Add m-esr52 at 52.6.0

1 files changed, 85 insertions, 0 deletions

diff --git a/devtools/client/shared/zoom-keys.js b/devtools/client/shared/zoom-keys.js
new file mode 100644
index 000000000..80f4386fb
--- /dev/null
+++ b/devtools/client/shared/zoom-keys.js
@@ -0,0 +1,85 @@
+/* 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 { Ci } = require("chrome");
+const Services = require("Services");
+const { KeyShortcuts } = require("devtools/client/shared/key-shortcuts");
+
+const ZOOM_PREF = "devtools.toolbox.zoomValue";
+const MIN_ZOOM = 0.5;
+const MAX_ZOOM = 2;
+
+const {LocalizationHelper} = require("devtools/shared/l10n");
+const L10N = new LocalizationHelper("devtools/client/locales/toolbox.properties");
+
+/**
+ * Register generic keys to control zoom level of the given document.
+ * Used by both the toolboxes and the browser console.
+ *
+ * @param {DOMWindow} The window on which we should listent to key strokes and
+ *                    modify the zoom factor.
+ */
+exports.register = function (window) {
+  let shortcuts = new KeyShortcuts({
+    window
+  });
+  let docShell = window.QueryInterface(Ci.nsIInterfaceRequestor)
+    .getInterface(Ci.nsIWebNavigation)
+    .QueryInterface(Ci.nsIDocShell);
+  let contViewer = docShell.contentViewer;
+  let zoomValue = parseFloat(Services.prefs.getCharPref(ZOOM_PREF));
+  let zoomIn = function (name, event) {
+    setZoom(zoomValue + 0.1);
+    event.preventDefault();
+  };
+
+  let zoomOut = function (name, event) {
+    setZoom(zoomValue - 0.1);
+    event.preventDefault();
+  };
+
+  let zoomReset = function (name, event) {
+    setZoom(1);
+    event.preventDefault();
+  };
+
+  let setZoom = function (newValue) {
+    // cap zoom value
+    zoomValue = Math.max(newValue, MIN_ZOOM);
+    zoomValue = Math.min(zoomValue, MAX_ZOOM);
+
+    contViewer.fullZoom = zoomValue;
+
+    Services.prefs.setCharPref(ZOOM_PREF, zoomValue);
+  };
+
+  // Set zoom to whatever the last setting was.
+  setZoom(zoomValue);
+
+  shortcuts.on(L10N.getStr("toolbox.zoomIn.key"), zoomIn);
+  let zoomIn2 = L10N.getStr("toolbox.zoomIn2.key");
+  if (zoomIn2) {
+    shortcuts.on(zoomIn2, zoomIn);
+  }
+  let zoomIn3 = L10N.getStr("toolbox.zoomIn2.key");
+  if (zoomIn3) {
+    shortcuts.on(zoomIn3, zoomIn);
+  }
+
+  shortcuts.on(L10N.getStr("toolbox.zoomOut.key"),
+               zoomOut);
+  let zoomOut2 = L10N.getStr("toolbox.zoomOut2.key");
+  if (zoomOut2) {
+    shortcuts.on(zoomOut2, zoomOut);
+  }
+
+  shortcuts.on(L10N.getStr("toolbox.zoomReset.key"),
+               zoomReset);
+  let zoomReset2 = L10N.getStr("toolbox.zoomReset2.key");
+  if (zoomReset2) {
+    shortcuts.on(zoomReset2, zoomReset);
+  }
+};