1 files changed, 106 insertions, 0 deletions
diff --git a/application/basilisk/base/content/browser-compacttheme.js b/application/basilisk/base/content/browser-compacttheme.js
new file mode 100644
index 000000000..87095df51
--- /dev/null
+++ b/application/basilisk/base/content/browser-compacttheme.js
@@ -0,0 +1,106 @@
+/* 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/. */
+
+/**
+ * Listeners for the compact theme.  This adds an extra stylesheet
+ * to browser.xul if a pref is set and no other themes are applied.
+ */
+var CompactTheme = {
+  styleSheetLocation: "chrome://browser/skin/compacttheme.css",
+  styleSheet: null,
+  initialized: false,
+
+  get isStyleSheetEnabled() {
+    return this.styleSheet && !this.styleSheet.sheet.disabled;
+  },
+
+  get isThemeCurrentlyApplied() {
+    let theme = LightweightThemeManager.currentTheme;
+    return theme && (
+           theme.id == "firefox-compact-dark@mozilla.org" ||
+           theme.id == "firefox-compact-light@mozilla.org");
+  },
+
+  init() {
+    this.initialized = true;
+    Services.obs.addObserver(this, "lightweight-theme-styling-update", false);
+
+    if (this.isThemeCurrentlyApplied) {
+      this._toggleStyleSheet(true);
+    }
+  },
+
+  createStyleSheet() {
+    let styleSheetAttr = `href="${this.styleSheetLocation}" type="text/css"`;
+    this.styleSheet = document.createProcessingInstruction(
+      "xml-stylesheet", styleSheetAttr);
+    this.styleSheet.addEventListener("load", this);
+    document.insertBefore(this.styleSheet, document.documentElement);
+    this.styleSheet.sheet.disabled = true;
+  },
+
+  observe(subject, topic, data) {
+    if (topic == "lightweight-theme-styling-update") {
+      let newTheme = JSON.parse(data);
+      if (newTheme && (
+          newTheme.id == "firefox-compact-light@mozilla.org" ||
+          newTheme.id == "firefox-compact-dark@mozilla.org")) {
+        // We are using the theme ID on this object instead of always referencing
+        // LightweightThemeManager.currentTheme in case this is a preview
+        this._toggleStyleSheet(true);
+      } else {
+        this._toggleStyleSheet(false);
+      }
+
+    }
+  },
+
+  handleEvent(e) {
+    if (e.type === "load") {
+      this.styleSheet.removeEventListener("load", this);
+      this.refreshBrowserDisplay();
+    }
+  },
+
+  refreshBrowserDisplay() {
+    // Don't touch things on the browser if gBrowserInit.onLoad hasn't
+    // yet fired.
+    if (this.initialized) {
+      gBrowser.tabContainer._positionPinnedTabs();
+    }
+  },
+
+  _toggleStyleSheet(enabled) {
+    let wasEnabled = this.isStyleSheetEnabled;
+    if (enabled) {
+      // The stylesheet may not have been created yet if it wasn't
+      // needed on initial load.  Make it now.
+      if (!this.styleSheet) {
+        this.createStyleSheet();
+      }
+      this.styleSheet.sheet.disabled = false;
+      this.refreshBrowserDisplay();
+    } else if (!enabled && wasEnabled) {
+      this.styleSheet.sheet.disabled = true;
+      this.refreshBrowserDisplay();
+    }
+  },
+
+  uninit() {
+    Services.obs.removeObserver(this, "lightweight-theme-styling-update");
+    if (this.styleSheet) {
+      this.styleSheet.removeEventListener("load", this);
+    }
+    this.styleSheet = null;
+  }
+};
+
+#ifdef INSTALL_COMPACT_THEMES
+// If the compact theme is going to be applied in gBrowserInit.onLoad,
+// then preload it now.  This prevents a flash of unstyled content where the
+// normal theme is applied while the compact theme stylesheet is loading.
+if (this != Services.appShell.hiddenDOMWindow && CompactTheme.isThemeCurrentlyApplied) {
+  CompactTheme.createStyleSheet();
+}
+#endif