;(function($) {
/*
* ui.dropdownchecklist
*
* Copyright (c) 2008-2010 Adrian Tosca, Copyright (c) 2010 Ittrium LLC
* Dual licensed under the MIT (MIT-LICENSE.txt)
* and GPL (GPL-LICENSE.txt) licenses.
*
*/
// The dropdown check list jQuery plugin transforms a regular select html element into a dropdown check list.
$.widget("ui.dropdownchecklist", {
// Some globlals
// $.ui.dropdownchecklist.gLastOpened - keeps track of last opened dropdowncheck list so we can close it
// $.ui.dropdownchecklist.gIDCounter - simple counter to provide a unique ID as needed
version: function() {
alert('DropDownCheckList v1.1');
},
// Creates the drop container that keeps the items and appends it to the document
_appendDropContainer: function( controlItem ) {
var wrapper = $("<div/>");
// the container is wrapped in a div
wrapper.addClass("ui-dropdownchecklist ui-dropdownchecklist-dropcontainer-wrapper");
wrapper.addClass("ui-widget");
// assign an id
wrapper.attr("id",controlItem.attr("id") + '-ddw');
// initially hidden
wrapper.css({ position: 'absolute', left: "-33000px", top: "-33000px" });
var container = $("<div/>"); // the actual container
container.addClass("ui-dropdownchecklist-dropcontainer ui-widget-content");
container.css("overflow-y", "auto");
wrapper.append(container);
// insert the dropdown after the master control to try to keep the tab order intact
// if you just add it to the end, tabbing out of the drop down takes focus off the page
// @todo 22Sept2010 - check if size calculation is thrown off if the parent of the
// selector is hidden. We may need to add it to the end of the document here,
// calculate the size, and then move it back into proper position???
//$(document.body).append(wrapper);
wrapper.insertAfter(controlItem);
// flag that tells if the drop container is shown or not
wrapper.isOpen = false;
return wrapper;
},
// Look for browser standard 'open' on a closed selector
_isDropDownKeyShortcut: function(e,keycode) {
return e.altKey && ($.ui.keyCode.DOWN == keycode);// Alt + Down Arrow
},
// Look for key that will tell us to close the open dropdown
_isDropDownCloseKey: function(e,keycode) {
return ($.ui.keyCode.ESCAPE == keycode) || ($.ui.keyCode.ENTER == keycode);
},
// Handler to change the active focus based on a keystroke, moving some count of
// items from the element that has the current focus
_keyFocusChange: function(target,delta,limitToItems) {
// Find item with current focus
var focusables = $(":focusable");
var index = focusables.index(target);
if ( index >= 0 ) {
index += delta;
if ( limitToItems ) {
// Bound change to list of input elements
var allCheckboxes = this.dropWrapper.find("input:not([disabled])");
var firstIndex = focusables.index(allCheckboxes.get(0));
var lastIndex = focusables.index(allCheckboxes.get(allCheckboxes.length-1));
if ( index < firstIndex ) {
index = lastIndex;
} else if ( index > lastIndex ) {
index = firstIndex;
}
}
focusables.get(index).focus();
}
},
// Look for navigation, open, close (wired to keyup)
_handleKeyboard: function(e) {
var self = this;
var keyCode = (e.keyCode || e.which);
if (!self.dropWrapper.isOpen && self._isDropDownKeyShortcut(e, keyCode)) {
// Key command to open the dropdown
e.stopImmediatePropagation();
self._toggleDropContainer(true);
} else if (self.dropWrapper.isOpen && self._isDropDownCloseKey(e, keyCode)) {
// Key command to close the dropdown (but we retain focus in the control)
e.stopImmediatePropagation();
self._toggleDropContainer(false);
self.controlSelector.focus();
} else if (self.dropWrapper.isOpen
&& (e.target.type == 'checkbox')
&& ((keyCode == $.ui.keyCode.DOWN) || (keyCode == $.ui.keyCode.UP)) ) {
// Up/Down to cycle throught the open items
e.stopImmediatePropagation();
self._keyFocusChange(e.target, (keyCode == $.ui.keyCode.DOWN) ? 1 : -1, true);
} else if (self.dropWrapper.isOpen && (keyCode == $.ui.keyCode.TAB) ) {
// I wanted to adjust normal 'tab' processing here, but research indicates
// that TAB key processing is NOT a cancelable event. You have to use a timer
// hack to pull the focus back to where you want it after browser tab
// processing completes. Not going to work for us.
//e.stopImmediatePropagation();
//self._keyFocusChange(e.target, (e.shiftKey) ? -1 : 1, true);
}
},
// Look for change of focus
_handleFocus: function(e,focusIn,forDropdown) {
var self = this;
if (forDropdown && !self.dropWrapper.isOpen) {
// if the focus changes when the control is NOT open, mark it to show where the focus is/is not
e.stopImmediatePropagation();
if (focusIn) {
self.controlSelector.addClass("ui-state-hover");
if ($.ui.dropdownchecklist.gLastOpened != null) {
$.ui.dropdownchecklist.gLastOpened._toggleDropContainer( false );
}
} else {
self.controlSelector.removeClass("ui-state-hover");
}
} else if (!forDropdown && !focusIn) {
// The dropdown is open, and an item (NOT the dropdown) has just lost the focus.
// we really need a reliable method to see who has the focus as we process the blur,
// but that mechanism does not seem to exist. Instead we rely on a delay before
// posting the blur, with a focus event cancelling it before the delay expires.
if ( e != null ) { e.stopImmediatePropagation(); }
self.controlSelector.removeClass("ui-state-hover");
self._toggleDropContainer( false );
}
},
// Clear the pending change of focus, which keeps us 'in' the control
_cancelBlur: function(e) {
var self = this;
if (self.blurringItem != null) {
clearTimeout(self.blurringItem);
self.blurringItem = null;
}
},
// Creates the control that will replace the source select and appends it to the document
// The control resembles a regular select with single selection
_appendControl: function() {
var self = this, sourceSelect = this.sourceSelect, options = this.options;
// the control is wrapped in a basic container
var wrapper = $("<span/>");
wrapper.addClass("ui-dropdownchecklist ui-dropdownchecklist-selector-wrapper ui-widget");
wrapper.css({ cursor: "default", overflow: "hidden" });
// assign an ID
var baseID = sourceSelect.attr("id");
if ((baseID == null) || (baseID == "")) {
baseID = "ddcl-" + $.ui.dropdownchecklist.gIDCounter++;
} else {
baseID = "ddcl-" + baseID;
}
wrapper.attr("id",baseID);
// the actual control which you can style
// inline-block needed to enable 'width' but has interesting problems cross browser
var control = $("<span/>");
control.addClass("ui-dropdownchecklist-selector ui-state-default");
control.css( { display: "inline-block", overflow: "hidden", 'white-space': 'nowrap'} );
// Setting a tab index means we are interested in the tab sequence
var tabIndex = sourceSelect.attr("tabIndex");
if ( tabIndex == null ) {
tabIndex = 0;
} else {
tabIndex = parseInt(tabIndex);
if ( tabIndex < 0 ) {
tabIndex = 0;
}
}
control.attr("tabIndex", tabIndex);
control.keyup(function(e) {self._handleKeyboard(e);});
control.focus(function(e) {self._handleFocus(e,true,true);});
control.blur(function(e) {self._handleFocus(e,false,true);});
wrapper.append(control);
// the optional icon (which is inherently a block)
if (options.icon != null) {
var iconPlacement = (options.icon.placement == null) ? "left" : options.icon.placement;
var anIcon = $("<div/>");
anIcon.addClass("ui-icon");
anIcon.addClass( (options.icon.toOpen != null) ? options.icon.toOpen : "ui-icon-triangle-1-e");
anIcon.css({ 'float': iconPlacement });
control.append(anIcon);
}
// the text container keeps the control text that is built from the selected (checked) items
// inline-block needed to enable 'width' but has interesting problems cross browser
var textContainer = $("<span/>");
textContainer.addClass("ui-dropdownchecklist-text");
textContainer.css( { display: "inline-block", 'white-space': "nowrap", overflow: "hidden" } );
control.append(textContainer);
// add the hover styles to the control
wrapper.hover(
function() {
if (!self.disabled) {
control.addClass("ui-state-hover");
}
}
, function() {
if (!self.disabled) {
control.removeClass("ui-state-hover");
}
}
);
// clicking on the control toggles the drop container
wrapper.click(function(event) {
if (!self.disabled) {
event.stopImmediatePropagation();
self._toggleDropContainer( !self.dropWrapper.isOpen );
}
});
wrapper.insertAfter(sourceSelect);
// Watch for a window resize and adjust the control if open
$(window).resize(function() {
if (!self.disabled && self.dropWrapper.isOpen) {
// Reopen yourself to get the position right
self._toggleDropContainer(true);
}
});
return wrapper;
},
// Creates a drop item that coresponds to an option element in the source select
_createDropItem: function(index, tabIndex, value, text, checked, disabled, indent) {
var self = this, options = this.options, sourceSelect = this.sourceSelect, controlWrapper = this.controlWrapper;
// the item contains a div that contains a checkbox input and a lable for the text
// the div
var item = $("<div/>");
item.addClass("ui-dropdownchecklist-item");
item.css({'white-space': "nowrap"});
var checkedString = checked ? ' checked="checked"' : '';
var classString = disabled ? ' class="inactive"' : ' class="active"';
// generated id must be a bit unique to keep from colliding
var idBase = controlWrapper.attr("id");
var id = idBase + '-i' + index;
var checkBox;
// all items start out disabled to keep them out of the tab order
if (self.isMultiple) { // the checkbox
checkBox = $('<input disabled type="checkbox" id="' + id + '"' + checkedString + classString + ' tabindex="' + tabIndex + '" />');
} else { // the radiobutton
checkBox = $('<input disabled type="radio" id="' + id + '" name="' + idBase + '"' + checkedString + classString + ' tabindex="' + tabIndex + '" />');
}
checkBox = checkBox.attr("index", index).val(value);
item.append(checkBox);
// the text
var label = $("<label for=" + id + "/>");
label.addClass("ui-dropdownchecklist-text");
label.css({ cursor: "default" });
label.text(text);
if (indent) {
item.addClass("ui-dropdownchecklist-indent");
}
item.addClass("ui-state-default");
if (disabled) {
item.addClass("ui-state-disabled");
}
label.click(function(e) {e.stopImmediatePropagation();});
item.append(label);
// active items display themselves with hover
item.hover(
function(e) {
var anItem = $(this);
if (!anItem.hasClass("ui-state-disabled")) { anItem.addClass("ui-state-hover"); }
}
, function(e) {
var anItem = $(this);
anItem.removeClass("ui-state-hover");
}
);
// clicking on the checkbox synchronizes the source select
checkBox.click(function(e) {
var aCheckBox = $(this);
e.stopImmediatePropagation();
if (aCheckBox.hasClass("active") ) {
// Active checkboxes take active action
self._syncSelected(aCheckBox);
self.sourceSelect.trigger("change", 'ddcl_internal');
if (!self.isMultiple && options.closeRadioOnClick) {
self._toggleDropContainer(false);
}
}
});
// we are interested in the focus leaving the check box
// but we need to detect the focus leaving one check box but
// entering another. There is no reliable way to detect who
// received the focus on a blur, so post the blur in the future,
// knowing we will cancel it if we capture the focus in a timely manner
// 23Sept2010 - unfortunately, IE 7+ and Chrome like to post a blur
// event to the current item with focus when the user
// clicks in the scroll bar. So if you have a scrollable
// dropdown with focus on an item, clicking in the scroll
// will close the drop down.
// I have no solution for blur processing at this time.
/*********
var timerFunction = function(){
// I had a hell of a time getting setTimeout to fire this, do not try to
// define it within the blur function
try { self._handleFocus(null,false,false); } catch(ex){ alert('timer failed: '+ex);}
};
checkBox.blur(function(e) {
self.blurringItem = setTimeout( timerFunction, 200 );
});
checkBox.focus(function(e) {self._cancelBlur();});
**********/
// check/uncheck the item on clicks on the entire item div
item.click(function(e) {
var anItem = $(this);
e.stopImmediatePropagation();
if (!anItem.hasClass("ui-state-disabled") ) {
// check/uncheck the underlying control
var aCheckBox = anItem.find("input");
var checked = aCheckBox.attr("checked");
aCheckBox.attr("checked", !checked);
self._syncSelected(aCheckBox);
self.sourceSelect.trigger("change", 'ddcl_internal');
if (!checked && !self.isMultiple && options.closeRadioOnClick) {
self._toggleDropContainer(false);
}
} else {
// retain the focus even if disabled
anItem.focus();
self._cancelBlur();
}
});
// do not let the focus wander around
item.focus(function(e) {
var anItem = $(this);
e.stopImmediatePropagation();
});
item.keyup(function(e) {self._handleKeyboard(e);});
return item;
},
_createGroupItem: function(text,disabled) {
var self = this;
var group = $("<div />");
group.addClass("ui-dropdownchecklist-group ui-widget-header");
if (disabled) {
group.addClass("ui-state-disabled");
}
group.css({'white-space': "nowrap"});
var label = $("<span/>");
label.addClass("ui-dropdownchecklist-text");
label.css( { cursor: "default" });
label.text(text);
group.append(label);
// anything interesting when you click the group???
group.click(function(e) {
var aGroup= $(this);
e.stopImmediatePropagation();
// retain the focus even if no action is taken
aGroup.focus();
self._cancelBlur();
});
// do not let the focus wander around
group.focus(function(e) {
var aGroup = $(this);
e.stopImmediatePropagation();
});
return group;
},
// Creates the drop items and appends them to the drop container
// Also calculates the size needed by the drop container and returns it
_appendItems: function() {
var self = this, sourceSelect = this.sourceSelect, dropWrapper = this.dropWrapper;
var dropContainerDiv = dropWrapper.find(".ui-dropdownchecklist-dropcontainer");
sourceSelect.children().each(function(index) { // when the select has groups
var opt = $(this);
if (opt.is("option")) {
self._appendOption(opt, dropContainerDiv, index, false, false);
} else if (opt.is("optgroup")) {
var disabled = opt.attr("disabled");
var text = opt.attr("label");
if (text != "") {
var group = self._createGroupItem(text,disabled);
dropContainerDiv.append(group);
}
self._appendOptions(opt, dropContainerDiv, index, true, disabled);
}
});
var divWidth = dropContainerDiv.outerWidth();
var divHeight = dropContainerDiv.outerHeight();
return { width: divWidth, height: divHeight };
},
_appendOptions: function(parent, container, parentIndex, indent, forceDisabled) {
var self = this;
parent.children("option").each(function(index) {
var option = $(this);
var childIndex = (parentIndex + "." + index);
self._appendOption(option, container, childIndex, indent, forceDisabled);
});
},
_appendOption: function(option, container, index, indent, forceDisabled) {
var self = this;
var text = option.text();
var value = option.val();
var selected = option.attr("selected");
var disabled = (forceDisabled || option.attr("disabled"));
// Use the same tab index as the selector replacement
var tabIndex = self.controlSelector.attr("tabindex");
var item = self._createDropItem(index, tabIndex, value, text, selected, disabled, indent);
container.append(item);
},
// Synchronizes the items checked and the source select
// When firstItemChecksAll option is active also synchronizes the checked items
// senderCheckbox parameters is the checkbox input that generated the synchronization
_syncSelected: function(senderCheckbox) {
var self = this, options = this.options, sourceSelect = this.sourceSelect, dropWrapper = this.dropWrapper;
var allCheckboxes = dropWrapper.find("input.active");
if (options.firstItemChecksAll) {
// if firstItemChecksAll is true, check all checkboxes if the first one is checked
if ((senderCheckbox != null) && (senderCheckbox.attr("index") == 0)) {
allCheckboxes.attr("checked", senderCheckbox.attr("checked"));
} else {
// check the first checkbox if all the other checkboxes are checked
var allChecked = true;
var firstCheckbox = null;
allCheckboxes.each(function(index) {
if (index > 0) {
var checked = $(this).attr("checked");
if (!checked) { allChecked = false; }
} else {
firstCheckbox = $(this);
}
});
if ( firstCheckbox != null ) {
firstCheckbox.attr("checked", allChecked );
}
}
}
// do the actual synch with the source select
allCheckboxes = dropWrapper.find("input");
var selectOptions = sourceSelect.get(0).options;
allCheckboxes.each(function(index) {
$(selectOptions[index]).attr("selected", $(this).attr("checked"));
});
// update the text shown in the control
self._updateControlText();
// Ensure the focus stays pointing where the user is working
if ( senderCheckbox != null) { senderCheckbox.focus(); }
},
_sourceSelectChangeHandler: function(event) {
var self = this, dropWrapper = this.dropWrapper;
dropWrapper.find("input").val(self.sourceSelect.val());
// update the text shown in the control
self._updateControlText();
},
// Updates the text shown in the control depending on the checked (selected) items
_updateControlText: function() {
var self = this, sourceSelect = this.sourceSelect, options = this.options, controlWrapper = this.controlWrapper;
var firstOption = sourceSelect.find("option:first");
var selectOptions = sourceSelect.find("option");
var text = self._formatText(selectOptions, options.firstItemChecksAll, firstOption);
var controlLabel = controlWrapper.find(".ui-dropdownchecklist-text");
var image = $("<img>");
image.attr("src", "/images/btn/btn_security.png");
image.attr('alt', 'security');
image.attr('id','security_image');
var down = $("<img>");
down.attr("src","/images/btn/btn_down.png")
//controlLabel.html(text);
controlLabel.html(image);
controlLabel.append(" ");
controlLabel.append(down);
//controlLabel.attr("title", text);
controlLabel.attr("title", "security");
},
// Formats the text that is shown in the control
_formatText: function(selectOptions, firstItemChecksAll, firstOption) {
var text;
if ( $.isFunction(this.options.textFormatFunction) ) {
// let the callback do the formatting, but do not allow it to fail
try {
text = this.options.textFormatFunction(selectOptions);
} catch(ex) {
alert( 'textFormatFunction failed: ' + ex );
}
} else if (firstItemChecksAll && (firstOption != null) && firstOption.attr("selected")) {
// just set the text from the first item
text = firstOption.text();
} else {
// concatenate the text from the checked items
text = "";
selectOptions.each(function() {
if ($(this).attr("selected")) {
if ( text != "" ) { text += ", "; }
text += $(this).text();
}
});
if ( text == "" ) {
text = (this.options.emptyText != null) ? this.options.emptyText : " ";
}
}
return text;
},
// Shows and hides the drop container
_toggleDropContainer: function( makeOpen ) {
var self = this;
// hides the last shown drop container
var hide = function(instance) {
if ((instance != null) && instance.dropWrapper.isOpen ){
instance.dropWrapper.isOpen = false;
$.ui.dropdownchecklist.gLastOpened = null;
var config = instance.options;
instance.dropWrapper.css({
top: "-33000px",
left: "-33000px"
});
var aControl = instance.controlSelector;
aControl.removeClass("ui-state-active");
aControl.removeClass("ui-state-hover");
var anIcon = instance.controlWrapper.find(".ui-icon");
if ( anIcon.length > 0 ) {
anIcon.removeClass( (config.icon.toClose != null) ? config.icon.toClose : "ui-icon-triangle-1-s");
anIcon.addClass( (config.icon.toOpen != null) ? config.icon.toOpen : "ui-icon-triangle-1-e");
}
$(document).unbind("click", hide);
// keep the items out of the tab order by disabling them
instance.dropWrapper.find("input.active").attr("disabled","disabled");
// the following blur just does not fire??? because it is hidden??? because it does not have focus???
//instance.sourceSelect.trigger("blur");
//instance.sourceSelect.triggerHandler("blur");
if($.isFunction(config.onComplete)) { try {
config.onComplete.call(instance,instance.sourceSelect.get(0));
} catch(ex) {
alert( 'callback failed: ' + ex );
}}
}
};
// shows the given drop container instance
var show = function(instance) {
if ( !instance.dropWrapper.isOpen ) {
instance.dropWrapper.isOpen = true;
$.ui.dropdownchecklist.gLastOpened = instance;
var config = instance.options;
instance.dropWrapper.css({
top: instance.controlWrapper.offset().top + instance.controlWrapper.outerHeight() + "px",
left: instance.controlWrapper.offset().left + "px"
});
var ancestorsZIndexes = instance.controlWrapper.parents().map(
function() {
var zIndex = $(this).css("z-index");
return isNaN(zIndex) ? 0 : zIndex; }
).get();
var parentZIndex = Math.max.apply(Math, ancestorsZIndexes);
if (parentZIndex > 0) {
instance.dropWrapper.css({
zIndex: (parentZIndex+1)
});
}
var aControl = instance.controlSelector;
aControl.addClass("ui-state-active");
aControl.removeClass("ui-state-hover");
var anIcon = instance.controlWrapper.find(".ui-icon");
if ( anIcon.length > 0 ) {
anIcon.removeClass( (config.icon.toOpen != null) ? config.icon.toOpen : "ui-icon-triangle-1-e");
anIcon.addClass( (config.icon.toClose != null) ? config.icon.toClose : "ui-icon-triangle-1-s");
}
$(document).bind("click", function(e) {hide(instance);} );
// insert the items back into the tab order by enabling all active ones
var activeItems = instance.dropWrapper.find("input.active");
activeItems.removeAttr("disabled");
// we want the focus on the first active input item
var firstActiveItem = activeItems.get(0);
if ( firstActiveItem != null ) {
firstActiveItem.focus();
}
}
};
if ( makeOpen ) {
hide($.ui.dropdownchecklist.gLastOpened);
show(self);
} else {
hide(self);
}
},
// Set the size of the control and of the drop container
_setSize: function(dropCalculatedSize) {
var options = this.options, dropWrapper = this.dropWrapper, controlWrapper = this.controlWrapper;
// use the width from config options if set, otherwise set the same width as the drop container
var controlWidth = dropCalculatedSize.width;
if (options.width != null) {
controlWidth = parseInt(options.width);
} else if (options.minWidth != null) {
var minWidth = parseInt(options.minWidth);
// if the width is too small (usually when there are no items) set a minimum width
if (controlWidth < minWidth) {
controlWidth = minWidth;
}
}
var control = this.controlSelector;
control.css({ width: controlWidth + "px" });
// if we size the text, then Firefox places icons to the right properly
// and we do not wrap on long lines
var controlText = control.find(".ui-dropdownchecklist-text");
var controlIcon = control.find(".ui-icon");
if ( controlIcon != null ) {
// Must be an inner/outer/border problem, but IE6 needs an extra bit of space
controlWidth -= (controlIcon.outerWidth() + 6);
controlText.css( { width: controlWidth + "px" } );
}
// Account for padding, borders, etc
controlWidth = controlWrapper.outerWidth();
// the drop container height can be set from options
var maxDropHeight = (options.maxDropHeight != null)
? parseInt(options.maxDropHeight)
: -1;
var dropHeight = ((maxDropHeight > 0) && (dropCalculatedSize.height > maxDropHeight))
? maxDropHeight
: dropCalculatedSize.height;
// ensure the drop container is not less than the control width (would be ugly)
var dropWidth = dropCalculatedSize.width < controlWidth ? controlWidth : dropCalculatedSize.width;
$(dropWrapper).css({
height: dropHeight + "px",
width: dropWidth + "px"
});
dropWrapper.find(".ui-dropdownchecklist-dropcontainer").css({
height: dropHeight + "px"
});
},
// Initializes the plugin
_init: function() {
var self = this, options = this.options;
if ( $.ui.dropdownchecklist.gIDCounter == null) {
$.ui.dropdownchecklist.gIDCounter = 1;
}
// item blurring relies on a cancelable timer
self.blurringItem = null;
// sourceSelect is the select on which the plugin is applied
var sourceSelect = self.element;
self.initialDisplay = sourceSelect.css("display");
sourceSelect.css("display", "none");
self.initialMultiple = sourceSelect.attr("multiple");
self.isMultiple = self.initialMultiple;
if (options.forceMultiple != null) { self.isMultiple = options.forceMultiple; }
sourceSelect.attr("multiple", true);
self.sourceSelect = sourceSelect;
// append the control that resembles a single selection select
var controlWrapper = self._appendControl();
self.controlWrapper = controlWrapper;
self.controlSelector = controlWrapper.find(".ui-dropdownchecklist-selector");
// create the drop container where the items are shown
var dropWrapper = self._appendDropContainer(controlWrapper);
self.dropWrapper = dropWrapper;
// append the items from the source select element
var dropCalculatedSize = self._appendItems();
// updates the text shown in the control
self._updateControlText(controlWrapper, dropWrapper, sourceSelect);
// set the sizes of control and drop container
self._setSize(dropCalculatedSize);
// look for possible auto-check needed on first item
if ( options.firstItemChecksAll ) {
self._syncSelected(null);
}
// BGIFrame for IE6
if (options.bgiframe && typeof self.dropWrapper.bgiframe == "function") {
self.dropWrapper.bgiframe();
}
// listen for change events on the source select element
// ensure we avoid processing internally triggered changes
self.sourceSelect.change(function(event, eventName) {
if (eventName != 'ddcl_internal') {
self._sourceSelectChangeHandler(event);
}
});
},
// Refresh the disable and check state from the underlying control
_refreshOption: function(item,disabled,selected) {
var aParent = item.parent();
// account for enabled/disabled
if ( disabled ) {
item.attr("disabled","disabled");
item.removeClass("active");
item.addClass("inactive");
aParent.addClass("ui-state-disabled");
} else {
item.removeAttr("disabled");
item.removeClass("inactive");
item.addClass("active");
aParent.removeClass("ui-state-disabled");
}
// adjust the checkbox state
item.attr("checked",selected);
},
_refreshGroup: function(group,disabled) {
if ( disabled ) {
group.addClass("ui-state-disabled");
} else {
group.removeClass("ui-state-disabled");
}
},
refresh: function() {
var self = this, sourceSelect = this.sourceSelect, dropWrapper = this.dropWrapper;
var allCheckBoxes = dropWrapper.find("input");
var allGroups = dropWrapper.find(".ui-dropdownchecklist-group");
var groupCount = 0;
var optionCount = 0;
sourceSelect.children().each(function(index) {
var opt = $(this);
var disabled = opt.attr("disabled");
if (opt.is("option")) {
var selected = opt.attr("selected");
var anItem = $(allCheckBoxes[optionCount]);
self._refreshOption(anItem, disabled, selected);
optionCount += 1;
} else if (opt.is("optgroup")) {
var text = opt.attr("label");
if (text != "") {
var aGroup = $(allGroups[groupCount]);
self._refreshGroup(aGroup, disabled);
groupCount += 1;
}
opt.children("option").each(function(subindex) {
var subopt = $(this);
var subdisabled = (disabled || subopt.attr("disabled"));
var selected = subopt.attr("selected");
var subItem = $(allCheckBoxes[optionCount + subindex]);
self._refreshOption(subItem, subdisabled, selected );
});
}
});
// update the text shown in the control
self._updateControlText();
},
enable: function() {
this.controlSelector.removeClass("ui-state-disabled");
this.disabled = false;
},
disable: function() {
this.controlSelector.addClass("ui-state-disabled");
this.disabled = true;
},
destroy: function() {
$.Widget.prototype.destroy.apply(this, arguments);
this.sourceSelect.css("display", this.initialDisplay);
this.sourceSelect.attr("multiple", this.initialMultiple);
this.controlWrapper.unbind().remove();
this.dropWrapper.remove();
}
});
$.extend($.ui.dropdownchecklist, {
defaults: {
width: null,
maxDropHeight: null,
firstItemChecksAll: false,
closeRadioOnClick: false,
minWidth: 50,
bgiframe: false
}
});
})(jQuery);