www.gusucode.com > 一个基于extjs的强大聊天插件源码程序 > 一个基于extjs的强大聊天插件/extjame/ext-jame/js/ext2/source/widgets/grid/GroupingView.js
/*
* Ext JS Library 2.0.2
* Copyright(c) 2006-2008, Ext JS, LLC.
* licensing@extjs.com
*
* http://extjs.com/license
*/
/**
* @class Ext.grid.GroupingView
* @extends Ext.grid.GridView
* Adds the ability for single level grouping to the grid.
*<pre><code>var grid = new Ext.grid.GridPanel({
// A groupingStore is required for a GroupingView
store: new Ext.data.GroupingStore({
reader: reader,
data: xg.dummyData,
sortInfo:{field: 'company', direction: "ASC"},
groupField:'industry'
}),
columns: [
{id:'company',header: "Company", width: 60, sortable: true, dataIndex: 'company'},
{header: "Price", width: 20, sortable: true, renderer: Ext.util.Format.usMoney, dataIndex: 'price'},
{header: "Change", width: 20, sortable: true, dataIndex: 'change', renderer: Ext.util.Format.usMoney},
{header: "Industry", width: 20, sortable: true, dataIndex: 'industry'},
{header: "Last Updated", width: 20, sortable: true, renderer: Ext.util.Format.dateRenderer('m/d/Y'), dataIndex: 'lastChange'}
],
view: new Ext.grid.GroupingView({
forceFit:true,
// custom grouping text template to display the number of items per group
groupTextTpl: '{text} ({[values.rs.length]} {[values.rs.length > 1 ? "Items" : "Item"]})'
}),
frame:true,
width: 700,
height: 450,
collapsible: true,
animCollapse: false,
title: 'Grouping Example',
iconCls: 'icon-grid',
renderTo: document.body
});</code></pre>
* @constructor
* @param {Object} config
*/
Ext.grid.GroupingView = Ext.extend(Ext.grid.GridView, {
/**
* @cfg {Boolean} hideGroupedColumn True to hide the column that is currently grouped
*/
hideGroupedColumn:false,
/**
* @cfg {Boolean} showGroupName True to display the name for each set of grouped rows (defaults to true)
*/
showGroupName:true,
/**
* @cfg {Boolean} startCollapsed True to start all groups collapsed
*/
startCollapsed:false,
/**
* @cfg {Boolean} enableGrouping False to disable grouping functionality (defaults to true)
*/
enableGrouping:true,
/**
* @cfg {Boolean} enableGroupingMenu True to enable the grouping control in the column menu
*/
enableGroupingMenu:true,
/**
* @cfg {Boolean} enableNoGroups True to allow the user to turn off grouping
*/
enableNoGroups:true,
/**
* @cfg {String} emptyGroupText The text to display when there is an empty group value
*/
emptyGroupText : '(None)',
/**
* @cfg {Boolean} ignoreAdd True to skip refreshing the view when new rows are added (defaults to false)
*/
ignoreAdd: false,
/**
* @cfg {String} groupTextTpl The template used to render the group header. This is used to
* format an object which contains the following properties:
* <div class="mdetail-params"><ul>
* <li><b>group</b> : String<p class="sub-desc">The <i>rendered</i> value of the group field.
* By default this is the unchanged value of the group field. If a {@link #groupRenderer}
* is specified, it is the result of a call to that.</p></li>
* <li><b>gvalue</b> : Object<p class="sub-desc">The <i>raw</i> value of the group field.</p></li>
* <li><b>text</b> : String<p class="sub-desc">The configured {@link #header} (If
* {@link #showGroupName} is true) plus the <i>rendered</i>group field value.</p></li>
* <li><b>groupId</b> : String<p class="sub-desc">A unique, generated ID which is applied to the
* View Element which contains the group.</p></li>
* <li><b>startRow</b> : Number<p class="sub-desc">The row index of the Record which caused group change.</p></li>
* <li><b>rs</b> : Array<p class="sub-desc">.Contains a single element: The Record providing the data
* for the row which caused group change.</p></li>
* <li><b>cls</b> : String<p class="sub-desc">The generated class name string to apply to the group header Element.</p></li>
* <li><b>style</b> : String<p class="sub-desc">The inline style rules to apply to the group header Element.</p></li>
* </ul></div></p>
* See {@link Ext.XTemplate} for information on how to format data using a template.
*/
groupTextTpl : '{text}',
/**
* @cfg {Function} groupRenderer The function used to format the grouping field value for
* display in the group header. Should return a string value. This takes the following parameters:
* <div class="mdetail-params"><ul>
* <li><b>v</b> : Object<p class="sub-desc">The new value of the group field.</p></li>
* <li><b>unused</b> : undefined<p class="sub-desc">Unused parameter.</p></li>
* <li><b>r</b> : Ext.data.Record<p class="sub-desc">The Record providing the data
* for the row which caused group change.</p></li>
* <li><b>rowIndex</b> : Number<p class="sub-desc">The row index of the Record which caused group change.</p></li>
* <li><b>colIndex</b> : Number<p class="sub-desc">The column index of the group field.</p></li>
* <li><b>ds</b> : Ext.data.Store<p class="sub-desc">The Store which is providing the data Model.</p></li>
* </ul></div></p>
*/
/**
* @cfg {String} header The text with which to prefix the group field value in the group header line.
*/
// private
gidSeed : 1000,
// private
initTemplates : function(){
Ext.grid.GroupingView.superclass.initTemplates.call(this);
this.state = {};
var sm = this.grid.getSelectionModel();
sm.on(sm.selectRow ? 'beforerowselect' : 'beforecellselect',
this.onBeforeRowSelect, this);
if(!this.startGroup){
this.startGroup = new Ext.XTemplate(
'<div id="{groupId}" class="x-grid-group {cls}">',
'<div id="{groupId}-hd" class="x-grid-group-hd" style="{style}"><div>', this.groupTextTpl ,'</div></div>',
'<div id="{groupId}-bd" class="x-grid-group-body">'
);
}
this.startGroup.compile();
this.endGroup = '</div></div>';
},
// private
findGroup : function(el){
return Ext.fly(el).up('.x-grid-group', this.mainBody.dom);
},
// private
getGroups : function(){
return this.hasRows() ? this.mainBody.dom.childNodes : [];
},
// private
onAdd : function(){
if(this.enableGrouping && !this.ignoreAdd){
var ss = this.getScrollState();
this.refresh();
this.restoreScroll(ss);
}else if(!this.enableGrouping){
Ext.grid.GroupingView.superclass.onAdd.apply(this, arguments);
}
},
// private
onRemove : function(ds, record, index, isUpdate){
Ext.grid.GroupingView.superclass.onRemove.apply(this, arguments);
var g = document.getElementById(record._groupId);
if(g && g.childNodes[1].childNodes.length < 1){
Ext.removeNode(g);
}
this.applyEmptyText();
},
// private
refreshRow : function(record){
if(this.ds.getCount()==1){
this.refresh();
}else{
this.isUpdating = true;
Ext.grid.GroupingView.superclass.refreshRow.apply(this, arguments);
this.isUpdating = false;
}
},
// private
beforeMenuShow : function(){
var field = this.getGroupField();
var g = this.hmenu.items.get('groupBy');
if(g){
g.setDisabled(this.cm.config[this.hdCtxIndex].groupable === false);
}
var s = this.hmenu.items.get('showGroups');
if(s){
if (!!field){ // Disable the 'showGroups' checkbox if it is not checked and the field is not groupable
s.setDisabled(this.cm.config[this.hdCtxIndex].groupable === false)
}
s.setChecked(!!field);
}
},
// private
renderUI : function(){
Ext.grid.GroupingView.superclass.renderUI.call(this);
this.mainBody.on('mousedown', this.interceptMouse, this);
if(this.enableGroupingMenu && this.hmenu){
this.hmenu.add('-',{
id:'groupBy',
text: this.groupByText,
handler: this.onGroupByClick,
scope: this,
iconCls:'x-group-by-icon'
});
if(this.enableNoGroups){
this.hmenu.add({
id:'showGroups',
text: this.showGroupsText,
checked: true,
checkHandler: this.onShowGroupsClick,
scope: this
});
}
this.hmenu.on('beforeshow', this.beforeMenuShow, this);
}
},
// private
onGroupByClick : function(){
this.grid.store.groupBy(this.cm.getDataIndex(this.hdCtxIndex));
this.beforeMenuShow(); // Make sure the checkboxes get properly set when changing groups
},
// private
onShowGroupsClick : function(mi, checked){
if(checked){
this.onGroupByClick();
}else{
this.grid.store.clearGrouping();
}
},
/**
* Toggles the specified group if no value is passed, otherwise sets the expanded state of the group to the value passed.
* @param {String} groupId The groupId assigned to the group (see getGroupId)
* @param {Boolean} expanded (optional)
*/
toggleGroup : function(group, expanded){
this.grid.stopEditing(true);
group = Ext.getDom(group);
var gel = Ext.fly(group);
expanded = expanded !== undefined ?
expanded : gel.hasClass('x-grid-group-collapsed');
this.state[gel.dom.id] = expanded;
gel[expanded ? 'removeClass' : 'addClass']('x-grid-group-collapsed');
},
/**
* Toggles all groups if no value is passed, otherwise sets the expanded state of all groups to the value passed.
* @param {Boolean} expanded (optional)
*/
toggleAllGroups : function(expanded){
var groups = this.getGroups();
for(var i = 0, len = groups.length; i < len; i++){
this.toggleGroup(groups[i], expanded);
}
},
/**
* Expands all grouped rows.
*/
expandAllGroups : function(){
this.toggleAllGroups(true);
},
/**
* Collapses all grouped rows.
*/
collapseAllGroups : function(){
this.toggleAllGroups(false);
},
// private
interceptMouse : function(e){
var hd = e.getTarget('.x-grid-group-hd', this.mainBody);
if(hd){
e.stopEvent();
this.toggleGroup(hd.parentNode);
}
},
// private
getGroup : function(v, r, groupRenderer, rowIndex, colIndex, ds){
var g = groupRenderer ? groupRenderer(v, {}, r, rowIndex, colIndex, ds) : String(v);
if(g === ''){
g = this.cm.config[colIndex].emptyGroupText || this.emptyGroupText;
}
return g;
},
// private
getGroupField : function(){
return this.grid.store.getGroupState();
},
// private
renderRows : function(){
var groupField = this.getGroupField();
var eg = !!groupField;
// if they turned off grouping and the last grouped field is hidden
if(this.hideGroupedColumn) {
var colIndex = this.cm.findColumnIndex(groupField);
if(!eg && this.lastGroupField !== undefined) {
this.mainBody.update('');
this.cm.setHidden(this.cm.findColumnIndex(this.lastGroupField), false);
delete this.lastGroupField;
}else if (eg && this.lastGroupField === undefined) {
this.lastGroupField = groupField;
this.cm.setHidden(colIndex, true);
}else if (eg && this.lastGroupField !== undefined && groupField !== this.lastGroupField) {
this.mainBody.update('');
var oldIndex = this.cm.findColumnIndex(this.lastGroupField);
this.cm.setHidden(oldIndex, false);
this.lastGroupField = groupField;
this.cm.setHidden(colIndex, true);
}
}
return Ext.grid.GroupingView.superclass.renderRows.apply(
this, arguments);
},
// private
doRender : function(cs, rs, ds, startRow, colCount, stripe){
if(rs.length < 1){
return '';
}
var groupField = this.getGroupField();
var colIndex = this.cm.findColumnIndex(groupField);
this.enableGrouping = !!groupField;
if(!this.enableGrouping || this.isUpdating){
return Ext.grid.GroupingView.superclass.doRender.apply(
this, arguments);
}
var gstyle = 'width:'+this.getTotalWidth()+';';
var gidPrefix = this.grid.getGridEl().id;
var cfg = this.cm.config[colIndex];
var groupRenderer = cfg.groupRenderer || cfg.renderer;
var prefix = this.showGroupName ?
(cfg.groupName || cfg.header)+': ' : '';
var groups = [], curGroup, i, len, gid;
for(i = 0, len = rs.length; i < len; i++){
var rowIndex = startRow + i;
var r = rs[i],
gvalue = r.data[groupField],
g = this.getGroup(gvalue, r, groupRenderer, rowIndex, colIndex, ds);
if(!curGroup || curGroup.group != g){
gid = gidPrefix + '-gp-' + groupField + '-' + Ext.util.Format.htmlEncode(g);
// if state is defined use it, however state is in terms of expanded
// so negate it, otherwise use the default.
var isCollapsed = typeof this.state[gid] !== 'undefined' ? !this.state[gid] : this.startCollapsed;
var gcls = isCollapsed ? 'x-grid-group-collapsed' : '';
curGroup = {
group: g,
gvalue: gvalue,
text: prefix + g,
groupId: gid,
startRow: rowIndex,
rs: [r],
cls: gcls,
style: gstyle
};
groups.push(curGroup);
}else{
curGroup.rs.push(r);
}
r._groupId = gid;
}
var buf = [];
for(i = 0, len = groups.length; i < len; i++){
var g = groups[i];
this.doGroupStart(buf, g, cs, ds, colCount);
buf[buf.length] = Ext.grid.GroupingView.superclass.doRender.call(
this, cs, g.rs, ds, g.startRow, colCount, stripe);
this.doGroupEnd(buf, g, cs, ds, colCount);
}
return buf.join('');
},
/**
* Dynamically tries to determine the groupId of a specific value
* @param {String} value
* @return {String} The group id
*/
getGroupId : function(value){
var gidPrefix = this.grid.getGridEl().id;
var groupField = this.getGroupField();
var colIndex = this.cm.findColumnIndex(groupField);
var cfg = this.cm.config[colIndex];
var groupRenderer = cfg.groupRenderer || cfg.renderer;
var gtext = this.getGroup(value, {data:{}}, groupRenderer, 0, colIndex, this.ds);
return gidPrefix + '-gp-' + groupField + '-' + Ext.util.Format.htmlEncode(value);
},
// private
doGroupStart : function(buf, g, cs, ds, colCount){
buf[buf.length] = this.startGroup.apply(g);
},
// private
doGroupEnd : function(buf, g, cs, ds, colCount){
buf[buf.length] = this.endGroup;
},
// private
getRows : function(){
if(!this.enableGrouping){
return Ext.grid.GroupingView.superclass.getRows.call(this);
}
var r = [];
var g, gs = this.getGroups();
for(var i = 0, len = gs.length; i < len; i++){
g = gs[i].childNodes[1].childNodes;
for(var j = 0, jlen = g.length; j < jlen; j++){
r[r.length] = g[j];
}
}
return r;
},
// private
updateGroupWidths : function(){
if(!this.enableGrouping || !this.hasRows()){
return;
}
var tw = Math.max(this.cm.getTotalWidth(), this.el.dom.offsetWidth-this.scrollOffset) +'px';
var gs = this.getGroups();
for(var i = 0, len = gs.length; i < len; i++){
gs[i].firstChild.style.width = tw;
}
},
// private
onColumnWidthUpdated : function(col, w, tw){
this.updateGroupWidths();
},
// private
onAllColumnWidthsUpdated : function(ws, tw){
this.updateGroupWidths();
},
// private
onColumnHiddenUpdated : function(col, hidden, tw){
this.updateGroupWidths();
},
// private
onLayout : function(){
this.updateGroupWidths();
},
// private
onBeforeRowSelect : function(sm, rowIndex){
if(!this.enableGrouping){
return;
}
var row = this.getRow(rowIndex);
if(row && !row.offsetParent){
var g = this.findGroup(row);
this.toggleGroup(g, true);
}
},
/**
* @cfg {String} groupByText Text displayed in the grid header menu for grouping by a column
* (defaults to 'Group By This Field').
*/
groupByText: 'Group By This Field',
/**
* @cfg {String} showGroupsText Text displayed in the grid header for enabling/disabling grouping
* (defaults to 'Show in Groups').
*/
showGroupsText: 'Show in Groups'
});
// private
Ext.grid.GroupingView.GROUP_ID = 1000;