| 1 | // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | package org.chromium.content.browser; |
| 6 | |
| 7 | import org.chromium.base.CalledByNative; |
| 8 | import org.chromium.base.JNINamespace; |
| 9 | import org.chromium.base.ThreadUtils; |
| 10 | |
| 11 | /** |
| 12 | * Manages settings state for a ContentView. A ContentSettings instance is obtained |
| 13 | * from ContentViewCore.getContentSettings(). |
| 14 | */ |
| 15 | @JNINamespace("content") |
| 16 | public class ContentSettings { |
| 17 | |
| 18 | private static final String TAG = "ContentSettings"; |
| 19 | |
| 20 | // The native side of this object. Ownership is retained native-side by the WebContents |
| 21 | // instance that backs the associated ContentViewCore. |
| 22 | private int mNativeContentSettings = 0; |
| 23 | |
| 24 | private ContentViewCore mContentViewCore; |
| 25 | |
| 26 | /** |
| 27 | * Package constructor to prevent clients from creating a new settings |
| 28 | * instance. Must be called on the UI thread. |
| 29 | */ |
| 30 | ContentSettings(ContentViewCore contentViewCore, int nativeContentView) { |
| 31 | ThreadUtils.assertOnUiThread(); |
| 32 | mContentViewCore = contentViewCore; |
| 33 | mNativeContentSettings = nativeInit(nativeContentView); |
| 34 | assert mNativeContentSettings != 0; |
| 35 | } |
| 36 | |
| 37 | /** |
| 38 | * Notification from the native side that it is being destroyed. |
| 39 | * @param nativeContentSettings the native instance that is going away. |
| 40 | */ |
| 41 | @CalledByNative |
| 42 | private void onNativeContentSettingsDestroyed(int nativeContentSettings) { |
| 43 | assert mNativeContentSettings == nativeContentSettings; |
| 44 | mNativeContentSettings = 0; |
| 45 | } |
| 46 | |
| 47 | /** |
| 48 | * Return true if JavaScript is enabled. Must be called on the UI thread. |
| 49 | * |
| 50 | * @return True if JavaScript is enabled. |
| 51 | */ |
| 52 | public boolean getJavaScriptEnabled() { |
| 53 | ThreadUtils.assertOnUiThread(); |
| 54 | return mNativeContentSettings != 0 ? |
| 55 | nativeGetJavaScriptEnabled(mNativeContentSettings) : false; |
| 56 | } |
| 57 | |
| 58 | // Initialize the ContentSettings native side. |
| 59 | private native int nativeInit(int contentViewPtr); |
| 60 | |
| 61 | private native boolean nativeGetJavaScriptEnabled(int nativeContentSettings); |
| 62 | } |