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);
62 this.wrapEl = this.el.wrap().wrap();
63 ///this.el = this.wrapEla.appendChild(document.createElement("div"));
66 if(typeof(this.tpl) == "string"){
67 this.tpl = new Roo.Template(this.tpl);
69 // support xtype ctors..
70 this.tpl = new Roo.factory(this.tpl, Roo);
83 * Fires before a click is processed. Returns false to cancel the default action.
84 * @param {Roo.View} this
85 * @param {Number} index The index of the target node
86 * @param {HTMLElement} node The target node
87 * @param {Roo.EventObject} e The raw event object
92 * Fires when a template node is clicked.
93 * @param {Roo.View} this
94 * @param {Number} index The index of the target node
95 * @param {HTMLElement} node The target node
96 * @param {Roo.EventObject} e The raw event object
101 * Fires when a template node is double clicked.
102 * @param {Roo.View} this
103 * @param {Number} index The index of the target node
104 * @param {HTMLElement} node The target node
105 * @param {Roo.EventObject} e The raw event object
110 * Fires when a template node is right clicked.
111 * @param {Roo.View} this
112 * @param {Number} index The index of the target node
113 * @param {HTMLElement} node The target node
114 * @param {Roo.EventObject} e The raw event object
116 "contextmenu" : true,
118 * @event selectionchange
119 * Fires when the selected nodes change.
120 * @param {Roo.View} this
121 * @param {Array} selections Array of the selected nodes
123 "selectionchange" : true,
126 * @event beforeselect
127 * Fires before a selection is made. If any handlers return false, the selection is cancelled.
128 * @param {Roo.View} this
129 * @param {HTMLElement} node The node to be selected
130 * @param {Array} selections Array of currently selected nodes
132 "beforeselect" : true,
135 * Fires on every row to render, to allow you to change the data.
136 * @param {Roo.View} this
137 * @param {Object} data to be rendered (change this)
147 "click": this.onClick,
148 "dblclick": this.onDblClick,
149 "contextmenu": this.onContextMenu,
153 this.selections = [];
155 this.cmp = new Roo.CompositeElementLite([]);
157 this.store = Roo.factory(this.store, Roo.data);
158 this.setStore(this.store, true);
161 if ( this.footer && this.footer.xtype) {
163 var fctr = this.wrapEl.appendChild(document.createElement("div"));
165 this.footer.dataSource = this.store
166 this.footer.container = fctr;
167 this.footer = Roo.factory(this.footer, Roo);
168 fctr.insertFirst(this.el);
170 // this is a bit insane - as the paging toolbar seems to detach the el..
171 // dom.parentNode.parentNode.parentNode
172 // they get detached?
176 Roo.View.superclass.constructor.call(this);
181 Roo.extend(Roo.View, Roo.util.Observable, {
184 * @cfg {Roo.data.Store} store Data store to load data from.
189 * @cfg {String|Roo.Element} el The container element.
194 * @cfg {String|Roo.Template} tpl The template used by this View
198 * @cfg {String} dataName the named area of the template to use as the data area
199 * Works with domtemplates roo-name="name"
203 * @cfg {String} selectedClass The css class to add to selected nodes
205 selectedClass : "x-view-selected",
207 * @cfg {String} emptyText The empty text to show when nothing is loaded.
212 * @cfg {String} text to display on mask (default Loading)
216 * @cfg {Boolean} multiSelect Allow multiple selection
220 * @cfg {Boolean} singleSelect Allow single selection
225 * @cfg {Boolean} toggleSelect - selecting
227 toggleSelect : false,
230 * Returns the element this view is bound to.
231 * @return {Roo.Element}
240 * Refreshes the view. - called by datachanged on the store. - do not call directly.
242 refresh : function(){
248 // if we are using something like 'domtemplate', then
249 // the what gets used is:
250 // t.applySubtemplate(NAME, data, wrapping data..)
251 // the outer template then get' applied with
252 // the store 'extra data'
253 // and the body get's added to the
254 // roo-name="data" node?
255 // <span class='roo-tpl-{name}'></span> ?????
259 this.clearSelections();
262 var records = this.store.getRange();
263 if(records.length < 1) {
265 // is this valid?? = should it render a template??
267 this.el.update(this.emptyText);
272 this.el.update(t.apply(this.store.meta)); //????
273 el = this.el.child('.roo-tpl-' + this.dataName);
276 for(var i = 0, len = records.length; i < len; i++){
277 var data = this.prepareData(records[i].data, i, records[i]);
278 this.fireEvent("preparedata", this, data, i, records[i]);
279 html[html.length] = Roo.util.Format.trim(
281 t.applySubtemplate(this.dataName, data, this.store.meta) :
288 el.update(html.join(""));
289 this.nodes = el.dom.childNodes;
290 this.updateIndexes(0);
299 var records = this.store.getRange();
300 if(records.length < 1) {
302 // is this valid?? = should it render a template??
304 this.el.update(this.emptyText);
309 this.el.update(t.apply(this.store.meta)); //????
310 el = this.el.child('.roo-tpl-' + this.dataName);
313 for(var i = 0, len = records.length; i < len; i++){
314 var data = this.prepareData(records[i].data, i, records[i]);
315 this.fireEvent("preparedata", this, data, i, records[i]);
316 html[html.length] = Roo.util.Format.trim(
318 t.applySubtemplate(this.dataName, data, this.store.meta) :
325 el.update(html.join(""));
326 this.nodes = el.dom.childNodes;
327 this.updateIndexes(0);
331 * Function to override to reformat the data that is sent to
332 * the template for each node.
333 * DEPRICATED - use the preparedata event handler.
334 * @param {Array/Object} data The raw data (array of colData for a data model bound view or
335 * a JSON object for an UpdateManager bound view).
337 prepareData : function(data, index, record)
339 this.fireEvent("preparedata", this, data, index, record);
343 onUpdate : function(ds, record){
344 this.clearSelections();
345 var index = this.store.indexOf(record);
346 var n = this.nodes[index];
347 this.tpl.insertBefore(n, this.prepareData(record.data, index, record));
348 n.parentNode.removeChild(n);
349 this.updateIndexes(index, index);
355 onAdd : function(ds, records, index)
357 this.clearSelections();
358 if(this.nodes.length == 0){
362 var n = this.nodes[index];
363 for(var i = 0, len = records.length; i < len; i++){
364 var d = this.prepareData(records[i].data, i, records[i]);
366 this.tpl.insertBefore(n, d);
369 this.tpl.append(this.el, d);
372 this.updateIndexes(index);
375 onRemove : function(ds, record, index){
376 this.clearSelections();
377 var el = this.dataName ?
378 this.el.child('.roo-tpl-' + this.dataName) :
380 el.dom.removeChild(this.nodes[index]);
381 this.updateIndexes(index);
385 * Refresh an individual node.
386 * @param {Number} index
388 refreshNode : function(index){
389 this.onUpdate(this.store, this.store.getAt(index));
392 updateIndexes : function(startIndex, endIndex){
394 startIndex = startIndex || 0;
395 endIndex = endIndex || ns.length - 1;
396 for(var i = startIndex; i <= endIndex; i++){
402 * Changes the data store this view uses and refresh the view.
403 * @param {Store} store
405 setStore : function(store, initial){
406 if(!initial && this.store){
407 this.store.un("datachanged", this.refresh);
408 this.store.un("add", this.onAdd);
409 this.store.un("remove", this.onRemove);
410 this.store.un("update", this.onUpdate);
411 this.store.un("clear", this.refresh);
412 this.store.un("beforeload", this.onBeforeLoad);
413 this.store.un("load", this.onLoad);
414 this.store.un("loadexception", this.onLoad);
418 store.on("datachanged", this.refresh, this);
419 store.on("add", this.onAdd, this);
420 store.on("remove", this.onRemove, this);
421 store.on("update", this.onUpdate, this);
422 store.on("clear", this.refresh, this);
423 store.on("beforeload", this.onBeforeLoad, this);
424 store.on("load", this.onLoad, this);
425 store.on("loadexception", this.onLoad, this);
433 * onbeforeLoad - masks the loading area.
436 onBeforeLoad : function()
439 this.el.mask(this.mask ? this.mask : "Loading" );
448 * Returns the template node the passed child belongs to or null if it doesn't belong to one.
449 * @param {HTMLElement} node
450 * @return {HTMLElement} The template node
452 findItemFromChild : function(node){
453 var el = this.dataName ?
454 this.el.child('.roo-tpl-' + this.dataName,true) :
457 if(!node || node.parentNode == el){
460 var p = node.parentNode;
462 if(p.parentNode == el){
471 onClick : function(e){
472 var item = this.findItemFromChild(e.getTarget());
474 var index = this.indexOf(item);
475 if(this.onItemClick(item, index, e) !== false){
476 this.fireEvent("click", this, index, item, e);
479 this.clearSelections();
484 onContextMenu : function(e){
485 var item = this.findItemFromChild(e.getTarget());
487 this.fireEvent("contextmenu", this, this.indexOf(item), item, e);
492 onDblClick : function(e){
493 var item = this.findItemFromChild(e.getTarget());
495 this.fireEvent("dblclick", this, this.indexOf(item), item, e);
499 onItemClick : function(item, index, e)
501 if(this.fireEvent("beforeclick", this, index, item, e) === false){
504 if (this.toggleSelect) {
505 var m = this.isSelected(item) ? 'unselect' : 'select';
508 _t[m](item, true, false);
511 if(this.multiSelect || this.singleSelect){
512 if(this.multiSelect && e.shiftKey && this.lastSelection){
513 this.select(this.getNodes(this.indexOf(this.lastSelection), index), false);
515 this.select(item, this.multiSelect && e.ctrlKey);
516 this.lastSelection = item;
524 * Get the number of selected nodes.
527 getSelectionCount : function(){
528 return this.selections.length;
532 * Get the currently selected nodes.
533 * @return {Array} An array of HTMLElements
535 getSelectedNodes : function(){
536 return this.selections;
540 * Get the indexes of the selected nodes.
543 getSelectedIndexes : function(){
544 var indexes = [], s = this.selections;
545 for(var i = 0, len = s.length; i < len; i++){
546 indexes.push(s[i].nodeIndex);
552 * Clear all selections
553 * @param {Boolean} suppressEvent (optional) true to skip firing of the selectionchange event
555 clearSelections : function(suppressEvent){
556 if(this.nodes && (this.multiSelect || this.singleSelect) && this.selections.length > 0){
557 this.cmp.elements = this.selections;
558 this.cmp.removeClass(this.selectedClass);
559 this.selections = [];
561 this.fireEvent("selectionchange", this, this.selections);
567 * Returns true if the passed node is selected
568 * @param {HTMLElement/Number} node The node or node index
571 isSelected : function(node){
572 var s = this.selections;
576 node = this.getNode(node);
577 return s.indexOf(node) !== -1;
582 * @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
583 * @param {Boolean} keepExisting (optional) true to keep existing selections
584 * @param {Boolean} suppressEvent (optional) true to skip firing of the selectionchange vent
586 select : function(nodeInfo, keepExisting, suppressEvent){
587 if(nodeInfo instanceof Array){
589 this.clearSelections(true);
591 for(var i = 0, len = nodeInfo.length; i < len; i++){
592 this.select(nodeInfo[i], true, true);
596 var node = this.getNode(nodeInfo);
597 if(!node || this.isSelected(node)){
598 return; // already selected.
601 this.clearSelections(true);
603 if(this.fireEvent("beforeselect", this, node, this.selections) !== false){
604 Roo.fly(node).addClass(this.selectedClass);
605 this.selections.push(node);
607 this.fireEvent("selectionchange", this, this.selections);
615 * @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
616 * @param {Boolean} keepExisting (optional) true IGNORED (for campatibility with select)
617 * @param {Boolean} suppressEvent (optional) true to skip firing of the selectionchange vent
619 unselect : function(nodeInfo, keepExisting, suppressEvent)
621 if(nodeInfo instanceof Array){
622 Roo.each(this.selections, function(s) {
623 this.unselect(s, nodeInfo);
627 var node = this.getNode(nodeInfo);
628 if(!node || !this.isSelected(node)){
629 Roo.log("not selected");
630 return; // not selected.
634 Roo.each(this.selections, function(s) {
636 Roo.fly(node).removeClass(this.selectedClass);
644 this.fireEvent("selectionchange", this, this.selections);
648 * Gets a template node.
649 * @param {HTMLElement/String/Number} nodeInfo An HTMLElement template node, index of a template node or the id of a template node
650 * @return {HTMLElement} The node or null if it wasn't found
652 getNode : function(nodeInfo){
653 if(typeof nodeInfo == "string"){
654 return document.getElementById(nodeInfo);
655 }else if(typeof nodeInfo == "number"){
656 return this.nodes[nodeInfo];
662 * Gets a range template nodes.
663 * @param {Number} startIndex
664 * @param {Number} endIndex
665 * @return {Array} An array of nodes
667 getNodes : function(start, end){
670 end = typeof end == "undefined" ? ns.length - 1 : end;
673 for(var i = start; i <= end; i++){
677 for(var i = start; i >= end; i--){
685 * Finds the index of the passed node
686 * @param {HTMLElement/String/Number} nodeInfo An HTMLElement template node, index of a template node or the id of a template node
687 * @return {Number} The index of the node or -1
689 indexOf : function(node){
690 node = this.getNode(node);
691 if(typeof node.nodeIndex == "number"){
692 return node.nodeIndex;
695 for(var i = 0, len = ns.length; i < len; i++){