1 files changed, 74 insertions, 0 deletions
diff --git a/devtools/client/memory/panel.js b/devtools/client/memory/panel.js
new file mode 100644
index 0000000000..e6143aafa4
--- /dev/null
+++ b/devtools/client/memory/panel.js
@@ -0,0 +1,74 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+const EventEmitter = require("resource://devtools/shared/event-emitter.js");
+const HeapAnalysesClient = require("resource://devtools/shared/heapsnapshot/HeapAnalysesClient.js");
+
+function MemoryPanel(iframeWindow, toolbox, commands) {
+  this.panelWin = iframeWindow;
+  this._toolbox = toolbox;
+  this._commands = commands;
+
+  const { BrowserLoader } = ChromeUtils.import(
+    "resource://devtools/shared/loader/browser-loader.js"
+  );
+  const browserRequire = BrowserLoader({
+    baseURI: "resource://devtools/client/memory/",
+    window: this.panelWin,
+  }).require;
+  this.initializer = browserRequire("devtools/client/memory/initializer");
+
+  this._onTargetAvailable = this._onTargetAvailable.bind(this);
+
+  EventEmitter.decorate(this);
+}
+
+MemoryPanel.prototype = {
+  async open() {
+    this.panelWin.gToolbox = this._toolbox;
+    this.panelWin.gHeapAnalysesClient = new HeapAnalysesClient();
+
+    await this.initializer.initialize(this._commands);
+
+    await this._commands.targetCommand.watchTargets({
+      types: [this._commands.targetCommand.TYPES.FRAME],
+      onAvailable: this._onTargetAvailable,
+    });
+
+    return this;
+  },
+
+  async _onTargetAvailable({ targetFront }) {
+    if (targetFront.isTopLevel) {
+      const front = await targetFront.getFront("memory");
+      await front.attach();
+      this.initializer.updateFront(front);
+    }
+  },
+
+  // DevToolPanel API
+
+  destroy() {
+    // Make sure this panel is not already destroyed.
+    if (this._destroyed) {
+      return;
+    }
+    this._destroyed = true;
+
+    this._commands.targetCommand.unwatchTargets({
+      types: [this._commands.targetCommand.TYPES.FRAME],
+      onAvailable: this._onTargetAvailable,
+    });
+
+    this.initializer.destroy();
+
+    this.panelWin.gHeapAnalysesClient.destroy();
+    this.panelWin = null;
+    this.emit("destroyed");
+  },
+};
+
+exports.MemoryPanel = MemoryPanel;