让XTREE支持CHECKBOX

转载:

js 代码

在xtree.js的最后添加
function WebFXCheckBoxTreeItem(sText, sAction, bChecked, eParent, sIcon, sOpenIcon) {
this.base = WebFXTreeItem;
this.base(sText, sAction, eParent, sIcon, sOpenIcon);

this._checked = bChecked;
}

WebFXCheckBoxTreeItem.prototype = new WebFXTreeItem;

WebFXCheckBoxTreeItem.prototype.toString = function (nItem, nItemCount) {
var foo = this.parentNode;
var indent = '';
if (nItem + 1 == nItemCount) { this.parentNode._last = true; }
var i = 0;
while (foo.parentNode) {
foo = foo.parentNode;
indent = " + this.id + "-indent-" + i + "\" src=\"" + ((foo._last)?webFXTreeConfig.blankIcon:webFXTreeConfig.iIcon) + "\">" + indent;
i++;
}
this._level = i;
if (this.childNodes.length) { this.folder = 1; }
else { this.open = false; }
if ((this.folder) || (webFXTreeHandler.behavior != 'classic')) {
if (!this.icon) { this.icon = webFXTreeConfig.folderIcon; }
if (!this.openIcon) { this.openIcon = webFXTreeConfig.openFolderIcon; }
}
else if (!this.icon) { this.icon = webFXTreeConfig.fileIcon; }
var label = this.text.replace(//g, '>');
var str = " + this.id + "\" ondblclick=\"webFXTreeHandler.toggle(this);\" class=\"webfx-tree-item\" onkeydown=\"return webFXTreeHandler.keydown(this, event)\">";
str += indent;
str += " + this.id + "-plus\" src=\"" + ((this.folder)?((this.open)?((this.parentNode._last)?webFXTreeConfig.lMinusIcon:webFXTreeConfig.tMinusIcon):((this.parentNode._last)?webFXTreeConfig.lPlusIcon:webFXTreeConfig.tPlusIcon)):((this.parentNode._last)?webFXTreeConfig.lIcon:webFXTreeConfig.tIcon)) + "\" onclick=\"webFXTreeHandler.toggle(this);\">"

// insert check box
str += " +
" class=\"tree-check-box\"" +
(this._checked ? " checked=\"checked\"" : "") +
" onclick=\"webFXTreeHandler.all[this.parentNode.id].setChecked(this.checked)\"" +
" />";
// end insert checkbox

str += " + this.id + "-icon\" class=\"webfx-tree-icon\" src=\"" + ((webFXTreeHandler.behavior == 'classic' && this.open)?this.openIcon:this.icon) + "\" onclick=\"webFXTreeHandler.select(this);\"> + this.action + "\" id=\"" + this.id + "-anchor\" onfocus=\"webFXTreeHandler.focus(this);\" onblur=\"webFXTreeHandler.blur(this);\">" + label + ";
str += " + this.id + "-cont\" class=\"webfx-tree-container\" style=\"display: " + ((this.open)?'block':'none') + ";\">";
for (var i = 0; i < this.childNodes.length; i++) {
str += this.childNodes[i].toString(i,this.childNodes.length);
}
str += " ";
this.plusIcon = ((this.parentNode._last)?webFXTreeConfig.lPlusIcon:webFXTreeConfig.tPlusIcon);
this.minusIcon = ((this.parentNode._last)?webFXTreeConfig.lMinusIcon:webFXTreeConfig.tMinusIcon);
return str;
}

WebFXCheckBoxTreeItem.prototype.getChecked = function () {
var divEl = document.getElementById(this.id);
var inputEl = divEl.getElementsByTagName("INPUT")[0];
return this._checked = inputEl.checked;
};

WebFXCheckBoxTreeItem.prototype.setChecked = function (bChecked) {
if (bChecked != this.getChecked()) {
var divEl = document.getElementById(this.id);
var inputEl = divEl.getElementsByTagName("INPUT")[0];
this._checked = inputEl.checked = bChecked;

if (typeof this.onchange == "function")
this.onchange();
}
};   
 
并且在tree.js调用时把WebFXTreeItem 改成 WebFXCheckBoxTreeItem 其他的具体的你可以看下注视xtree的作者 非常仔细地注释

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