1 files changed, 100 insertions, 0 deletions
diff --git a/devtools/client/responsive/components/DevicePixelRatioMenu.js b/devtools/client/responsive/components/DevicePixelRatioMenu.js
new file mode 100644
index 0000000000..7ad37b8e03
--- /dev/null
+++ b/devtools/client/responsive/components/DevicePixelRatioMenu.js
@@ -0,0 +1,100 @@
+/* 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/. */
+
+/* eslint-env browser */
+
+"use strict";
+
+const {
+  PureComponent,
+} = require("resource://devtools/client/shared/vendor/react.js");
+const dom = require("resource://devtools/client/shared/vendor/react-dom-factories.js");
+const PropTypes = require("resource://devtools/client/shared/vendor/react-prop-types.js");
+
+const {
+  getStr,
+  getFormatStr,
+} = require("resource://devtools/client/responsive/utils/l10n.js");
+const Types = require("resource://devtools/client/responsive/types.js");
+
+loader.lazyRequireGetter(
+  this,
+  "showMenu",
+  "resource://devtools/client/shared/components/menu/utils.js",
+  true
+);
+
+const PIXEL_RATIO_PRESET = [1, 2, 3];
+
+class DevicePixelRatioMenu extends PureComponent {
+  static get propTypes() {
+    return {
+      devices: PropTypes.shape(Types.devices).isRequired,
+      displayPixelRatio: PropTypes.number.isRequired,
+      onChangePixelRatio: PropTypes.func.isRequired,
+      selectedDevice: PropTypes.string.isRequired,
+      selectedPixelRatio: PropTypes.number.isRequired,
+    };
+  }
+
+  constructor(props) {
+    super(props);
+    this.onShowDevicePixelMenu = this.onShowDevicePixelMenu.bind(this);
+  }
+
+  onShowDevicePixelMenu(event) {
+    const { displayPixelRatio, onChangePixelRatio, selectedPixelRatio } =
+      this.props;
+
+    const menuItems = PIXEL_RATIO_PRESET.map(value => {
+      return {
+        label: getFormatStr("responsive.devicePixelRatioOption", value),
+        type: "checkbox",
+        checked:
+          selectedPixelRatio > 0
+            ? selectedPixelRatio === value
+            : displayPixelRatio === value,
+        click: () => onChangePixelRatio(+value),
+      };
+    });
+
+    showMenu(menuItems, {
+      button: event.target,
+    });
+  }
+
+  render() {
+    const { devices, displayPixelRatio, selectedDevice, selectedPixelRatio } =
+      this.props;
+
+    const isDisabled =
+      devices.listState !== Types.loadableState.LOADED || selectedDevice !== "";
+
+    let title;
+    if (isDisabled) {
+      title = getFormatStr("responsive.devicePixelRatio.auto", selectedDevice);
+    } else {
+      title = getStr("responsive.changeDevicePixelRatio");
+    }
+
+    return dom.button(
+      {
+        id: "device-pixel-ratio-menu",
+        className: "devtools-button devtools-dropdown-button",
+        disabled: isDisabled,
+        title,
+        onClick: this.onShowDevicePixelMenu,
+      },
+      dom.span(
+        { className: "title" },
+        getFormatStr(
+          "responsive.devicePixelRatioOption",
+          selectedPixelRatio || displayPixelRatio
+        )
+      )
+    );
+  }
+}
+
+module.exports = DevicePixelRatioMenu;