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YUI 2 has been deprecated since 2011. This site acts as an archive for files and documentation.
This documentation is no longer maintained.
(function () {
var Paginator = YAHOO.widget.Paginator,
l = YAHOO.lang,
setId = YAHOO.util.Dom.generateId;
/**
* ui Component to generate the jump-to-page dropdown
*
* @namespace YAHOO.widget.Paginator.ui
* @class JumpToPageDropdown
* @for YAHOO.widget.Paginator
*
* @constructor
* @param p {Pagintor} Paginator instance to attach to
*/
Paginator.ui.JumpToPageDropdown = function (p) {
this.paginator = p;
p.subscribe('rowsPerPageChange',this.rebuild,this,true);
p.subscribe('rowsPerPageOptionsChange',this.rebuild,this,true);
p.subscribe('pageChange',this.update,this,true);
p.subscribe('totalRecordsChange',this.rebuild,this,true);
p.subscribe('destroy',this.destroy,this,true);
};
/**
* Decorates Paginator instances with new attributes. Called during
* Paginator instantiation.
* @method init
* @param p {Paginator} Paginator instance to decorate
* @static
*/
Paginator.ui.JumpToPageDropdown.init = function (p) {
/**
* CSS class assigned to the select node
* @attribute jumpToPageDropdownClass
* @default 'yui-pg-jtp-options'
*/
p.setAttributeConfig('jumpToPageDropdownClass', {
value : 'yui-pg-jtp-options',
validator : l.isString
});
};
Paginator.ui.JumpToPageDropdown.prototype = {
/**
* select node
* @property select
* @type HTMLElement
* @private
*/
select : null,
/**
* Generate the select and option nodes and returns the select node.
* @method render
* @param id_base {string} used to create unique ids for generated nodes
* @return {HTMLElement}
*/
render : function (id_base) {
this.select = document.createElement('select');
setId(this.select, id_base + '-jtp');
this.select.className = this.paginator.get('jumpToPageDropdownClass');
this.select.title = 'Jump to page';
YAHOO.util.Event.on(this.select,'change',this.onChange,this,true);
this.rebuild();
return this.select;
},
/**
* (Re)generate the select options.
* @method rebuild
*/
rebuild : function (e) {
var p = this.paginator,
sel = this.select,
numPages = p.getTotalPages(),
opt,i,len;
this.all = null;
for (i = 0, len = numPages; i < len; ++i ) {
opt = sel.options[i] ||
sel.appendChild(document.createElement('option'));
opt.innerHTML = i + 1;
opt.value = i + 1;
}
for ( i = numPages, len = sel.options.length ; i < len ; i++ ) {
sel.removeChild(sel.lastChild);
}
this.update();
},
/**
* Select the appropriate option if changed.
* @method update
* @param e {CustomEvent} The calling change event
*/
update : function (e) {
if (e && e.prevValue === e.newValue) {
return;
}
var cp = this.paginator.getCurrentPage()+'',
options = this.select.options,
i,len;
for (i = 0, len = options.length; i < len; ++i) {
if (options[i].value === cp) {
options[i].selected = true;
break;
}
}
},
/**
* Listener for the select's onchange event. Sent to setPage method.
* @method onChange
* @param e {DOMEvent} The change event
*/
onChange : function (e) {
this.paginator.setPage(
parseInt(this.select.options[this.select.selectedIndex].value,false));
},
/**
* Removes the select node and clears event listeners
* @method destroy
* @private
*/
destroy : function () {
YAHOO.util.Event.purgeElement(this.select);
this.select.parentNode.removeChild(this.select);
this.select = null;
}
};
})();