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Diffstat (limited to 'contexts/data/lib/closure-library/closure/goog/dom/bufferedviewportsizemonitor.js')
-rw-r--r-- | contexts/data/lib/closure-library/closure/goog/dom/bufferedviewportsizemonitor.js | 211 |
1 files changed, 0 insertions, 211 deletions
diff --git a/contexts/data/lib/closure-library/closure/goog/dom/bufferedviewportsizemonitor.js b/contexts/data/lib/closure-library/closure/goog/dom/bufferedviewportsizemonitor.js deleted file mode 100644 index ac29f26..0000000 --- a/contexts/data/lib/closure-library/closure/goog/dom/bufferedviewportsizemonitor.js +++ /dev/null @@ -1,211 +0,0 @@ -// Copyright 2012 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 A viewport size monitor that buffers RESIZE events until the - * window size has stopped changing, within a specified period of time. For - * every RESIZE event dispatched, this will dispatch up to two *additional* - * events: - * - {@link #EventType.RESIZE_WIDTH} if the viewport's width has changed since - * the last buffered dispatch. - * - {@link #EventType.RESIZE_HEIGHT} if the viewport's height has changed since - * the last buffered dispatch. - * You likely only need to listen to one of the three events. But if you need - * more, just be cautious of duplicating effort. - * - */ - -goog.provide('goog.dom.BufferedViewportSizeMonitor'); - -goog.require('goog.async.Delay'); -goog.require('goog.events'); -goog.require('goog.events.EventTarget'); -goog.require('goog.events.EventType'); -goog.require('goog.math.Size'); - - - -/** - * Creates a new BufferedViewportSizeMonitor. - * @param {!goog.dom.ViewportSizeMonitor} viewportSizeMonitor The - * underlying viewport size monitor. - * @param {number=} opt_bufferMs The buffer time, in ms. If not specified, this - * value defaults to {@link #RESIZE_EVENT_DELAY_MS_}. - * @constructor - * @extends {goog.events.EventTarget} - */ -goog.dom.BufferedViewportSizeMonitor = function( - viewportSizeMonitor, opt_bufferMs) { - goog.base(this); - - /** - * The underlying viewport size monitor. - * @type {goog.dom.ViewportSizeMonitor} - * @private - */ - this.viewportSizeMonitor_ = viewportSizeMonitor; - - /** - * The current size of the viewport. - * @type {goog.math.Size} - * @private - */ - this.currentSize_ = this.viewportSizeMonitor_.getSize(); - - /** - * The previously recorded size of the viewport. - * @type {goog.math.Size} - * @private - */ - this.previousSize_ = this.currentSize_; - - /** - * The resize buffer time in ms. - * @type {number} - * @private - */ - this.resizeBufferMs_ = opt_bufferMs || - goog.dom.BufferedViewportSizeMonitor.RESIZE_EVENT_DELAY_MS_; - - goog.events.listen( - this.viewportSizeMonitor_, - goog.events.EventType.RESIZE, - this.handleResize_, - false /* opt_capture */, - this); -}; -goog.inherits(goog.dom.BufferedViewportSizeMonitor, goog.events.EventTarget); - - -/** - * Additional events to dispatch. - * @enum {string} - */ -goog.dom.BufferedViewportSizeMonitor.EventType = { - RESIZE_HEIGHT: goog.events.getUniqueId('rh'), - RESIZE_WIDTH: goog.events.getUniqueId('rw') -}; - - -/** - * Delay for the resize event. - * @type {goog.async.Delay} - * @private - */ -goog.dom.BufferedViewportSizeMonitor.prototype.resizeDelay_; - - -/** - * Whether the monitoring has been paused. - * @type {boolean} - * @private - */ -goog.dom.BufferedViewportSizeMonitor.prototype.paused_; - - -/** - * Default number of milliseconds to wait after a resize event to relayout the - * page. - * @type {number} - * @const - * @private - */ -goog.dom.BufferedViewportSizeMonitor.RESIZE_EVENT_DELAY_MS_ = 100; - - -/** @override */ -goog.dom.BufferedViewportSizeMonitor.prototype.disposeInternal = - function() { - goog.events.unlisten( - this.viewportSizeMonitor_, - goog.events.EventType.RESIZE, - this.handleResize_, - false /* opt_capture */, - this); - goog.base(this, 'disposeInternal'); -}; - - -/** - * Handles resize events on the underlying ViewportMonitor. - * @param {goog.events.Event} e The resize event. - * @private - */ -goog.dom.BufferedViewportSizeMonitor.prototype.handleResize_ = - function(e) { - if (!this.resizeDelay_) { - this.resizeDelay_ = new goog.async.Delay( - goog.bind(this.onWindowResize_, this, e), this.resizeBufferMs_); - this.registerDisposable(this.resizeDelay_); - } - this.resizeDelay_.start(); -}; - - -/** - * Window resize callback that determines whether to reflow the view contents. - * @param {goog.events.Event} e The resize event. - * @private - */ -goog.dom.BufferedViewportSizeMonitor.prototype.onWindowResize_ = - function(e) { - if (this.viewportSizeMonitor_.isDisposed()) { - return; - } - var viewportSize = this.viewportSizeMonitor_.getSize(); - if (!this.paused_ && - !goog.math.Size.equals(viewportSize, this.currentSize_)) { - if (!this.previousSize_ || - viewportSize.width != this.previousSize_.width) { - this.dispatchEvent( - goog.dom.BufferedViewportSizeMonitor.EventType.RESIZE_WIDTH); - } - if (!this.previousSize_ || - viewportSize.height != this.previousSize_.height) { - this.dispatchEvent( - goog.dom.BufferedViewportSizeMonitor.EventType.RESIZE_HEIGHT); - } - this.previousSize_ = this.currentSize_; - this.currentSize_ = viewportSize; - this.dispatchEvent(e); - } -}; - - -/** - * Returns the current size of the viewport. - * @return {goog.math.Size?} The current viewport size. - */ -goog.dom.BufferedViewportSizeMonitor.prototype.getSize = function() { - return this.currentSize_ ? this.currentSize_.clone() : null; -}; - - -/** - * Returns the previous size of the viewport. - * @return {goog.math.Size?} The previous size of the viewport on the last - * RESIZE event. - */ -goog.dom.BufferedViewportSizeMonitor.prototype.getPreviousSize = function() { - return this.previousSize_ ? this.previousSize_.clone() : null; -}; - - -/** - * Pauses and unpauses viewport size monitoring. - * @param {boolean} paused True to pause. - */ -goog.dom.BufferedViewportSizeMonitor.prototype.setPaused = function(paused) { - this.paused_ = paused; -}; |