DevTools: [Documentation] Update parser for WikiText

Source/devtools/front_end/documentation/DocumentationView.js

Index: Source/devtools/front_end/documentation/DocumentationView.js
diff --git a/Source/devtools/front_end/documentation/DocumentationView.js b/Source/devtools/front_end/documentation/DocumentationView.js
index 042f0a243dfb3d91978eae87abf3857b071e2a0b..52e13299c12b1faacffe8e9f7d34878dc99e843a 100644
--- a/Source/devtools/front_end/documentation/DocumentationView.js
+++ b/Source/devtools/front_end/documentation/DocumentationView.js
@@ -22,6 +22,7 @@ WebInspector.DocumentationView.showDocumentationURL = function(url, searchItem)
     if (!WebInspector.DocumentationView._view)
         WebInspector.DocumentationView._view = new WebInspector.DocumentationView();
     var view = WebInspector.DocumentationView._view;
+    view.element.removeChildren();
     WebInspector.inspectorView.showCloseableViewInDrawer("documentation", WebInspector.UIString("Documentation"), view);
     view.showDocumentation(url, searchItem);
 }
@@ -61,14 +62,18 @@ WebInspector.DocumentationView.prototype = {
             return;
         }
         var wikiMarkupText = pages[wikiKeys[0]]["revisions"]["0"]["*"];
-        var article = WebInspector.JSArticle.parse(wikiMarkupText);
+        try {
+            var article = WebInspector.JSArticle.parse(wikiMarkupText);

[lushnikov, 2014/09/09 12:40:46]

lets avoid varaibel hoisting and declare it outside of the try{ } block

[iliia, 2014/09/09 14:29:17]

Done.

+        } catch (error) {
+            this._createEmptyPage();

[lushnikov, 2014/09/09 12:40:46]

article = null;
console.error(error);

[iliia, 2014/09/09 14:29:17]

Done.

+        }
         if (!article) {
             this._createEmptyPage();
             return;
         }
 
-        var renderer = new WebInspector.DocumentationView.Renderer(article, searchItem);
         this.element.removeChildren();
+        var renderer = new WebInspector.DocumentationView.Renderer(article, searchItem);
         this.element.appendChild(renderer.renderJSArticle());
     },
 
@@ -214,7 +219,8 @@ WebInspector.DocumentationView.Renderer.prototype = {
                 liveUrl.href = examples[i].liveUrl;
                 liveUrl.textContent = WebInspector.UIString("Example");
             }
-            exampleDescription.appendChild(this._renderBlock(examples[i].description));
+            if (examples[i].description)
+                exampleDescription.appendChild(this._renderBlock(examples[i].description));
             var code = example.createChild("div", "documentation-example-code");
             code.classList.add("source-code");
             code.textContent = examples[i].code;
@@ -227,7 +233,7 @@ WebInspector.DocumentationView.Renderer.prototype = {
 
     /**
      * @param {!WebInspector.WikiParser.ArticleElement} article
-     * @return {!Element}
+     * @return {?Element}
      */
     _renderBlock: function(article)
     {