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dialog.js
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dialog.js
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// Copyright 2006 The Closure Library Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS-IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/**
* @fileoverview Class for showing simple modal dialog boxes.
*
* TODO(user):
* * Standardize CSS class names with other components
* * Add functionality to "host" other components in content area
* * Abstract out ButtonSet and make it more general
* @see ../demos/dialog.html
*/
goog.provide('goog.ui.Dialog');
goog.provide('goog.ui.Dialog.ButtonSet');
goog.provide('goog.ui.Dialog.ButtonSet.DefaultButtons');
goog.provide('goog.ui.Dialog.DefaultButtonCaptions');
goog.provide('goog.ui.Dialog.DefaultButtonKeys');
goog.provide('goog.ui.Dialog.Event');
goog.provide('goog.ui.Dialog.EventType');
goog.require('goog.asserts');
goog.require('goog.dom');
goog.require('goog.dom.NodeType');
goog.require('goog.dom.TagName');
goog.require('goog.dom.a11y');
goog.require('goog.dom.a11y.Role');
goog.require('goog.dom.classes');
goog.require('goog.events');
goog.require('goog.events.Event');
goog.require('goog.events.EventType');
goog.require('goog.events.KeyCodes');
goog.require('goog.fx.Dragger');
goog.require('goog.math.Rect');
goog.require('goog.structs');
goog.require('goog.structs.Map');
goog.require('goog.style');
goog.require('goog.ui.ModalPopup');
goog.require('goog.userAgent');
/**
* Class for showing simple dialog boxes.
* The Html structure of the dialog box is:
* <pre>
* Element Function Class-name, modal-dialog = default
* ----------------------------------------------------------------------------
* - iframe Iframe mask modal-dialog-bg
* - div Background mask modal-dialog-bg
* - div Dialog area modal-dialog
* - div Title bar modal-dialog-title
* - span modal-dialog-title-text
* - text Title text N/A
* - span modal-dialog-title-close
* - ?? Close box N/A
* - div Content area modal-dialog-content
* - ?? User specified content N/A
* - div Button area modal-dialog-buttons
* - button N/A
* - button
* - ...
* </pre>
* @constructor
* @param {string=} opt_class CSS class name for the dialog element, also used
* as a class name prefix for related elements; defaults to modal-dialog.
* @param {boolean=} opt_useIframeMask Work around windowed controls z-index
* issue by using an iframe instead of a div for bg element.
* @param {goog.dom.DomHelper=} opt_domHelper Optional DOM helper; see {@link
* goog.ui.Component} for semantics.
* @extends {goog.ui.ModalPopup}
*/
goog.ui.Dialog = function(opt_class, opt_useIframeMask, opt_domHelper) {
goog.base(this, opt_useIframeMask, opt_domHelper);
/**
* CSS class name for the dialog element, also used as a class name prefix for
* related elements. Defaults to goog.getCssName('modal-dialog').
* @type {string}
* @private
*/
this.class_ = opt_class || goog.getCssName('modal-dialog');
this.buttons_ = goog.ui.Dialog.ButtonSet.createOkCancel();
};
goog.inherits(goog.ui.Dialog, goog.ui.ModalPopup);
/**
* Button set. Default to Ok/Cancel.
* @type {goog.ui.Dialog.ButtonSet}
* @private
*/
goog.ui.Dialog.prototype.buttons_;
/**
* Whether the escape key closes this dialog.
* @type {boolean}
* @private
*/
goog.ui.Dialog.prototype.escapeToCancel_ = true;
/**
* Whether this dialog should include a title close button.
* @type {boolean}
* @private
*/
goog.ui.Dialog.prototype.hasTitleCloseButton_ = true;
/**
* Whether the dialog is modal. Defaults to true.
* @type {boolean}
* @private
*/
goog.ui.Dialog.prototype.modal_ = true;
/**
* Whether the dialog is draggable. Defaults to true.
* @type {boolean}
* @private
*/
goog.ui.Dialog.prototype.draggable_ = true;
/**
* Opacity for background mask. Defaults to 50%.
* @type {number}
* @private
*/
goog.ui.Dialog.prototype.backgroundElementOpacity_ = 0.50;
/**
* Dialog's title.
* @type {string}
* @private
*/
goog.ui.Dialog.prototype.title_ = '';
/**
* Dialog's content (HTML).
* @type {string}
* @private
*/
goog.ui.Dialog.prototype.content_ = '';
/**
* Dragger.
* @type {goog.fx.Dragger}
* @private
*/
goog.ui.Dialog.prototype.dragger_ = null;
/**
* Whether the dialog should be disposed when it is hidden.
* @type {boolean}
* @private
*/
goog.ui.Dialog.prototype.disposeOnHide_ = false;
/**
* Element for the title bar.
* @type {Element}
* @private
*/
goog.ui.Dialog.prototype.titleEl_ = null;
/**
* Element for the text area of the title bar.
* @type {Element}
* @private
*/
goog.ui.Dialog.prototype.titleTextEl_ = null;
/**
* Id of element for the text area of the title bar.
* @type {?string}
* @private
*/
goog.ui.Dialog.prototype.titleId_ = null;
/**
* Element for the close box area of the title bar.
* @type {Element}
* @private
*/
goog.ui.Dialog.prototype.titleCloseEl_ = null;
/**
* Element for the content area.
* @type {Element}
* @private
*/
goog.ui.Dialog.prototype.contentEl_ = null;
/**
* Element for the button bar.
* @type {Element}
* @private
*/
goog.ui.Dialog.prototype.buttonEl_ = null;
/**
* The dialog's preferred ARIA role.
* @type {goog.dom.a11y.Role}
* @private
*/
goog.ui.Dialog.prototype.preferredAriaRole_ = goog.dom.a11y.Role.DIALOG;
/** @override */
goog.ui.Dialog.prototype.getCssClass = function() {
return this.class_;
};
/**
* Sets the title.
* @param {string} title The title text.
*/
goog.ui.Dialog.prototype.setTitle = function(title) {
this.title_ = title;
if (this.titleTextEl_) {
goog.dom.setTextContent(this.titleTextEl_, title);
}
};
/**
* Gets the title.
* @return {string} The title.
*/
goog.ui.Dialog.prototype.getTitle = function() {
return this.title_;
};
/**
* Allows arbitrary HTML to be set in the content element.
* @param {string} html Content HTML.
*/
goog.ui.Dialog.prototype.setContent = function(html) {
this.content_ = html;
if (this.contentEl_) {
this.contentEl_.innerHTML = html;
}
};
/**
* Gets the content HTML of the content element.
* @return {string} Content HTML.
*/
goog.ui.Dialog.prototype.getContent = function() {
return this.content_;
};
/**
* Returns the dialog's preferred ARIA role. This can be used to override the
* default dialog role, e.g. with an ARIA role of ALERTDIALOG for a simple
* warning or confirmation dialog.
* @return {goog.dom.a11y.Role} This dialog's preferred ARIA role.
*/
goog.ui.Dialog.prototype.getPreferredAriaRole = function() {
return this.preferredAriaRole_;
};
/**
* Sets the dialog's preferred ARIA role. This can be used to override the
* default dialog role, e.g. with an ARIA role of ALERTDIALOG for a simple
* warning or confirmation dialog.
* @param {goog.dom.a11y.Role} role This dialog's preferred ARIA role.
*/
goog.ui.Dialog.prototype.setPreferredAriaRole = function(role) {
this.preferredAriaRole_ = role;
};
/**
* Renders if the DOM is not created.
* @private
*/
goog.ui.Dialog.prototype.renderIfNoDom_ = function() {
if (!this.getElement()) {
// TODO(gboyer): Ideally we'd only create the DOM, but many applications
// are requiring this behavior. Eventually, it would be best if the
// element getters could return null if the elements have not been
// created.
this.render();
}
};
/**
* Returns the content element so that more complicated things can be done with
* the content area. Renders if the DOM is not yet created. Overrides
* {@link goog.ui.Component#getContentElement}.
* @return {Element} The content element.
* @override
*/
goog.ui.Dialog.prototype.getContentElement = function() {
this.renderIfNoDom_();
return this.contentEl_;
};
/**
* Returns the title element so that more complicated things can be done with
* the title. Renders if the DOM is not yet created.
* @return {Element} The title element.
*/
goog.ui.Dialog.prototype.getTitleElement = function() {
this.renderIfNoDom_();
return this.titleEl_;
};
/**
* Returns the title text element so that more complicated things can be done
* with the text of the title. Renders if the DOM is not yet created.
* @return {Element} The title text element.
*/
goog.ui.Dialog.prototype.getTitleTextElement = function() {
this.renderIfNoDom_();
return this.titleTextEl_;
};
/**
* Returns the title close element so that more complicated things can be done
* with the close area of the title. Renders if the DOM is not yet created.
* @return {Element} The close box.
*/
goog.ui.Dialog.prototype.getTitleCloseElement = function() {
this.renderIfNoDom_();
return this.titleCloseEl_;
};
/**
* Returns the button element so that more complicated things can be done with
* the button area. Renders if the DOM is not yet created.
* @return {Element} The button container element.
*/
goog.ui.Dialog.prototype.getButtonElement = function() {
this.renderIfNoDom_();
return this.buttonEl_;
};
/**
* Returns the dialog element so that more complicated things can be done with
* the dialog box. Renders if the DOM is not yet created.
* @return {Element} The dialog element.
*/
goog.ui.Dialog.prototype.getDialogElement = function() {
this.renderIfNoDom_();
return this.getElement();
};
/**
* Returns the background mask element so that more complicated things can be
* done with the background region. Renders if the DOM is not yet created.
* @return {Element} The background mask element.
* @override
*/
goog.ui.Dialog.prototype.getBackgroundElement = function() {
this.renderIfNoDom_();
return goog.base(this, 'getBackgroundElement');
};
/**
* Gets the opacity of the background mask.
* @return {number} Background mask opacity.
*/
goog.ui.Dialog.prototype.getBackgroundElementOpacity = function() {
return this.backgroundElementOpacity_;
};
/**
* Sets the opacity of the background mask.
* @param {number} opacity Background mask opacity.
*/
goog.ui.Dialog.prototype.setBackgroundElementOpacity = function(opacity) {
this.backgroundElementOpacity_ = opacity;
if (this.getElement()) {
var bgEl = this.getBackgroundElement();
if (bgEl) {
goog.style.setOpacity(bgEl, this.backgroundElementOpacity_);
}
}
};
/**
* Sets the modal property of the dialog. In case the dialog is already
* inDocument, renders the modal background elements according to the specified
* modal parameter.
*
* Note that non-modal dialogs cannot use an iframe mask.
*
* @param {boolean} modal Whether the dialog is modal.
*/
goog.ui.Dialog.prototype.setModal = function(modal) {
if (modal != this.modal_) {
this.setModalInternal_(modal);
}
};
/**
* Sets the modal property of the dialog.
* @param {boolean} modal Whether the dialog is modal.
* @private
*/
goog.ui.Dialog.prototype.setModalInternal_ = function(modal) {
this.modal_ = modal;
if (this.isInDocument()) {
var dom = this.getDomHelper();
var bg = this.getBackgroundElement();
var bgIframe = this.getBackgroundIframe();
if (modal) {
if (bgIframe) {
dom.insertSiblingBefore(bgIframe, this.getElement());
}
dom.insertSiblingBefore(bg, this.getElement());
} else {
dom.removeNode(bgIframe);
dom.removeNode(bg);
}
}
};
/**
* @return {boolean} modal Whether the dialog is modal.
*/
goog.ui.Dialog.prototype.getModal = function() {
return this.modal_;
};
/**
* @return {string} The CSS class name for the dialog element.
*/
goog.ui.Dialog.prototype.getClass = function() {
return this.getCssClass();
};
/**
* Sets whether the dialog can be dragged.
* @param {boolean} draggable Whether the dialog can be dragged.
*/
goog.ui.Dialog.prototype.setDraggable = function(draggable) {
this.draggable_ = draggable;
this.setDraggingEnabled_(draggable && this.isInDocument());
};
/**
* Returns a dragger for moving the dialog and adds a class for the move cursor.
* Defaults to allow dragging of the title only, but can be overridden if
* different drag targets or dragging behavior is desired.
* @return {!goog.fx.Dragger} The created dragger instance.
* @protected
*/
goog.ui.Dialog.prototype.createDragger = function() {
return new goog.fx.Dragger(this.getElement(), this.titleEl_);
};
/**
* @return {boolean} Whether the dialog is draggable.
*/
goog.ui.Dialog.prototype.getDraggable = function() {
return this.draggable_;
};
/**
* Enables or disables dragging.
* @param {boolean} enabled Whether to enable it.
* @private.
*/
goog.ui.Dialog.prototype.setDraggingEnabled_ = function(enabled) {
if (this.getElement()) {
goog.dom.classes.enable(this.titleEl_,
goog.getCssName(this.class_, 'title-draggable'), enabled);
}
if (enabled && !this.dragger_) {
this.dragger_ = this.createDragger();
goog.dom.classes.add(this.titleEl_,
goog.getCssName(this.class_, 'title-draggable'));
goog.events.listen(this.dragger_, goog.fx.Dragger.EventType.START,
this.setDraggerLimits_, false, this);
} else if (!enabled && this.dragger_) {
this.dragger_.dispose();
this.dragger_ = null;
}
};
/** @override */
goog.ui.Dialog.prototype.createDom = function() {
goog.base(this, 'createDom');
var element = this.getElement();
goog.asserts.assert(element, 'getElement() returns null');
var dom = this.getDomHelper();
this.titleEl_ = dom.createDom('div',
{'className': goog.getCssName(this.class_, 'title'), 'id': this.getId()},
this.titleTextEl_ = dom.createDom(
'span', goog.getCssName(this.class_, 'title-text'), this.title_),
this.titleCloseEl_ = dom.createDom(
'span', goog.getCssName(this.class_, 'title-close'))),
goog.dom.append(element, this.titleEl_,
this.contentEl_ = dom.createDom('div',
goog.getCssName(this.class_, 'content')),
this.buttonEl_ = dom.createDom('div',
goog.getCssName(this.class_, 'buttons')));
this.titleId_ = this.titleEl_.id;
goog.dom.a11y.setRole(element, this.getPreferredAriaRole());
goog.dom.a11y.setState(element, 'labelledby', this.titleId_ || '');
// If setContent() was called before createDom(), make sure the inner HTML of
// the content element is initialized.
if (this.content_) {
this.contentEl_.innerHTML = this.content_;
}
goog.style.showElement(this.titleCloseEl_, this.hasTitleCloseButton_);
// Render the buttons.
if (this.buttons_) {
this.buttons_.attachToElement(this.buttonEl_);
}
goog.style.showElement(this.buttonEl_, !!this.buttons_);
this.setBackgroundElementOpacity(this.backgroundElementOpacity_);
};
/** @override */
goog.ui.Dialog.prototype.decorateInternal = function(element) {
goog.base(this, 'decorateInternal', element);
// Decorate or create the content element.
var contentClass = goog.getCssName(this.class_, 'content');
this.contentEl_ = goog.dom.getElementsByTagNameAndClass(
null, contentClass, this.getElement())[0];
if (this.contentEl_) {
this.content_ = this.contentEl_.innerHTML;
} else {
this.contentEl_ = this.getDomHelper().createDom('div', contentClass);
if (this.content_) {
this.contentEl_.innerHTML = this.content_;
}
this.getElement().appendChild(this.contentEl_);
}
// Decorate or create the title bar element.
var titleClass = goog.getCssName(this.class_, 'title');
var titleTextClass = goog.getCssName(this.class_, 'title-text');
var titleCloseClass = goog.getCssName(this.class_, 'title-close');
this.titleEl_ = goog.dom.getElementsByTagNameAndClass(
null, titleClass, this.getElement())[0];
if (this.titleEl_) {
// Only look for title text & title close elements if a title bar element
// was found. Otherwise assume that the entire title bar has to be
// created from scratch.
this.titleTextEl_ = goog.dom.getElementsByTagNameAndClass(
null, titleTextClass, this.titleEl_)[0];
this.titleCloseEl_ = goog.dom.getElementsByTagNameAndClass(
null, titleCloseClass, this.titleEl_)[0];
// Give the title an id if it doesn't already have one.
if (!this.titleEl_.id) {
this.titleEl_.id = this.getId();
}
} else {
// Create the title bar element and insert it before the content area.
// This is useful if the element to decorate only includes a content area.
this.titleEl_ = this.getDomHelper().createDom('div',
{'className': titleClass, 'id': this.getId()});
this.getElement().insertBefore(this.titleEl_, this.contentEl_);
}
this.titleId_ = this.titleEl_.id;
// Decorate or create the title text element.
if (this.titleTextEl_) {
this.title_ = goog.dom.getTextContent(this.titleTextEl_);
} else {
this.titleTextEl_ = this.getDomHelper().createDom('span', titleTextClass,
this.title_);
this.titleEl_.appendChild(this.titleTextEl_);
}
goog.dom.a11y.setState(this.getElement(), 'labelledby', this.titleId_ || '');
// Decorate or create the title close element.
if (!this.titleCloseEl_) {
this.titleCloseEl_ = this.getDomHelper().createDom('span', titleCloseClass);
this.titleEl_.appendChild(this.titleCloseEl_);
}
goog.style.showElement(this.titleCloseEl_, this.hasTitleCloseButton_);
// Decorate or create the button container element.
var buttonsClass = goog.getCssName(this.class_, 'buttons');
this.buttonEl_ = goog.dom.getElementsByTagNameAndClass(
null, buttonsClass, this.getElement())[0];
if (this.buttonEl_) {
// Button container element found. Create empty button set and use it to
// decorate the button container.
this.buttons_ = new goog.ui.Dialog.ButtonSet(this.getDomHelper());
this.buttons_.decorate(this.buttonEl_);
} else {
// Create new button container element, and render a button set into it.
this.buttonEl_ = this.getDomHelper().createDom('div', buttonsClass);
this.getElement().appendChild(this.buttonEl_);
if (this.buttons_) {
this.buttons_.attachToElement(this.buttonEl_);
}
goog.style.showElement(this.buttonEl_, !!this.buttons_);
}
this.setBackgroundElementOpacity(this.backgroundElementOpacity_);
};
/** @override */
goog.ui.Dialog.prototype.enterDocument = function() {
goog.base(this, 'enterDocument');
// Listen for keyboard events while the dialog is visible.
this.getHandler().
listen(this.getElement(), goog.events.EventType.KEYDOWN, this.onKey_).
listen(this.getElement(), goog.events.EventType.KEYPRESS, this.onKey_);
// NOTE: see bug 1163154 for an example of an edge case where making the
// dialog visible in response to a KEYDOWN will result in a CLICK event
// firing on the default button (immediately closing the dialog) if the key
// that fired the KEYDOWN is also normally used to activate controls
// (i.e. SPACE/ENTER).
//
// This could be worked around by attaching the onButtonClick_ handler in a
// setTimeout, but that was deemed undesirable.
this.getHandler().listen(this.buttonEl_, goog.events.EventType.CLICK,
this.onButtonClick_);
// Add drag support.
this.setDraggingEnabled_(this.draggable_);
// Add event listeners to the close box and the button container.
this.getHandler().listen(
this.titleCloseEl_, goog.events.EventType.CLICK,
this.onTitleCloseClick_);
goog.dom.a11y.setRole(this.getElement(), this.getPreferredAriaRole());
if (this.titleTextEl_.id !== '') {
goog.dom.a11y.setState(
this.getElement(), 'labelledby', this.titleTextEl_.id);
}
if (!this.modal_) {
this.setModalInternal_(false);
}
};
/** @override */
goog.ui.Dialog.prototype.exitDocument = function() {
if (this.isVisible()) {
this.setVisible(false);
}
// Remove drag support.
this.setDraggingEnabled_(false);
goog.base(this, 'exitDocument');
};
/**
* Sets the visibility of the dialog box and moves focus to the
* default button. Lazily renders the component if needed. After this
* method returns, isVisible() will always return the new state, even
* if there is a transition.
* @param {boolean} visible Whether the dialog should be visible.
* @override
*/
goog.ui.Dialog.prototype.setVisible = function(visible) {
if (visible == this.isVisible()) {
return;
}
// If the dialog hasn't been rendered yet, render it now.
if (!this.isInDocument()) {
this.render();
}
goog.base(this, 'setVisible', visible);
};
/** @override */
goog.ui.Dialog.prototype.onShow = function() {
goog.base(this, 'onShow');
this.dispatchEvent(goog.ui.Dialog.EventType.AFTER_SHOW);
};
/** @override */
goog.ui.Dialog.prototype.onHide = function() {
goog.base(this, 'onHide');
this.dispatchEvent(goog.ui.Dialog.EventType.AFTER_HIDE);
if (this.disposeOnHide_) {
this.dispose();
}
};
/**
* Focuses the dialog contents and the default dialog button if there is one.
* @override
*/
goog.ui.Dialog.prototype.focus = function() {
goog.base(this, 'focus');
// Move focus to the default button (if any).
if (this.getButtonSet()) {
var defaultButton = this.getButtonSet().getDefault();
if (defaultButton) {
var doc = this.getDomHelper().getDocument();
var buttons = this.buttonEl_.getElementsByTagName('button');
for (var i = 0, button; button = buttons[i]; i++) {
if (button.name == defaultButton) {
try {
// Reopening a dialog can cause focusing the button to fail in
// WebKit and Opera. Shift the focus to a temporary <input>
// element to make refocusing the button possible.
if (goog.userAgent.WEBKIT || goog.userAgent.OPERA) {
var temp = doc.createElement('input');
temp.style.cssText =
'position:fixed;width:0;height:0;left:0;top:0;';
this.getElement().appendChild(temp);
temp.focus();
this.getElement().removeChild(temp);
}
button.focus();
} catch (e) {
// Swallow this. Could be the button is disabled
// and IE6 wishes to throw an error.
}
break;
}
}
}
}
};
/**
* Sets dragger limits when dragging is started.
* @param {!goog.events.Event} e goog.fx.Dragger.EventType.START event.
* @private
*/
goog.ui.Dialog.prototype.setDraggerLimits_ = function(e) {
var doc = this.getDomHelper().getDocument();
var win = goog.dom.getWindow(doc) || window;
// Take the max of scroll height and view height for cases in which document
// does not fill screen.
var viewSize = goog.dom.getViewportSize(win);
var w = Math.max(doc.body.scrollWidth, viewSize.width);
var h = Math.max(doc.body.scrollHeight, viewSize.height);
var dialogSize = goog.style.getSize(this.getElement());
if (goog.style.getComputedPosition(this.getElement()) == 'fixed') {
// Ensure position:fixed dialogs can't be dragged beyond the viewport.
this.dragger_.setLimits(new goog.math.Rect(0, 0,
Math.max(0, viewSize.width - dialogSize.width),
Math.max(0, viewSize.height - dialogSize.height)));
} else {
this.dragger_.setLimits(new goog.math.Rect(0, 0,
w - dialogSize.width, h - dialogSize.height));
}
};
/**
* Handles a click on the title close area.
* @param {goog.events.BrowserEvent} e Browser's event object.
* @private
*/
goog.ui.Dialog.prototype.onTitleCloseClick_ = function(e) {
if (!this.hasTitleCloseButton_) {
return;
}
var bs = this.getButtonSet();
var key = bs && bs.getCancel();
// Only if there is a valid cancel button is an event dispatched.
if (key) {
var caption = /** @type {Element|string} */(bs.get(key));
if (this.dispatchEvent(new goog.ui.Dialog.Event(key, caption))) {
this.setVisible(false);
}
} else {
this.setVisible(false);
}
};
/**
* @return {boolean} Whether this dialog has a title close button.
*/
goog.ui.Dialog.prototype.getHasTitleCloseButton = function() {
return this.hasTitleCloseButton_;
};
/**
* Sets whether the dialog should have a close button in the title bar. There
* will always be an element for the title close button, but setting this
* parameter to false will cause it to be hidden and have no active listener.
* @param {boolean} b Whether this dialog should have a title close button.
*/
goog.ui.Dialog.prototype.setHasTitleCloseButton = function(b) {
this.hasTitleCloseButton_ = b;
if (this.titleCloseEl_) {
goog.style.showElement(this.titleCloseEl_, this.hasTitleCloseButton_);
}
};
/**
* @return {boolean} Whether the escape key should close this dialog.
*/
goog.ui.Dialog.prototype.isEscapeToCancel = function() {
return this.escapeToCancel_;
};
/**
* @param {boolean} b Whether the escape key should close this dialog.
*/
goog.ui.Dialog.prototype.setEscapeToCancel = function(b) {
this.escapeToCancel_ = b;
};
/**
* Sets whether the dialog should be disposed when it is hidden. By default
* dialogs are not disposed when they are hidden.
* @param {boolean} b Whether the dialog should get disposed when it gets
* hidden.
*/
goog.ui.Dialog.prototype.setDisposeOnHide = function(b) {
this.disposeOnHide_ = b;
};
/**
* @return {boolean} Whether the dialog should be disposed when it is hidden.
*/
goog.ui.Dialog.prototype.getDisposeOnHide = function() {
return this.disposeOnHide_;
};
/** @override */
goog.ui.Dialog.prototype.disposeInternal = function() {
this.titleCloseEl_ = null;
this.buttonEl_ = null;
goog.base(this, 'disposeInternal');
};
/**
* Sets the button set to use.
* Note: Passing in null will cause no button set to be rendered.
* @param {goog.ui.Dialog.ButtonSet?} buttons The button set to use.
*/
goog.ui.Dialog.prototype.setButtonSet = function(buttons) {
this.buttons_ = buttons;
if (this.buttonEl_) {
if (this.buttons_) {
this.buttons_.attachToElement(this.buttonEl_);
} else {
this.buttonEl_.innerHTML = '';
}
goog.style.showElement(this.buttonEl_, !!this.buttons_);
}
};
/**
* Returns the button set being used.
* @return {goog.ui.Dialog.ButtonSet?} The button set being used.
*/
goog.ui.Dialog.prototype.getButtonSet = function() {
return this.buttons_;
};
/**
* Handles a click on the button container.
* @param {goog.events.BrowserEvent} e Browser's event object.
* @private
*/
goog.ui.Dialog.prototype.onButtonClick_ = function(e) {
var button = this.findParentButton_(/** @type {Element} */ (e.target));
if (button && !button.disabled) {
var key = button.name;
var caption = /** @type {Element|string} */(
this.getButtonSet().get(key));
if (this.dispatchEvent(new goog.ui.Dialog.Event(key, caption))) {
this.setVisible(false);
}
}
};
/**
* Finds the parent button of an element (or null if there was no button
* parent).
* @param {Element} element The element that was clicked on.
* @return {Element} Returns the parent button or null if not found.
* @private
*/
goog.ui.Dialog.prototype.findParentButton_ = function(element) {
var el = element;
while (el != null && el != this.buttonEl_) {
if (el.tagName == 'BUTTON') {
return /** @type {Element} */(el);
}
el = el.parentNode;
}
return null;
};
/**
* Handles keydown and keypress events, and dismisses the popup if cancel is
* pressed. If there is a cancel action in the ButtonSet, than that will be
* fired. Also prevents tabbing out of the dialog.
* @param {goog.events.BrowserEvent} e Browser's event object.
* @private
*/
goog.ui.Dialog.prototype.onKey_ = function(e) {
var close = false;
var hasHandler = false;
var buttonSet = this.getButtonSet();
var target = e.target;
if (e.type == goog.events.EventType.KEYDOWN) {
// Escape and tab can only properly be handled in keydown handlers.
if (this.escapeToCancel_ && e.keyCode == goog.events.KeyCodes.ESC) {
// Only if there is a valid cancel button is an event dispatched.
var cancel = buttonSet && buttonSet.getCancel();
// Users may expect to hit escape on a SELECT element.
var isSpecialFormElement =
target.tagName == 'SELECT' && !target.disabled;
if (cancel && !isSpecialFormElement) {
hasHandler = true;
var caption = buttonSet.get(cancel);
close = this.dispatchEvent(
new goog.ui.Dialog.Event(cancel,
/** @type {Element|null|string} */(caption)));
} else if (!isSpecialFormElement) {