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 * @cfg {Boolean} tickable - selecting
235 * Returns the element this view is bound to.
236 * @return {Roo.Element}
245 * Refreshes the view. - called by datachanged on the store. - do not call directly.
247 refresh : function(){
251 // if we are using something like 'domtemplate', then
252 // the what gets used is:
253 // t.applySubtemplate(NAME, data, wrapping data..)
254 // the outer template then get' applied with
255 // the store 'extra data'
256 // and the body get's added to the
257 // roo-name="data" node?
258 // <span class='roo-tpl-{name}'></span> ?????
262 this.clearSelections();
265 var records = this.store.getRange();
266 if(records.length < 1) {
268 // is this valid?? = should it render a template??
270 this.el.update(this.emptyText);
275 this.el.update(t.apply(this.store.meta)); //????
276 el = this.el.child('.roo-tpl-' + this.dataName);
279 for(var i = 0, len = records.length; i < len; i++){
280 var data = this.prepareData(records[i].data, i, records[i]);
282 this.fireEvent("preparedata", this, data, i, records[i]);
283 html[html.length] = Roo.util.Format.trim(
285 t.applySubtemplate(this.dataName, data, this.store.meta) :
292 el.update(html.join(""));
293 this.nodes = el.dom.childNodes;
294 this.updateIndexes(0);
299 * Function to override to reformat the data that is sent to
300 * the template for each node.
301 * DEPRICATED - use the preparedata event handler.
302 * @param {Array/Object} data The raw data (array of colData for a data model bound view or
303 * a JSON object for an UpdateManager bound view).
305 prepareData : function(data, index, record)
307 this.fireEvent("preparedata", this, data, index, record);
311 onUpdate : function(ds, record){
312 Roo.log('on update');
313 this.clearSelections();
314 var index = this.store.indexOf(record);
315 var n = this.nodes[index];
316 this.tpl.insertBefore(n, this.prepareData(record.data, index, record));
317 n.parentNode.removeChild(n);
318 this.updateIndexes(index, index);
324 onAdd : function(ds, records, index)
326 Roo.log(['on Add', ds, records, index] );
327 this.clearSelections();
328 if(this.nodes.length == 0){
332 var n = this.nodes[index];
333 for(var i = 0, len = records.length; i < len; i++){
334 var d = this.prepareData(records[i].data, i, records[i]);
336 this.tpl.insertBefore(n, d);
339 this.tpl.append(this.el, d);
342 this.updateIndexes(index);
345 onRemove : function(ds, record, index){
347 this.clearSelections();
348 var el = this.dataName ?
349 this.el.child('.roo-tpl-' + this.dataName) :
352 el.dom.removeChild(this.nodes[index]);
353 this.updateIndexes(index);
357 * Refresh an individual node.
358 * @param {Number} index
360 refreshNode : function(index){
361 this.onUpdate(this.store, this.store.getAt(index));
364 updateIndexes : function(startIndex, endIndex){
366 startIndex = startIndex || 0;
367 endIndex = endIndex || ns.length - 1;
368 for(var i = startIndex; i <= endIndex; i++){
374 * Changes the data store this view uses and refresh the view.
375 * @param {Store} store
377 setStore : function(store, initial){
378 if(!initial && this.store){
379 this.store.un("datachanged", this.refresh);
380 this.store.un("add", this.onAdd);
381 this.store.un("remove", this.onRemove);
382 this.store.un("update", this.onUpdate);
383 this.store.un("clear", this.refresh);
384 this.store.un("beforeload", this.onBeforeLoad);
385 this.store.un("load", this.onLoad);
386 this.store.un("loadexception", this.onLoad);
390 store.on("datachanged", this.refresh, this);
391 store.on("add", this.onAdd, this);
392 store.on("remove", this.onRemove, this);
393 store.on("update", this.onUpdate, this);
394 store.on("clear", this.refresh, this);
395 store.on("beforeload", this.onBeforeLoad, this);
396 store.on("load", this.onLoad, this);
397 store.on("loadexception", this.onLoad, this);
405 * onbeforeLoad - masks the loading area.
408 onBeforeLoad : function(store,opts)
410 Roo.log('onBeforeLoad');
414 this.el.mask(this.mask ? this.mask : "Loading" );
423 * Returns the template node the passed child belongs to or null if it doesn't belong to one.
424 * @param {HTMLElement} node
425 * @return {HTMLElement} The template node
427 findItemFromChild : function(node){
428 var el = this.dataName ?
429 this.el.child('.roo-tpl-' + this.dataName,true) :
432 if(!node || node.parentNode == el){
435 var p = node.parentNode;
437 if(p.parentNode == el){
446 onClick : function(e){
447 var item = this.findItemFromChild(e.getTarget());
449 var index = this.indexOf(item);
450 if(this.onItemClick(item, index, e) !== false){
451 this.fireEvent("click", this, index, item, e);
454 this.clearSelections();
459 onContextMenu : function(e){
460 var item = this.findItemFromChild(e.getTarget());
462 this.fireEvent("contextmenu", this, this.indexOf(item), item, e);
467 onDblClick : function(e){
468 var item = this.findItemFromChild(e.getTarget());
470 this.fireEvent("dblclick", this, this.indexOf(item), item, e);
474 onItemClick : function(item, index, e)
476 if(this.fireEvent("beforeclick", this, index, item, e) === false){
479 if (this.toggleSelect) {
480 var m = this.isSelected(item) ? 'unselect' : 'select';
483 _t[m](item, true, false);
486 if(this.multiSelect || this.singleSelect){
487 if(this.multiSelect && e.shiftKey && this.lastSelection){
488 this.select(this.getNodes(this.indexOf(this.lastSelection), index), false);
490 this.select(item, this.multiSelect && e.ctrlKey);
491 this.lastSelection = item;
503 * Get the number of selected nodes.
506 getSelectionCount : function(){
507 return this.selections.length;
511 * Get the currently selected nodes.
512 * @return {Array} An array of HTMLElements
514 getSelectedNodes : function(){
515 return this.selections;
519 * Get the indexes of the selected nodes.
522 getSelectedIndexes : function(){
523 var indexes = [], s = this.selections;
524 for(var i = 0, len = s.length; i < len; i++){
525 indexes.push(s[i].nodeIndex);
531 * Clear all selections
532 * @param {Boolean} suppressEvent (optional) true to skip firing of the selectionchange event
534 clearSelections : function(suppressEvent){
535 if(this.nodes && (this.multiSelect || this.singleSelect) && this.selections.length > 0){
536 this.cmp.elements = this.selections;
537 this.cmp.removeClass(this.selectedClass);
538 this.selections = [];
540 this.fireEvent("selectionchange", this, this.selections);
546 * Returns true if the passed node is selected
547 * @param {HTMLElement/Number} node The node or node index
550 isSelected : function(node){
551 var s = this.selections;
555 node = this.getNode(node);
556 return s.indexOf(node) !== -1;
561 * @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
562 * @param {Boolean} keepExisting (optional) true to keep existing selections
563 * @param {Boolean} suppressEvent (optional) true to skip firing of the selectionchange vent
565 select : function(nodeInfo, keepExisting, suppressEvent){
566 if(nodeInfo instanceof Array){
568 this.clearSelections(true);
570 for(var i = 0, len = nodeInfo.length; i < len; i++){
571 this.select(nodeInfo[i], true, true);
575 var node = this.getNode(nodeInfo);
576 if(!node || this.isSelected(node)){
577 return; // already selected.
580 this.clearSelections(true);
582 if(this.fireEvent("beforeselect", this, node, this.selections) !== false){
583 Roo.fly(node).addClass(this.selectedClass);
584 this.selections.push(node);
586 this.fireEvent("selectionchange", this, this.selections);
594 * @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
595 * @param {Boolean} keepExisting (optional) true IGNORED (for campatibility with select)
596 * @param {Boolean} suppressEvent (optional) true to skip firing of the selectionchange vent
598 unselect : function(nodeInfo, keepExisting, suppressEvent)
600 if(nodeInfo instanceof Array){
601 Roo.each(this.selections, function(s) {
602 this.unselect(s, nodeInfo);
606 var node = this.getNode(nodeInfo);
607 if(!node || !this.isSelected(node)){
608 Roo.log("not selected");
609 return; // not selected.
613 Roo.each(this.selections, function(s) {
615 Roo.fly(node).removeClass(this.selectedClass);
623 this.fireEvent("selectionchange", this, this.selections);
627 * Gets a template node.
628 * @param {HTMLElement/String/Number} nodeInfo An HTMLElement template node, index of a template node or the id of a template node
629 * @return {HTMLElement} The node or null if it wasn't found
631 getNode : function(nodeInfo){
632 if(typeof nodeInfo == "string"){
633 return document.getElementById(nodeInfo);
634 }else if(typeof nodeInfo == "number"){
635 return this.nodes[nodeInfo];
641 * Gets a range template nodes.
642 * @param {Number} startIndex
643 * @param {Number} endIndex
644 * @return {Array} An array of nodes
646 getNodes : function(start, end){
649 end = typeof end == "undefined" ? ns.length - 1 : end;
652 for(var i = start; i <= end; i++){
656 for(var i = start; i >= end; i--){
664 * Finds the index of the passed node
665 * @param {HTMLElement/String/Number} nodeInfo An HTMLElement template node, index of a template node or the id of a template node
666 * @return {Number} The index of the node or -1
668 indexOf : function(node){
669 node = this.getNode(node);
670 if(typeof node.nodeIndex == "number"){
671 return node.nodeIndex;
674 for(var i = 0, len = ns.length; i < len; i++){