245 this.el.update(html.join(""));
246 this.nodes = this.el.dom.childNodes;
247 this.updateIndexes(0);
251 * Function to override to reformat the data that is sent to
252 * the template for each node.
253 * DEPRICATED - use the preparedata event handler.
254 * @param {Array/Object} data The raw data (array of colData for a data model bound view or
255 * a JSON object for an UpdateManager bound view).
257 prepareData : function(data, index, record)
259 this.fireEvent("preparedata", this, data, index, record);
263 onUpdate : function(ds, record){
264 this.clearSelections();
265 var index = this.store.indexOf(record);
266 var n = this.nodes[index];
267 this.tpl.insertBefore(n, this.prepareData(record.data, index, record));
268 n.parentNode.removeChild(n);
269 this.updateIndexes(index, index);
272 onAdd : function(ds, records, index){
273 this.clearSelections();
274 if(this.nodes.length == 0){
278 var n = this.nodes[index];
279 for(var i = 0, len = records.length; i < len; i++){
280 var d = this.prepareData(records[i].data, i, records[i]);
282 this.tpl.insertBefore(n, d);
284 this.tpl.append(this.el, d);
287 this.updateIndexes(index);
290 onRemove : function(ds, record, index){
291 this.clearSelections();
292 this.el.dom.removeChild(this.nodes[index]);
293 this.updateIndexes(index);
297 * Refresh an individual node.
298 * @param {Number} index
300 refreshNode : function(index){
301 this.onUpdate(this.store, this.store.getAt(index));
304 updateIndexes : function(startIndex, endIndex){
306 startIndex = startIndex || 0;
307 endIndex = endIndex || ns.length - 1;
308 for(var i = startIndex; i <= endIndex; i++){
314 * Changes the data store this view uses and refresh the view.
315 * @param {Store} store
317 setStore : function(store, initial){
318 if(!initial && this.store){
319 this.store.un("datachanged", this.refresh);
320 this.store.un("add", this.onAdd);
321 this.store.un("remove", this.onRemove);
322 this.store.un("update", this.onUpdate);
323 this.store.un("clear", this.refresh);
327 store.on("datachanged", this.refresh, this);
328 store.on("add", this.onAdd, this);
329 store.on("remove", this.onRemove, this);
330 store.on("update", this.onUpdate, this);
331 store.on("clear", this.refresh, this);
340 * Returns the template node the passed child belongs to or null if it doesn't belong to one.
341 * @param {HTMLElement} node
342 * @return {HTMLElement} The template node
344 findItemFromChild : function(node){
345 var el = this.el.dom;
346 if(!node || node.parentNode == el){
349 var p = node.parentNode;
351 if(p.parentNode == el){
360 onClick : function(e){
361 var item = this.findItemFromChild(e.getTarget());
363 var index = this.indexOf(item);
364 if(this.onItemClick(item, index, e) !== false){
365 this.fireEvent("click", this, index, item, e);
368 this.clearSelections();
373 onContextMenu : function(e){
374 var item = this.findItemFromChild(e.getTarget());
376 this.fireEvent("contextmenu", this, this.indexOf(item), item, e);
381 onDblClick : function(e){
382 var item = this.findItemFromChild(e.getTarget());
384 this.fireEvent("dblclick", this, this.indexOf(item), item, e);
388 onItemClick : function(item, index, e)
390 if(this.fireEvent("beforeclick", this, index, item, e) === false){
393 if (this.toggleSelect) {
394 var m = this.isSelected(item) ? 'unselect' : 'select';
397 _t[m](item, true, false);
400 if(this.multiSelect || this.singleSelect){
401 if(this.multiSelect && e.shiftKey && this.lastSelection){
402 this.select(this.getNodes(this.indexOf(this.lastSelection), index), false);
404 this.select(item, this.multiSelect && e.ctrlKey);
405 this.lastSelection = item;
413 * Get the number of selected nodes.
416 getSelectionCount : function(){
417 return this.selections.length;
421 * Get the currently selected nodes.
422 * @return {Array} An array of HTMLElements
424 getSelectedNodes : function(){
425 return this.selections;
429 * Get the indexes of the selected nodes.
432 getSelectedIndexes : function(){
433 var indexes = [], s = this.selections;
434 for(var i = 0, len = s.length; i < len; i++){
435 indexes.push(s[i].nodeIndex);
441 * Clear all selections
442 * @param {Boolean} suppressEvent (optional) true to skip firing of the selectionchange event
444 clearSelections : function(suppressEvent){
445 if(this.nodes && (this.multiSelect || this.singleSelect) && this.selections.length > 0){
446 this.cmp.elements = this.selections;
447 this.cmp.removeClass(this.selectedClass);
448 this.selections = [];
450 this.fireEvent("selectionchange", this, this.selections);
456 * Returns true if the passed node is selected
457 * @param {HTMLElement/Number} node The node or node index
460 isSelected : function(node){
461 var s = this.selections;
465 node = this.getNode(node);
466 return s.indexOf(node) !== -1;
471 * @param {Array/HTMLElement/String/Number} nodeInfo An HTMLElement template node, index of a template node, id of a template node or an array of any of those to select
472 * @param {Boolean} keepExisting (optional) true to keep existing selections
473 * @param {Boolean} suppressEvent (optional) true to skip firing of the selectionchange vent
475 select : function(nodeInfo, keepExisting, suppressEvent){
476 if(nodeInfo instanceof Array){
478 this.clearSelections(true);
480 for(var i = 0, len = nodeInfo.length; i < len; i++){
481 this.select(nodeInfo[i], true, true);
485 var node = this.getNode(nodeInfo);
486 if(!node || this.isSelected(node)){
487 return; // already selected.
490 this.clearSelections(true);
492 if(this.fireEvent("beforeselect", this, node, this.selections) !== false){
493 Roo.fly(node).addClass(this.selectedClass);
494 this.selections.push(node);
496 this.fireEvent("selectionchange", this, this.selections);
504 * @param {Array/HTMLElement/String/Number} nodeInfo An HTMLElement template node, index of a template node, id of a template node or an array of any of those to select
505 * @param {Boolean} keepExisting (optional) true IGNORED (for campatibility with select)
506 * @param {Boolean} suppressEvent (optional) true to skip firing of the selectionchange vent
508 unselect : function(nodeInfo, keepExisting, suppressEvent)
510 if(nodeInfo instanceof Array){
511 Roo.each(this.selections, function(s) {
512 this.unselect(s, nodeInfo);
516 var node = this.getNode(nodeInfo);
517 if(!node || !this.isSelected(node)){
518 Roo.log("not selected");
519 return; // not selected.
523 Roo.each(this.selections, function(s) {
525 Roo.fly(node).removeClass(this.selectedClass);
533 this.fireEvent("selectionchange", this, this.selections);
537 * Gets a template node.
538 * @param {HTMLElement/String/Number} nodeInfo An HTMLElement template node, index of a template node or the id of a template node
539 * @return {HTMLElement} The node or null if it wasn't found
541 getNode : function(nodeInfo){
542 if(typeof nodeInfo == "string"){
543 return document.getElementById(nodeInfo);
544 }else if(typeof nodeInfo == "number"){
545 return this.nodes[nodeInfo];
551 * Gets a range template nodes.
552 * @param {Number} startIndex
553 * @param {Number} endIndex
554 * @return {Array} An array of nodes
556 getNodes : function(start, end){
559 end = typeof end == "undefined" ? ns.length - 1 : end;
562 for(var i = start; i <= end; i++){
566 for(var i = start; i >= end; i--){
574 * Finds the index of the passed node
575 * @param {HTMLElement/String/Number} nodeInfo An HTMLElement template node, index of a template node or the id of a template node
576 * @return {Number} The index of the node or -1
578 indexOf : function(node){
579 node = this.getNode(node);
580 if(typeof node.nodeIndex == "number"){
581 return node.nodeIndex;
584 for(var i = 0, len = ns.length; i < len; i++){