DevTools: only show one source map infobar at a time

third_party/WebKit/Source/devtools/front_end/sources/JavaScriptSourceFrame.js

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 1187 matching lines @@
     var oldScriptFile = this._scriptFileForDebuggerModel.get(debuggerModel);
     var newScriptFile = Bindings.debuggerWorkspaceBinding.scriptFile(this._debuggerSourceCode, debuggerModel);
     this._scriptFileForDebuggerModel.delete(debuggerModel);
     if (oldScriptFile) {
       oldScriptFile.removeEventListener(Bindings.ResourceScriptFile.Events.DidMergeToVM, this._didMergeToVM, this);
       oldScriptFile.removeEventListener(
           Bindings.ResourceScriptFile.Events.DidDivergeFromVM, this._didDivergeFromVM, this);
       if (this._muted && !this.uiSourceCode().isDirty())
         this._restoreBreakpointsIfConsistentScripts();
     }
-    if (newScriptFile)
-      this._scriptFileForDebuggerModel.set(debuggerModel, newScriptFile);
+    if (!newScriptFile)
+      return;
+    this._scriptFileForDebuggerModel.set(debuggerModel, newScriptFile);
+    newScriptFile.addEventListener(Bindings.ResourceScriptFile.Events.DidMergeToVM, this._didMergeToVM, this);
+    newScriptFile.addEventListener(Bindings.ResourceScriptFile.Events.DidDivergeFromVM, this._didDivergeFromVM, this);
+    if (this.loaded)
+      newScriptFile.checkMapping();
+    this._showSourceMapInfobar(newScriptFile.hasSourceMapURL());
+  }
 
-    if (newScriptFile) {
-      newScriptFile.addEventListener(Bindings.ResourceScriptFile.Events.DidMergeToVM, this._didMergeToVM, this);
-      newScriptFile.addEventListener(Bindings.ResourceScriptFile.Events.DidDivergeFromVM, this._didDivergeFromVM, this);
-      if (this.loaded)
-        newScriptFile.checkMapping();
-      if (newScriptFile.hasSourceMapURL()) {
-        var sourceMapInfobar = UI.Infobar.create(
-            UI.Infobar.Type.Info, Common.UIString('Source Map detected.'),
-            Common.settings.createSetting('sourceMapInfobarDisabled', false));
-        if (sourceMapInfobar) {
-          sourceMapInfobar.createDetailsRowMessage(Common.UIString(
-              'Associated files should be added to the file tree. You can debug these resolved source files as regular JavaScript files.'));
-          sourceMapInfobar.createDetailsRowMessage(Common.UIString(
-              'Associated files are available via file tree or %s.',
-              UI.shortcutRegistry.shortcutTitleForAction('quickOpen.show')));
-          this.attachInfobars([sourceMapInfobar]);
-        }
+  /**
+   * @param {boolean} show
+   */
+  _showSourceMapInfobar(show) {
+    if (this._sourceMapInfobar) {
+      if (!show) {
+        this._sourceMapInfobar.dispose();
+        delete this._sourceMapInfobar;
       }
+      return;
+    }
+    this._sourceMapInfobar = UI.Infobar.create(
+        UI.Infobar.Type.Info, Common.UIString('Source Map detected.'),
+        Common.settings.createSetting('sourceMapInfobarDisabled', false));
+    if (this._sourceMapInfobar) {
+      this._sourceMapInfobar.createDetailsRowMessage(Common.UIString(
+          'Associated files should be added to the file tree. You can debug these resolved source files as regular JavaScript files.'));
+      this._sourceMapInfobar.createDetailsRowMessage(Common.UIString(
+          'Associated files are available via file tree or %s.',
+          UI.shortcutRegistry.shortcutTitleForAction('quickOpen.show')));
+      this._sourceMapInfobar.setCloseCallback(() => delete this._sourceMapInfobar);
+      this.attachInfobars([this._sourceMapInfobar]);
     }
   }
 
   /**
    * @override
    */
   onTextEditorContentSet() {
     super.onTextEditorContentSet();
     if (this._executionLocation)
       this.setExecutionLocation(this._executionLocation);
@@ skipping 249 matching lines @@
       return;
     this.bookmark.clear();
     this.bookmark = null;
   }
 };
 
 Sources.JavaScriptSourceFrame.BreakpointDecoration.bookmarkSymbol = Symbol('bookmark');
 Sources.JavaScriptSourceFrame.BreakpointDecoration._elementSymbolForTest = Symbol('element');
 
 Sources.JavaScriptSourceFrame.continueToLocationDecorationSymbol = Symbol('bookmark');