DevTools: Changes View

third_party/WebKit/Source/devtools/front_end/workspace_diff/WorkspaceDiff.js

Index: third_party/WebKit/Source/devtools/front_end/workspace_diff/WorkspaceDiff.js
diff --git a/third_party/WebKit/Source/devtools/front_end/workspace_diff/WorkspaceDiff.js b/third_party/WebKit/Source/devtools/front_end/workspace_diff/WorkspaceDiff.js
index d062c3a3cbb82c7a31870a163a084e5a078cd4da..f6238b9cac84c56e1748560885695c0497f6343c 100644
--- a/third_party/WebKit/Source/devtools/front_end/workspace_diff/WorkspaceDiff.js
+++ b/third_party/WebKit/Source/devtools/front_end/workspace_diff/WorkspaceDiff.js
@@ -3,10 +3,28 @@
 // found in the LICENSE file.
 
 
-WorkspaceDiff.WorkspaceDiff = class {
-  constructor() {
+WorkspaceDiff.WorkspaceDiff = class extends Common.Object {
+  /**
+   * @param {!Workspace.Workspace} workspace
+   */
+  constructor(workspace) {
+    super();
+    this._workspace = workspace;
     /** @type {!WeakMap<!Workspace.UISourceCode, !WorkspaceDiff.WorkspaceDiff.UISourceCodeDiff>} */
     this._uiSourceCodeDiffs = new WeakMap();
+
+    /** @type {!Map<!Workspace.UISourceCode, number>} */
+    this._loadingUISourceCodes = new Map();
+    this._loadingUISourceCodesId = 0;
+
+    /** @type {!Set<!Workspace.UISourceCode>} */
+    this._modifiedUISourceCodes = new Set();
+    this._workspace.addEventListener(Workspace.Workspace.Events.WorkingCopyChanged, this._uiSourceCodeChanged, this);
+    this._workspace.addEventListener(Workspace.Workspace.Events.WorkingCopyCommitted, this._uiSourceCodeChanged, this);
+    this._workspace.addEventListener(Workspace.Workspace.Events.UISourceCodeAdded, this._uiSourceCodeAdded, this);
+    this._workspace.addEventListener(Workspace.Workspace.Events.UISourceCodeRemoved, this._uiSourceCodeRemoved, this);
+    this._workspace.addEventListener(Workspace.Workspace.Events.ProjectRemoved, this._projectRemoved, this);
+    this._workspace.uiSourceCodes().forEach(this._refreshUISourceCode.bind(this));
   }
 
   /**
@@ -36,6 +54,13 @@ WorkspaceDiff.WorkspaceDiff = class {
   }
 
   /**
+   * @return {!Array<!Workspace.UISourceCode>}
+   */
+  modifiedUISourceCodes() {
+    return Array.from(this._modifiedUISourceCodes);
+  }
+
+  /**
    * @param {!Workspace.UISourceCode} uiSourceCode
    * @return {!WorkspaceDiff.WorkspaceDiff.UISourceCodeDiff}
    */
@@ -44,6 +69,91 @@ WorkspaceDiff.WorkspaceDiff = class {
       this._uiSourceCodeDiffs.set(uiSourceCode, new WorkspaceDiff.WorkspaceDiff.UISourceCodeDiff(uiSourceCode));
     return this._uiSourceCodeDiffs.get(uiSourceCode);
   }
+
+  /**
+   * @param {!Common.Event} event
+   */
+  _uiSourceCodeChanged(event) {
+    var uiSourceCode = /** @type {!Workspace.UISourceCode} */ (event.data.uiSourceCode);
+    this._refreshUISourceCode(uiSourceCode);
+  }
+
+  /**
+   * @param {!Common.Event} event
+   */
+  _uiSourceCodeAdded(event) {
+    var uiSourceCode = /** @type {!Workspace.UISourceCode} */ (event.data);
+    this._refreshUISourceCode(uiSourceCode);
+  }
+
+  /**
+   * @param {!Common.Event} event
+   */
+  _uiSourceCodeRemoved(event) {
+    var uiSourceCode = /** @type {!Workspace.UISourceCode} */ (event.data);
+    this._markAsUnmodified(uiSourceCode);
+  }
+
+  /**
+   * @param {!Common.Event} event
+   */
+  _projectRemoved(event) {
+    var project = /** @type {!Workspace.Project} */ (event.data);
+    for (var uiSourceCode of project.uiSourceCodes())
+      this._markAsUnmodified(uiSourceCode);
+  }
+
+  /**
+   * @param {!Workspace.UISourceCode} uiSourceCode
+   */
+  _markAsUnmodified(uiSourceCode) {
+    this._loadingUISourceCodes.delete(uiSourceCode);
+    if (this._modifiedUISourceCodes.delete(uiSourceCode))
+      this.emit(new WorkspaceDiff.UnmodifiedEvent(uiSourceCode));
+  }
+
+  /**
+   * @param {!Workspace.UISourceCode} uiSourceCode
+   */
+  _markAsModified(uiSourceCode) {
+    this._loadingUISourceCodes.delete(uiSourceCode);
+    if (this._modifiedUISourceCodes.has(uiSourceCode))
+      return;
+    this._modifiedUISourceCodes.add(uiSourceCode);
+    this.emit(new WorkspaceDiff.ModifiedEvent(uiSourceCode));
+  }
+
+  /**
+   * @param {!Workspace.UISourceCode} uiSourceCode
+   */
+  async _refreshUISourceCode(uiSourceCode) {
+    if (uiSourceCode.project().type() !== Workspace.projectTypes.Network) {
+      this._markAsUnmodified(uiSourceCode);
+      return;
+    }
+    if (uiSourceCode.isDirty()) {
+      this._markAsModified(uiSourceCode);
+      return;
+    }
+    if (!uiSourceCode.history().length) {
+      this._markAsUnmodified(uiSourceCode);
+      return;
+    }
+
+    var id = this._loadingUISourceCodesId++;
+    this._loadingUISourceCodes.set(uiSourceCode, id);
+    var originalContent = await uiSourceCode.requestOriginalContent();
+    if (this._loadingUISourceCodes.get(uiSourceCode) !== id)
+      return;
+    var content = await uiSourceCode.requestContent();
+    if (this._loadingUISourceCodes.get(uiSourceCode) !== id)
+      return;
+
+    if (content !== null && originalContent !== null && content !== originalContent)
+      this._markAsModified(uiSourceCode);
+    else
+      this._markAsUnmodified(uiSourceCode);
+  }
 };
 
 WorkspaceDiff.WorkspaceDiff.UISourceCodeDiff = class extends Common.Object {
@@ -108,11 +218,35 @@ WorkspaceDiff.WorkspaceDiff.UISourceCodeDiff = class extends Common.Object {
 WorkspaceDiff.DiffChangedEvent = class {};
 
 /**
+ * @implements {Common.Emittable}
+ */
+WorkspaceDiff.UnmodifiedEvent = class {
+  /**
+   * @param {!Workspace.UISourceCode} uiSourceCode
+   */
+  constructor(uiSourceCode) {
+    this.uiSourceCode = uiSourceCode;
+  }
+};
+
+/**
+ * @implements {Common.Emittable}
+ */
+WorkspaceDiff.ModifiedEvent = class {
+  /**
+   * @param {!Workspace.UISourceCode} uiSourceCode
+   */
+  constructor(uiSourceCode) {
+    this.uiSourceCode = uiSourceCode;
+  }
+};
+
+/**
  * @return {!WorkspaceDiff.WorkspaceDiff}
  */
 WorkspaceDiff.workspaceDiff = function() {
   if (!WorkspaceDiff.WorkspaceDiff._instance)
-    WorkspaceDiff.WorkspaceDiff._instance = new WorkspaceDiff.WorkspaceDiff();
+    WorkspaceDiff.WorkspaceDiff._instance = new WorkspaceDiff.WorkspaceDiff(Workspace.workspace);
   return WorkspaceDiff.WorkspaceDiff._instance;
 };