Index: src/com/dom_distiller/client/SchemaOrgParserAccessor.java |
diff --git a/src/com/dom_distiller/client/SchemaOrgParserAccessor.java b/src/com/dom_distiller/client/SchemaOrgParserAccessor.java |
new file mode 100644 |
index 0000000000000000000000000000000000000000..27cfefc55bfc981a91d344776c9311ea36f3cf7e |
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+++ b/src/com/dom_distiller/client/SchemaOrgParserAccessor.java |
@@ -0,0 +1,178 @@ |
+// Copyright 2014 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+package com.dom_distiller.client; |
+ |
+import java.util.ArrayList; |
+import java.util.List; |
+ |
+import com.google.gwt.dom.client.Element; |
+ |
+/** |
+ * This class instantiates SchemaOrgParser and implements MarkupParser.Parser interface to provide |
+ * access to properties that SchemaOrgParser has parsed. |
+ */ |
+public class SchemaOrgParserAccessor implements MarkupParser.Parser { |
+ private final SchemaOrgParser parser; |
+ |
+ /** |
+ * The object that instantiates SchemaOrgParser and implements its MarkupParser.Parser |
+ * interface. |
+ */ |
+ public SchemaOrgParserAccessor(Element root) { |
+ parser = new SchemaOrgParser(root); |
+ } |
+ |
+ @Override |
+ public String getTitle() { |
+ String title = ""; |
+ List<SchemaOrgParser.ThingItem> itemScopes = parser.getItemScopes(); |
+ |
+ // Get the "headline" property of the first article that has it. |
+ for (int i = 0; i < itemScopes.size() && title.isEmpty(); i++) { |
+ SchemaOrgParser.ThingItem item = itemScopes.get(i); |
+ if (item.getType() == SchemaOrgParser.Type.ARTICLE) { |
cjhopman
2014/04/29 17:04:19
Iterating through the articles seems pretty common
kuan
2014/04/29 23:26:43
Done.
|
+ title = item.getStringProperty(SchemaOrgParser.HEADLINE_PROP); |
+ } |
+ } |
+ |
+ // If there's no "headline" property, use "name" property. |
+ for (int i = 0; i < itemScopes.size() && title.isEmpty(); i++) { |
+ SchemaOrgParser.ThingItem item = itemScopes.get(i); |
+ if (item.getType() == SchemaOrgParser.Type.ARTICLE) { |
+ title = item.getStringProperty(SchemaOrgParser.NAME_PROP); |
+ } |
+ } |
+ |
+ return title; |
+ } |
+ |
+ @Override |
+ public String getType() { |
+ // TODO(kuan): consolidate/standardize types returned from all 3 parsers in MarkupParser. |
+ // Returns ARTICLe if there's an article. |
+ return parser.findFirstArticle() != null ? SchemaOrgParser.Type.ARTICLE.toString() : ""; |
+ } |
+ |
+ @Override |
+ public String getUrl() { |
+ SchemaOrgParser.ArticleItem item = parser.findFirstArticle(); |
+ return item != null ? item.getStringProperty(SchemaOrgParser.URL_PROP) : ""; |
+ } |
+ |
+ @Override |
+ public MarkupParser.Image[] getImages() { |
+ List<SchemaOrgParser.ThingItem> itemScopes = parser.getItemScopes(); |
+ if (itemScopes.isEmpty()) return null; |
+ |
+ List<MarkupParser.Image> images = new ArrayList<MarkupParser.Image>(); |
+ boolean hasRepresentativeImage = false; |
+ MarkupParser.Image imageOfArticle = null; |
+ SchemaOrgParser.ImageItem associatedImageOfArticle = null; |
+ |
+ for (int i = 0; i < itemScopes.size(); i++) { |
+ SchemaOrgParser.ThingItem item = itemScopes.get(i); |
+ MarkupParser.Image image = null; |
+ if (item.getType() == SchemaOrgParser.Type.ARTICLE) { |
+ SchemaOrgParser.ArticleItem articleItem = (SchemaOrgParser.ArticleItem) item; |
+ // If article has an associated image or the "image" property, remember them for |
+ // now; they'll be added to the list later when the position in the list can be |
+ // determined. |
+ if (associatedImageOfArticle == null) { |
+ associatedImageOfArticle = articleItem.getRepresentativeImageItem(); |
+ if (associatedImageOfArticle != null) continue; |
+ } |
+ image = articleItem.getImage(); |
+ if (image == null) continue; |
+ if (imageOfArticle == null) { |
+ imageOfArticle = image; |
+ } else { |
+ images.add(image); |
+ } |
+ } else if (item.getType() == SchemaOrgParser.Type.IMAGE) { |
+ SchemaOrgParser.ImageItem imageItem = (SchemaOrgParser.ImageItem) item; |
+ image = imageItem.getImage(); |
+ // Insert |image| at beginning of list if it's the first image that's |
+ // representative of page or it's the associated image of the first article. |
+ if (!hasRepresentativeImage && (imageItem == associatedImageOfArticle || |
+ imageItem.isRepresentativeOfPage())) { |
+ hasRepresentativeImage = true; |
+ images.add(0, image); |
+ } else { |
+ images.add(image); |
+ } |
+ } |
+ } |
+ |
+ // Prepend |imageOfArticle| to list if there's no image representative of page; append it |
+ // otherwise. |
+ if (imageOfArticle != null) { |
+ if (!hasRepresentativeImage) images.add(0, imageOfArticle); |
+ else images.add(imageOfArticle); |
+ } |
+ |
+ if (images.isEmpty()) return null; |
+ |
+ return images.toArray(new MarkupParser.Image[images.size()]); |
+ } |
+ |
+ @Override |
+ public String getDescription() { |
+ SchemaOrgParser.ArticleItem item = parser.findFirstArticle(); |
+ return item != null ? item.getStringProperty(SchemaOrgParser.DESCRIPTION_PROP) : ""; |
+ } |
+ |
+ @Override |
+ public String getPublisher() { |
+ // Returns either the "publisher" or "copyrightHolder" property of the first article. |
+ String publisher = ""; |
+ SchemaOrgParser.ArticleItem article = parser.findFirstArticle(); |
+ if (article != null) { |
+ publisher = article.getPersonOrOrganizationName(SchemaOrgParser.PUBLISHER_PROP); |
+ if (publisher.isEmpty()) { |
+ publisher = article.getPersonOrOrganizationName( |
+ SchemaOrgParser.COPYRIGHT_HOLDER_PROP); |
+ } |
+ } |
+ return publisher; |
+ } |
+ |
+ @Override |
+ public String getCopyright() { |
+ // Returns a concatenated string of copyright year and copyright holder of the first article |
+ // that has these properties, delimited by a whitespace. |
+ SchemaOrgParser.ArticleItem item = parser.findFirstArticle(); |
+ if (item == null) return ""; |
+ String copyright = SchemaOrgParser.concat( |
+ item.getStringProperty(SchemaOrgParser.COPYRIGHT_YEAR_PROP), |
+ item.getPersonOrOrganizationName(SchemaOrgParser.COPYRIGHT_HOLDER_PROP)); |
+ return copyright.isEmpty() ? copyright : "Copyright " + copyright; |
+ } |
+ |
+ @Override |
+ public String getAuthor() { |
+ String author = ""; |
+ SchemaOrgParser.ArticleItem item = parser.findFirstArticle(); |
+ if (item != null) { |
+ author = item.getPersonOrOrganizationName(SchemaOrgParser.AUTHOR_PROP); |
+ // If there's no "author" property, use "creator" property. |
+ if (author.isEmpty()) { |
+ author = item.getPersonOrOrganizationName(SchemaOrgParser.CREATOR_PROP); |
+ } |
+ } |
+ // Otherwise, use "rel=author" tag. |
+ return author.isEmpty() ? parser.getAuthorFromRel() : author; |
+ } |
+ |
+ @Override |
+ public MarkupParser.Article getArticle() { |
+ SchemaOrgParser.ArticleItem item = parser.findFirstArticle(); |
+ return item != null ? item.getArticle() : null; |
+ } |
+ |
+ @Override |
+ public boolean optOut() { |
+ return false; |
+ } |
+} |