Added pref for snapshot document collapsed state

chrome/android/java/src/org/chromium/chrome/browser/NewTabPagePrefs.java

Index: chrome/android/java/src/org/chromium/chrome/browser/NewTabPagePrefs.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/NewTabPagePrefs.java b/chrome/android/java/src/org/chromium/chrome/browser/NewTabPagePrefs.java
new file mode 100644
index 0000000000000000000000000000000000000000..976226b2af1d5d0adc5f36aa10d36d40b8e67512
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/NewTabPagePrefs.java
@@ -0,0 +1,116 @@
+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.chrome.browser;
+
+import org.chromium.chrome.browser.profiles.Profile;
+import org.chromium.chrome.browser.ForeignSessionHelper.ForeignSession;
+
+/**
+ * This class allows Java code to read and modify preferences related to the NTP
+ */
+public class NewTabPagePrefs {
+    private int mNativeNewTabPagePrefs;
+
+    /**
+     * Initialize this class with the given profile.
+     * @param profile Profile that will be used for syncing.
+     */
+    public NewTabPagePrefs(Profile profile) {
+        mNativeNewTabPagePrefs = nativeInit(profile);
+    }
+
+    /**
+     * Clean up the C++ side of this class. After the call, this class instance shouldn't be used.
+     */
+    public void destroy() {
+        assert mNativeNewTabPagePrefs != 0;
+        nativeDestroy(mNativeNewTabPagePrefs);
+    }
+
+    /**
+     * Set snapshot document list collapsed or uncollapsed state in preferences.
+     * @param isCollapsed {@code True} Whether we want the snapshot documents list to be collapsed.
+     */
+    public void setSnapshotDocumentCollapsed(boolean isCollapsed) {
+        nativeSetSnapshotDocumentCollapsed(mNativeNewTabPagePrefs, isCollapsed);
+    }
+
+    /**
+     * Get the snapshot document list collapsed or uncollapsed state in preferences.
+     * @return {@code True} Whether the snapshot documnets list is collapsed.
+     */
+    public boolean getSnapshotDocumentCollapsed() {
+        return nativeGetSnapshotDocumentCollapsed(mNativeNewTabPagePrefs);
+    }
+
+    /**
+     * Set recently closed tabs list collapsed or uncollapsed state in preferences.
+     * @param isCollapsed {@code True} Whether we want the recently closed tabs list to be
+     * collapsed.
+     */
+    public void setRecentlyClosedTabsCollapsed(boolean isCollapsed) {
+        nativeSetRecentlyClosedTabsCollapsed(mNativeNewTabPagePrefs, isCollapsed);
+    }
+
+    /**
+     * Get the recently closed document list collapsed or uncollapsed state in preferences.
+     * @return {@code True} Whether the recently closed list is collapsed.
+     */
+    public boolean getRecentlyClosedTabsCollapsed() {
+        return nativeGetRecentlyClosedTabsCollapsed(mNativeNewTabPagePrefs);
+    }
+
+    /**
+     * Set sync promo collapsed or uncollapsed state in preferences.
+     * @param isCollapsed {@code True} Whether we want the sync promo to be collapsed.
+     */
+    public void setSyncPromoCollapsed(boolean isCollapsed) {
+        nativeSetSyncPromoCollapsed(mNativeNewTabPagePrefs, isCollapsed);
+    }
+
+    /**
+     * Get the sync promo collapsed or uncollapsed state in preferences.
+     * @return {@code True} Whether the snapshot documnets list is collapsed.
+     */
+    public boolean getSyncPromoCollapsed() {
+        return nativeGetSyncPromoCollapsed(mNativeNewTabPagePrefs);
+    }
+
+    /**
+     * Set the given session collapsed or uncollapsed in preferences.
+     * @param session     Session to set collapsed or uncollapsed.
+     * @param isCollapsed {@code True} iff we want the session to be collapsed.
+     */
+    public void setForeignSessionCollapsed(ForeignSession session, boolean isCollapsed) {
+        nativeSetForeignSessionCollapsed(mNativeNewTabPagePrefs, session.tag, isCollapsed);
+    }
+
+    /**
+     * Get the given session collapsed or uncollapsed state in preferences.
+     * @param  session Session to fetch collapsed state.
+     * @return         {@code True} if the session is collapsed, false if expanded.
+     */
+    public boolean getForeignSessionCollapsed(ForeignSession session) {
+        return nativeGetForeignSessionCollapsed(mNativeNewTabPagePrefs, session.tag);
+    }
+
+    private static native int nativeInit(Profile profile);
+    private static native void nativeDestroy(int nativeNewTabPagePrefs);
+    private static native void nativeSetSnapshotDocumentCollapsed(
+            int nativeNewTabPagePrefs, boolean isCollapsed);
+    private static native boolean nativeGetSnapshotDocumentCollapsed(
+            int nativeNewTabPagePrefs);
+    private static native void nativeSetRecentlyClosedTabsCollapsed(
+            int nativeNewTabPagePrefs, boolean isCollapsed);
+    private static native boolean nativeGetRecentlyClosedTabsCollapsed(
+            int nativeNewTabPagePrefs);
+    private static native void nativeSetSyncPromoCollapsed(int nativeNewTabPagePrefs,
+            boolean isCollapsed);
+    private static native boolean nativeGetSyncPromoCollapsed(int nativeNewTabPagePrefs);
+    private static native void nativeSetForeignSessionCollapsed(
+            int nativeNewTabPagePrefs, String sessionTag, boolean isCollapsed);
+    private static native boolean nativeGetForeignSessionCollapsed(
+            int nativeNewTabPagePrefs, String sessionTag);
+}