Bug 991376 - The variables inspection popup shouldn't opening when hovering js literals, r=past

browser/devtools/debugger/debugger-panes.js

@@ -1811,6 +1811,12 @@ VariableBubbleView.prototype = {
     this._editorContainer.removeEventListener("mouseleave", this._onMouseLeave, false);
   },
 
+  /**
+   * Specifies whether literals can be (redundantly) inspected in a popup.
+   * This behavior is deprecated, but still tested in a few places.
+   */
+  _ignoreLiterals: true,
+
   /**
    * Searches for an identifier underneath the specified position in the
    * source editor, and if found, opens a VariablesView inspection popup.
@@ -1850,7 +1856,8 @@ VariableBubbleView.prototype = {
     let identifierInfo = parsedSource.getIdentifierAt({
       line: scriptLine + 1,
       column: scriptColumn,
-      scriptIndex: scriptInfo.index
+      scriptIndex: scriptInfo.index,
+      ignoreLiterals: this._ignoreLiterals
     });
 
     // If the info is null, we're not hovering any identifier.

browser/devtools/debugger/test/browser.ini

@@ -274,6 +274,7 @@ support-files =
 [browser_dbg_variables-view-popup-12.js]
 [browser_dbg_variables-view-popup-13.js]
 [browser_dbg_variables-view-popup-14.js]
+[browser_dbg_variables-view-popup-15.js]
 [browser_dbg_variables-view-reexpand-01.js]
 [browser_dbg_variables-view-reexpand-02.js]
 [browser_dbg_variables-view-webidl.js]

browser/devtools/debugger/test/browser_dbg_variables-view-popup-01.js

@@ -15,6 +15,8 @@ function test() {
     let bubble = win.DebuggerView.VariableBubble;
     let tooltip = bubble._tooltip.panel;
 
+    bubble._ignoreLiterals = false;
+
     function verifyContents(textContent, className) {
       is(tooltip.querySelectorAll(".variables-view-container").length, 0,
         "There should be no variables view containers added to the tooltip.");

browser/devtools/debugger/test/browser_dbg_variables-view-popup-15.js

@@ -0,0 +1,33 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * Tests opening the variable inspection popup directly on literals.
+ */
+
+const TAB_URL = EXAMPLE_URL + "doc_frame-parameters.html";
+
+function test() {
+  Task.spawn(function() {
+    let [tab, debuggee, panel] = yield initDebugger(TAB_URL);
+    let win = panel.panelWin;
+    let bubble = win.DebuggerView.VariableBubble;
+    let tooltip = bubble._tooltip.panel;
+
+    // Allow this generator function to yield first.
+    executeSoon(() => debuggee.start());
+    yield waitForSourceAndCaretAndScopes(panel, ".html", 24);
+
+    yield openVarPopup(panel, { line: 15, ch: 12 });
+    ok(true, "The variable inspection popup was shown for the real variable.");
+
+    once(tooltip, "popupshown").then(() => {
+      ok(false, "The variable inspection popup shouldn't have been opened.");
+    });
+
+    reopenVarPopup(panel, { line: 17, ch: 27 });
+    yield waitForTime(1000);
+
+    yield resumeDebuggerThenCloseAndFinish(panel);
+  });
+}

browser/devtools/shared/Parser.jsm

@@ -136,8 +136,8 @@ SyntaxTreesPool.prototype = {
   /**
    * @see SyntaxTree.prototype.getIdentifierAt
    */
-  getIdentifierAt: function({ line, column, scriptIndex }) {
-    return this._call("getIdentifierAt", scriptIndex, line, column)[0];
+  getIdentifierAt: function({ line, column, scriptIndex, ignoreLiterals }) {
+    return this._call("getIdentifierAt", scriptIndex, line, column, ignoreLiterals)[0];
   },
 
   /**
@@ -256,11 +256,13 @@ SyntaxTree.prototype = {
    *        The line in the source.
    * @param number aColumn
    *        The column in the source.
+   * @param boolean aIgnoreLiterals
+   *        Specifies if alone literals should be ignored.
    * @return object
    *         An object containing identifier information as { name, location,
    *         evalString } properties, or null if nothing is found.
    */
-  getIdentifierAt: function(aLine, aColumn) {
+  getIdentifierAt: function(aLine, aColumn, aIgnoreLiterals) {
     let info = null;
 
     SyntaxTreeVisitor.walk(this.AST, {
@@ -286,7 +288,9 @@ SyntaxTree.prototype = {
        * @param Node aNode
        */
       onLiteral: function(aNode) {
-        this.onIdentifier(aNode);
+        if (!aIgnoreLiterals) {
+          this.onIdentifier(aNode);
+        }
       },
 
       /**
@@ -705,11 +709,7 @@ let ParserHelpers = {
       case "Identifier":
         return aNode.name;
       case "Literal":
-        if (typeof aNode.value == "string") {
-          return "\"" + aNode.value + "\"";
-        } else {
-          return aNode.value + "";
-        }
+        return uneval(aNode.value);
       default:
         return "";
     }