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<pre class="prettyprint lang-js">/*!
* Ext JS Library 3.3.1
* Copyright(c) 2006-2010 Sencha Inc.
* licensing@sencha.com
* http://www.sencha.com/license
*/
Ext.ns('Ext.ux.grid');
/**
* @class Ext.ux.grid.BufferView
* @extends Ext.grid.GridView
* A custom GridView which renders rows on an as-needed basis.
*/
Ext.ux.grid.BufferView = Ext.extend(Ext.grid.GridView, {
<div id="cfg-Ext.ux.grid.BufferView-rowHeight"></div>/**
* @cfg {Number} rowHeight
* The height of a row in the grid.
*/
rowHeight: 19,
<div id="cfg-Ext.ux.grid.BufferView-borderHeight"></div>/**
* @cfg {Number} borderHeight
* The combined height of border-top and border-bottom of a row.
*/
borderHeight: 2,
<div id="cfg-Ext.ux.grid.BufferView-scrollDelay"></div>/**
* @cfg {Boolean/Number} scrollDelay
* The number of milliseconds before rendering rows out of the visible
* viewing area. Defaults to 100. Rows will render immediately with a config
* of false.
*/
scrollDelay: 100,
<div id="cfg-Ext.ux.grid.BufferView-cacheSize"></div>/**
* @cfg {Number} cacheSize
* The number of rows to look forward and backwards from the currently viewable
* area. The cache applies only to rows that have been rendered already.
*/
cacheSize: 20,
<div id="cfg-Ext.ux.grid.BufferView-cleanDelay"></div>/**
* @cfg {Number} cleanDelay
* The number of milliseconds to buffer cleaning of extra rows not in the
* cache.
*/
cleanDelay: 500,
initTemplates : function(){
Ext.ux.grid.BufferView.superclass.initTemplates.call(this);
var ts = this.templates;
// empty div to act as a place holder for a row
ts.rowHolder = new Ext.Template(
'<div class="x-grid3-row {alt}" style="{tstyle}"></div>'
);
ts.rowHolder.disableFormats = true;
ts.rowHolder.compile();
ts.rowBody = new Ext.Template(
'<table class="x-grid3-row-table" border="0" cellspacing="0" cellpadding="0" style="{tstyle}">',
'<tbody><tr>{cells}</tr>',
(this.enableRowBody ? '<tr class="x-grid3-row-body-tr" style="{bodyStyle}"><td colspan="{cols}" class="x-grid3-body-cell" tabIndex="0" hidefocus="on"><div class="x-grid3-row-body">{body}</div></td></tr>' : ''),
'</tbody></table>'
);
ts.rowBody.disableFormats = true;
ts.rowBody.compile();
},
getStyleRowHeight : function(){
return Ext.isBorderBox ? (this.rowHeight + this.borderHeight) : this.rowHeight;
},
getCalculatedRowHeight : function(){
return this.rowHeight + this.borderHeight;
},
getVisibleRowCount : function(){
var rh = this.getCalculatedRowHeight(),
visibleHeight = this.scroller.dom.clientHeight;
return (visibleHeight < 1) ? 0 : Math.ceil(visibleHeight / rh);
},
getVisibleRows: function(){
var count = this.getVisibleRowCount(),
sc = this.scroller.dom.scrollTop,
start = (sc === 0 ? 0 : Math.floor(sc/this.getCalculatedRowHeight())-1);
return {
first: Math.max(start, 0),
last: Math.min(start + count + 2, this.ds.getCount()-1)
};
},
doRender : function(cs, rs, ds, startRow, colCount, stripe, onlyBody){
var ts = this.templates,
ct = ts.cell,
rt = ts.row,
rb = ts.rowBody,
last = colCount-1,
rh = this.getStyleRowHeight(),
vr = this.getVisibleRows(),
tstyle = 'width:'+this.getTotalWidth()+';height:'+rh+'px;',
// buffers
buf = [],
cb,
c,
p = {},
rp = {tstyle: tstyle},
r;
for (var j = 0, len = rs.length; j < len; j++) {
r = rs[j]; cb = [];
var rowIndex = (j+startRow),
visible = rowIndex >= vr.first && rowIndex <= vr.last;
if (visible) {
for (var i = 0; i < colCount; i++) {
c = cs[i];
p.id = c.id;
p.css = i === 0 ? 'x-grid3-cell-first ' : (i == last ? 'x-grid3-cell-last ' : '');
p.attr = p.cellAttr = "";
p.value = c.renderer(r.data[c.name], p, r, rowIndex, i, ds);
p.style = c.style;
if (p.value === undefined || p.value === "") {
p.value = " ";
}
if (r.dirty && typeof r.modified[c.name] !== 'undefined') {
p.css += ' x-grid3-dirty-cell';
}
cb[cb.length] = ct.apply(p);
}
}
var alt = [];
if(stripe && ((rowIndex+1) % 2 === 0)){
alt[0] = "x-grid3-row-alt";
}
if(r.dirty){
alt[1] = " x-grid3-dirty-row";
}
rp.cols = colCount;
if(this.getRowClass){
alt[2] = this.getRowClass(r, rowIndex, rp, ds);
}
rp.alt = alt.join(" ");
rp.cells = cb.join("");
buf[buf.length] = !visible ? ts.rowHolder.apply(rp) : (onlyBody ? rb.apply(rp) : rt.apply(rp));
}
return buf.join("");
},
isRowRendered: function(index){
var row = this.getRow(index);
return row && row.childNodes.length > 0;
},
syncScroll: function(){
Ext.ux.grid.BufferView.superclass.syncScroll.apply(this, arguments);
this.update();
},
// a (optionally) buffered method to update contents of gridview
update: function(){
if (this.scrollDelay) {
if (!this.renderTask) {
this.renderTask = new Ext.util.DelayedTask(this.doUpdate, this);
}
this.renderTask.delay(this.scrollDelay);
}else{
this.doUpdate();
}
},
onRemove : function(ds, record, index, isUpdate){
Ext.ux.grid.BufferView.superclass.onRemove.apply(this, arguments);
if(isUpdate !== true){
this.update();
}
},
doUpdate: function(){
if (this.getVisibleRowCount() > 0) {
var g = this.grid,
cm = g.colModel,
ds = g.store,
cs = this.getColumnData(),
vr = this.getVisibleRows(),
row;
for (var i = vr.first; i <= vr.last; i++) {
// if row is NOT rendered and is visible, render it
if(!this.isRowRendered(i) && (row = this.getRow(i))){
var html = this.doRender(cs, [ds.getAt(i)], ds, i, cm.getColumnCount(), g.stripeRows, true);
row.innerHTML = html;
}
}
this.clean();
}
},
// a buffered method to clean rows
clean : function(){
if(!this.cleanTask){
this.cleanTask = new Ext.util.DelayedTask(this.doClean, this);
}
this.cleanTask.delay(this.cleanDelay);
},
doClean: function(){
if (this.getVisibleRowCount() > 0) {
var vr = this.getVisibleRows();
vr.first -= this.cacheSize;
vr.last += this.cacheSize;
var i = 0, rows = this.getRows();
// if first is less than 0, all rows have been rendered
// so lets clean the end...
if(vr.first <= 0){
i = vr.last + 1;
}
for(var len = this.ds.getCount(); i < len; i++){
// if current row is outside of first and last and
// has content, update the innerHTML to nothing
if ((i < vr.first || i > vr.last) && rows[i].innerHTML) {
rows[i].innerHTML = '';
}
}
}
},
removeTask: function(name){
var task = this[name];
if(task && task.cancel){
task.cancel();
this[name] = null;
}
},
destroy : function(){
this.removeTask('cleanTask');
this.removeTask('renderTask');
Ext.ux.grid.BufferView.superclass.destroy.call(this);
},
layout: function(){
Ext.ux.grid.BufferView.superclass.layout.call(this);
this.update();
}
});// We are adding these custom layouts to a namespace that does not
// exist by default in Ext, so we have to add the namespace first:
Ext.ns('Ext.ux.layout');
<div id="cls-Ext.ux.layout.CenterLayout"></div>/**
* @class Ext.ux.layout.CenterLayout
* @extends Ext.layout.FitLayout
* <p>This is a very simple layout style used to center contents within a container. This layout works within
* nested containers and can also be used as expected as a Viewport layout
龙博甘特图控件(Web版) （2552个子文件） 
Dependencies.asmx 123B Tasks.asmx 97B Default.old.aspx 2KB Default.aspx 2KB ResolveAssemblyReference.cache 209KB DesignTimeResolveAssemblyReferencesInput.cache 9KB tasks.js.cn 7KB dependencies.js.cn 1KB Web.config 7KB DataClasses11.designer.cs 11KB DataClasses1.designer.cs 10KB Tasks.asmx.cs 3KB Dependencies.asmx.cs 2KB AssemblyInfo.cs 1KB Default.aspx.designer.cs 774B Default.aspx.cs 340B DataClasses1.cs 0B Ext Gantt CRUD Demo.csproj 6KB ext-all.css 136KB ext-all.css 132KB ext-all.css 132KB ext-all-notheme.css 98KB xtheme-gray.css 37KB silk.css 17KB calendar.css 17KB ux-all.css 17KB sch-gantt-all.css 15KB sch-gantt-all.css 15KB desktop.css 13KB grid.css 11KB form.css 10KB extjs.css 8KB button.css 8KB panel.css 8KB tabs.css 7KB grid.css 6KB style.css 6KB grid.css 6KB grid.css 6KB docs.css 6KB panel-reset.css 6KB sch.gantt.event.css 6KB GroupTab.css 6KB core.css 5KB toolbar.css 5KB feed-viewer.css 5KB feed-viewer.css 5KB layout.css 5KB date-picker.css 5KB tree.css 4KB feed-viewer-access.css 4KB menu.css 4KB tree.css 4KB form.css 4KB window.css 3KB tree.css 3KB sch.gantt.dependencymanager.css 3KB tree.css 3KB button.css 3KB print.css 3KB toolbar.css 3KB tasks.css 3KB tabs.css 3KB date-picker.css 3KB editor.css 3KB tabs.css 3KB resizable.css 3KB date-picker.css 3KB date-picker.css 3KB statusbar.css 3KB form.css 3KB tabs.css 3KB style2.css 3KB style2.css 3KB forum.css 3KB toolbar.css 3KB toolbar.css 3KB qtips.css 3KB form.css 2KB layout-browser.css 2KB style1.css 2KB style1.css 2KB button.css 2KB button.css 2KB TreeGrid.css 2KB style3.css 2KB style3.css 2KB restful.css 2KB img-org.css 2KB panel.css 2KB panel.css 2KB slider.css 2KB panel.css 2KB sch.gantt.resize.css 2KB window.css 2KB advanced.css 2KB menu.css 2KB chooser.css 2KB window.css 2KB window.css 2KB共 2552 条
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