Update third_party/document_image_extractor

third_party/document_image_extractor/third_party/src/dom_controller.js

Index: third_party/document_image_extractor/third_party/src/dom_controller.js
diff --git a/third_party/document_image_extractor/third_party/src/dom_controller.js b/third_party/document_image_extractor/third_party/src/dom_controller.js
deleted file mode 100644
index 97dd3cf8b80526cd62dcd85b7ad672848ae44313..0000000000000000000000000000000000000000
--- a/third_party/document_image_extractor/third_party/src/dom_controller.js
+++ /dev/null
@@ -1,264 +0,0 @@
-goog.provide('image.collections.extension.DomController');
-
-goog.require('goog.Timer');
-goog.require('goog.array');
-goog.require('goog.dom');
-goog.require('goog.events.EventType');
-goog.require('goog.log');
-goog.require('gws.collections.common.Constants');
-goog.require('image.collections.extension.Controller');
-goog.require('image.collections.extension.DocumentImage');
-goog.require('image.collections.extension.DocumentVideo');
-goog.require('image.collections.extension.DomEvent');
-
-goog.scope(function() {
-var Constants = gws.collections.common.Constants;
-var DocumentImage = image.collections.extension.DocumentImage;
-var DocumentVideo = image.collections.extension.DocumentVideo;
-var DomEvent = image.collections.extension.DomEvent;
-
-
-/**
- * This class handles page DOM events and implements DOM manipulation.
- * It should be instantiated by a content script.
- * TODO(busaryev): preloading may not be the best choice for mobile clients.
- * @extends {image.collections.extension.Controller}
- * @constructor
- */
-image.collections.extension.DomController = function() {
-  DomController.base(this, 'constructor');
-
-  /** @private {number} Number of DOM elements left. */
-  this.numElementsToProcess_ = 0;
-
-  /** @private {number} The timeout id for goog.Timer.callOnce. */
-  this.timeoutId_ = -1;
-};
-goog.inherits(image.collections.extension.DomController,
-              image.collections.extension.Controller);
-var DomController = image.collections.extension.DomController;
-
-
-/** @private {goog.log.Logger} */
-DomController.logger_ = goog.log.getLogger(
-    'image.collections.extension.DomController');
-
-
-/**
- * @private {number} The number of milliseconds to wait for the load
- * event to occur before giving up. This ensures we are not wasting too much
- * time trying to get the clip.
- */
-DomController.LOAD_TIMEOUT_MS_ = 5000;
-
-
-/** @override */
-DomController.prototype.initialize = function(parentEventTarget) {
-  DomController.base(this, 'initialize', parentEventTarget);
-
-  this.eventHandler.
-      listen(parentEventTarget, DomEvent.Type.INITIALIZE_DOM,
-             this.handleInitializeDom_);
-};
-
-
-/**
- * @param {DomEvent} e
- * @private
- */
-DomController.prototype.handleInitializeDom_ = function(e) {
-  if (this.numElementsToProcess_ == 0) {
-    // Find <meta> and <link> tags that specify canonical page images, compute
-    // image sizes with preloading and store them in element attributes.
-    var doc = goog.dom.getDocument();
-    var metaElements = doc.getElementsByTagName('meta');
-    var linkElements = doc.getElementsByTagName('link');
-    this.numElementsToProcess_ = metaElements.length + linkElements.length;
-    if (this.numElementsToProcess_ > 0) {
-      goog.array.forEach(metaElements, this.processMetaElement_, this);
-      goog.array.forEach(linkElements, this.processLinkElement_, this);
-      this.timeoutId_ = goog.Timer.callOnce(
-          goog.bind(this.dispatchEvent, this, DomEvent.Type.DOM_INITIALIZED),
-          DomController.LOAD_TIMEOUT_MS_);
-    } else {
-      this.dispatchEvent(DomEvent.Type.DOM_INITIALIZED);
-    }
-  }
-};
-
-
-/**
- * Tries to compute the size of the image specified in a <meta> element.
- * @param {Element} element The element to process.
- * @param {number} index Index of the element in the array.
- * @param {goog.array.ArrayLike} array The array.
- * @private
- */
-DomController.prototype.processMetaElement_ = function(element, index, array) {
-  var url = '';
-  if (element.hasAttribute('property')) {
-    switch (element.getAttribute('property').toLowerCase()) {
-      case 'og:image':
-        url = element.getAttribute('content');
-        var siblings = goog.dom.getChildren(goog.dom.getParentElement(element));
-        var width = this.getPropertyContent_(siblings, 'og:image:width');
-        var height = this.getPropertyContent_(siblings, 'og:image:height');
-        if (width > 0 && height > 0) {
-          element.setAttribute(DocumentImage.CustomAttribute.WIDTH, width);
-          element.setAttribute(DocumentImage.CustomAttribute.HEIGHT, height);
-        }
-        break;
-      case 'og:video':
-        var children = goog.dom.getChildren(goog.dom.getParentElement(element));
-        var width = this.getPropertyContent_(children, 'og:video:width');
-        var height = this.getPropertyContent_(children, 'og:video:height');
-        if (width > 0 && height > 0) {
-          element.setAttribute(DocumentVideo.CustomAttribute.WIDTH, width);
-          element.setAttribute(DocumentVideo.CustomAttribute.HEIGHT, height);
-        }
-    }
-  } else if (element.hasAttribute('name')) {
-    switch (element.getAttribute('name').toLowerCase()) {
-      case 'msapplication-tileimage':
-      case 'twitter:image':
-        url = element.getAttribute('content');
-    }
-  } else if (element.hasAttribute('itemprop')) {
-    switch (element.getAttribute('itemprop').toLowerCase()) {
-      case 'thumbnailurl':
-        url = element.getAttribute('href') ||
-            element.getAttribute('content');
-    }
-  }
-  this.maybeComputeAndStoreImageSize_(url, element);
-};
-
-
-/**
- * Tries to compute the size of the image specified in a <link> element.
- * @param {Element} element The element to process.
- * @param {number} index Index of the element in the array.
- * @param {goog.array.ArrayLike} array The array.
- * @private
- */
-DomController.prototype.processLinkElement_ = function(element, index, array) {
-  var url = '';
-  if (element.hasAttribute('rel')) {
-    switch (element.getAttribute('rel').toLowerCase()) {
-      case 'apple-touch-icon-precomposed':
-      case 'apple-touch-icon':
-      case 'image_src':
-        url = element.getAttribute('href');
-    }
-  } else if (element.hasAttribute('itemprop')) {
-    switch (element.getAttribute('itemprop').toLowerCase()) {
-      case 'thumbnailurl':
-        url = element.getAttribute('href') ||
-            element.getAttribute('content');
-    }
-  }
-  this.maybeComputeAndStoreImageSize_(url, element);
-};
-
-
-/**
- * Given a node list, tries to find an element with a 'property' attribute
- * set to a given value and returns the value of its 'content' attribute.
- * @param {Array|NodeList} elements Node list.
- * @param {string} property Expected property value.
- * @return {string}
- * @private
- */
-DomController.prototype.getPropertyContent_ = function(elements, property) {
-  for (var i = 0; i < elements.length; ++i) {
-    var element = elements[i];
-    if (element.hasAttribute('property') &&
-        element.getAttribute('property').toLowerCase() == property &&
-        element.hasAttribute('content')) {
-      return element.getAttribute('content');
-    }
-  }
-  return '';
-};
-
-
-/**
- * Tries to store the size of the element image in custom element tags.
- * @param {string} url Image url (empty if the element defines no image).
- * @param {!Element} element Element.
- * @private
- */
-DomController.prototype.maybeComputeAndStoreImageSize_ = function(
-    url, element) {
-  var CustomAttribute = DocumentImage.CustomAttribute;
-  if (url && (!element.hasAttribute(CustomAttribute.WIDTH) ||
-      !element.hasAttribute(CustomAttribute.HEIGHT))) {
-    this.computeImageSize_(url, goog.bind(this.storeImageSize_, this, element));
-  } else {
-    this.maybeDispatchDomInitialized_();
-  }
-};
-
-
-/**
- * Computes the image size with preloading and returns it via a callback.
- * @param {string} url Image url.
- * @param {!function(number, number)} callback A callback.
- * @private
- */
-DomController.prototype.computeImageSize_ = function(url, callback) {
-  var image = new Image();
-  this.eventHandler.listenOnce(image,
-      [goog.events.EventType.LOAD, goog.events.EventType.ERROR],
-      goog.bind(this.handleImageLoadOrError_, this, callback));
-  image.src = url;
-};
-
-
-/**
- * Handles image LOAD and ERROR events.
- * @param {!function(number, number)} callback A callback.
- * @param {goog.events.Event} e Image event.
- * @private
- */
-DomController.prototype.handleImageLoadOrError_ = function(callback, e) {
-  var image = /** @type {!Image} */ (e.target);
-  if (e.type == goog.events.EventType.LOAD) {
-    callback(image.naturalWidth, image.naturalHeight);
-  } else {
-    goog.log.warning(DomController.logger_,
-        'Failed to load image ' + image.src);
-  }
-  this.maybeDispatchDomInitialized_();
-};
-
-
-/**
- * Dispatches the DOM_INITIALIZED event if all elements have been processed.
- * @private
- */
-DomController.prototype.maybeDispatchDomInitialized_ = function() {
-  if (--this.numElementsToProcess_ == 0) {
-    if (this.timeoutId_ != -1) {
-      goog.Timer.clear(this.timeoutId_);
-      this.timeoutId_ = -1;
-    }
-    this.dispatchEvent(DomEvent.Type.DOM_INITIALIZED);
-  }
-};
-
-
-/**
- * Stores the image size in custom element attributes.
- * @param {!Element} element An element defining the image url.
- * @param {number} width Image width.
- * @param {number} height Image height.
- * @private
- */
-DomController.prototype.storeImageSize_ = function(element, width, height) {
-  var CustomAttribute = DocumentImage.CustomAttribute;
-  element.setAttribute(CustomAttribute.WIDTH, width);
-  element.setAttribute(CustomAttribute.HEIGHT, height);
-};
-
-});  // goog.scope