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      1 /*
      2  * Copyright 2009, The Android Open Source Project
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *  * Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  *  * Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "config.h"
     27 #include <PlatformBridge.h>
     28 
     29 #include "CookieClient.h"
     30 #include "Document.h"
     31 #include "FileSystemClient.h"
     32 #include "FrameView.h"
     33 #include "JNIUtility.h"
     34 #include "JavaSharedClient.h"
     35 #include "KeyGeneratorClient.h"
     36 #include "MemoryUsage.h"
     37 #include "PluginView.h"
     38 #include "RenderLayer.h"
     39 #include "RenderView.h"
     40 #include "Settings.h"
     41 #include "WebCookieJar.h"
     42 #include "WebRequestContext.h"
     43 #include "WebViewCore.h"
     44 #include "npruntime.h"
     45 
     46 #include <gui/SurfaceComposerClient.h>
     47 #include <ui/DisplayInfo.h>
     48 #include <ui/PixelFormat.h>
     49 #include <wtf/android/AndroidThreading.h>
     50 #include <wtf/MainThread.h>
     51 
     52 #include <algorithm>
     53 
     54 using namespace android;
     55 
     56 namespace WebCore {
     57 
     58 WTF::Vector<String> PlatformBridge::getSupportedKeyStrengthList()
     59 {
     60     KeyGeneratorClient* client = JavaSharedClient::GetKeyGeneratorClient();
     61     if (!client)
     62         return WTF::Vector<String>();
     63 
     64     return client->getSupportedKeyStrengthList();
     65 }
     66 
     67 String PlatformBridge::getSignedPublicKeyAndChallengeString(unsigned index, const String& challenge, const KURL& url)
     68 {
     69     KeyGeneratorClient* client = JavaSharedClient::GetKeyGeneratorClient();
     70     if (!client)
     71         return String();
     72 
     73     return client->getSignedPublicKeyAndChallengeString(index, challenge, url);
     74 }
     75 
     76 void PlatformBridge::setCookies(const Document* document, const KURL& url, const String& value)
     77 {
     78     std::string cookieValue(value.utf8().data());
     79     GURL cookieGurl(url.string().utf8().data());
     80     bool isPrivateBrowsing = document->settings() && document->settings()->privateBrowsingEnabled();
     81     WebCookieJar* cookieJar = WebCookieJar::get(isPrivateBrowsing);
     82     if (cookieJar->allowCookies())
     83         cookieJar->cookieStore()->SetCookie(cookieGurl, cookieValue);
     84 }
     85 
     86 String PlatformBridge::cookies(const Document* document, const KURL& url)
     87 {
     88     GURL cookieGurl(url.string().utf8().data());
     89     bool isPrivateBrowsing = document->settings() && document->settings()->privateBrowsingEnabled();
     90     WebCookieJar* cookieJar = WebCookieJar::get(isPrivateBrowsing);
     91     String cookieString;
     92     if (cookieJar->allowCookies()) {
     93         std::string cookies = cookieJar->cookieStore()->GetCookies(cookieGurl);
     94         cookieString = cookies.c_str();
     95     }
     96     return cookieString;
     97 }
     98 
     99 bool PlatformBridge::cookiesEnabled(const Document* document)
    100 {
    101     bool isPrivateBrowsing = document->settings() && document->settings()->privateBrowsingEnabled();
    102     return WebCookieJar::get(isPrivateBrowsing)->allowCookies();
    103 }
    104 
    105 NPObject* PlatformBridge::pluginScriptableObject(Widget* widget)
    106 {
    107     if (!widget->isPluginView())
    108         return 0;
    109 
    110     PluginView* pluginView = static_cast<PluginView*>(widget);
    111     return pluginView->getNPObject();
    112 }
    113 
    114 bool PlatformBridge::isWebViewPaused(const WebCore::FrameView* frameView)
    115 {
    116     android::WebViewCore* webViewCore = android::WebViewCore::getWebViewCore(frameView);
    117     return webViewCore->isPaused();
    118 }
    119 
    120 bool PlatformBridge::popupsAllowed(NPP)
    121 {
    122     return false;
    123 }
    124 
    125 String PlatformBridge::resolveFilePathForContentUri(const String& contentUri)
    126 {
    127     FileSystemClient* client = JavaSharedClient::GetFileSystemClient();
    128     return client->resolveFilePathForContentUri(contentUri);
    129 }
    130 
    131 int PlatformBridge::PlatformBridge::screenDepth()
    132 {
    133     android::DisplayInfo info;
    134     android::SurfaceComposerClient::getDisplayInfo(android::DisplayID(0), &info);
    135     return info.pixelFormatInfo.bitsPerPixel;
    136 }
    137 
    138 FloatRect PlatformBridge::screenRect()
    139 {
    140     android::DisplayInfo info;
    141     android::SurfaceComposerClient::getDisplayInfo(android::DisplayID(0), &info);
    142     return FloatRect(0.0, 0.0, info.w, info.h);
    143 }
    144 
    145 // The visible size on screen in document coordinate
    146 int PlatformBridge::screenWidthInDocCoord(const WebCore::FrameView* frameView)
    147 {
    148     android::WebViewCore* webViewCore = android::WebViewCore::getWebViewCore(frameView);
    149     return webViewCore->screenWidth();
    150 }
    151 
    152 int PlatformBridge::screenHeightInDocCoord(const WebCore::FrameView* frameView)
    153 {
    154     android::WebViewCore* webViewCore = android::WebViewCore::getWebViewCore(frameView);
    155     return webViewCore->screenHeight();
    156 }
    157 
    158 String PlatformBridge::computeDefaultLanguage()
    159 {
    160     String acceptLanguages = WebRequestContext::acceptLanguage();
    161     size_t length = acceptLanguages.find(',');
    162     if (length == std::string::npos)
    163         length = acceptLanguages.length();
    164     return acceptLanguages.substring(0, length);
    165 }
    166 
    167 void PlatformBridge::updateViewport(FrameView* frameView)
    168 {
    169     android::WebViewCore* webViewCore = android::WebViewCore::getWebViewCore(frameView);
    170     webViewCore->updateViewport();
    171 }
    172 
    173 void PlatformBridge::updateTextfield(FrameView* frameView, Node* nodePtr, bool changeToPassword, const WTF::String& text)
    174 {
    175     android::WebViewCore* webViewCore = android::WebViewCore::getWebViewCore(frameView);
    176     webViewCore->updateTextfield(nodePtr, changeToPassword, text);
    177 }
    178 
    179 void PlatformBridge::setScrollPosition(ScrollView* scrollView, int x, int y) {
    180     FrameView* frameView = scrollView->frameView();
    181     if (!frameView) return;
    182     // Check to make sure the view is the main FrameView.
    183     android::WebViewCore *webViewCore = android::WebViewCore::getWebViewCore(scrollView);
    184     if (webViewCore->mainFrame()->view() == scrollView) {
    185         x = std::max(0, std::min(frameView->contentsWidth(), x));
    186         y = std::max(0, std::min(frameView->contentsHeight(), y));
    187         webViewCore->scrollTo(x, y);
    188     }
    189 }
    190 
    191 int PlatformBridge::lowMemoryUsageMB()
    192 {
    193     return MemoryUsage::lowMemoryUsageMb();
    194 }
    195 
    196 int PlatformBridge::highMemoryUsageMB()
    197 {
    198     return MemoryUsage::highMemoryUsageMb();
    199 }
    200 
    201 int PlatformBridge::highUsageDeltaMB()
    202 {
    203     return MemoryUsage::highUsageDeltaMb();
    204 }
    205 
    206 int PlatformBridge::memoryUsageMB()
    207 {
    208     return MemoryUsage::memoryUsageMb(false);
    209 }
    210 
    211 int PlatformBridge::actualMemoryUsageMB()
    212 {
    213     return MemoryUsage::memoryUsageMb(true);
    214 }
    215 
    216 bool PlatformBridge::canSatisfyMemoryAllocation(long bytes)
    217 {
    218     JNIEnv* env = JSC::Bindings::getJNIEnv();
    219     jclass bridgeClass = env->FindClass("android/webkit/JniUtil");
    220     jmethodID method = env->GetStaticMethodID(bridgeClass, "canSatisfyMemoryAllocation", "(J)Z");
    221     jboolean canAllocate = env->CallStaticBooleanMethod(bridgeClass, method, static_cast<jlong>(bytes));
    222     env->DeleteLocalRef(bridgeClass);
    223 
    224     return canAllocate == JNI_TRUE;
    225 }
    226 
    227 }  // namespace WebCore
    228 
    229 
    230 // This is the implementation of AndroidThreading, which is declared in
    231 // JavaScriptCore/wtf/android/AndroidThreading.h. It is provided here, rather
    232 // than in its own source file, to avoid linker problems.
    233 //
    234 // By default, when building a shared library, the linker strips from static
    235 // libraries any compilation units which do not contain any code referenced from
    236 // that static library. Since
    237 // AndroidThreading::scheduleDispatchFunctionsOnMainThread is not referenced
    238 // from libwebcore.a, implementing it in its own compilation unit results in it
    239 // being stripped. This stripping can be avoided by using the linker option
    240 // --whole-archive for libwebcore.a, but this adds considerably to the size of
    241 // libwebcore.so.
    242 
    243 namespace WTF {
    244 
    245 // Callback in the main thread.
    246 static void timeoutFired(void*)
    247 {
    248     dispatchFunctionsFromMainThread();
    249 }
    250 
    251 void AndroidThreading::scheduleDispatchFunctionsOnMainThread()
    252 {
    253     JavaSharedClient::EnqueueFunctionPtr(timeoutFired, 0);
    254 }
    255 
    256 }  // namespace WTF
    257