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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/ISurfaceComposer.h>
     47 #include <gui/SurfaceComposerClient.h>
     48 #include <ui/DisplayInfo.h>
     49 #include <ui/PixelFormat.h>
     50 #include <wtf/android/AndroidThreading.h>
     51 #include <wtf/MainThread.h>
     52 
     53 #include <algorithm>
     54 
     55 using namespace android;
     56 
     57 namespace WebCore {
     58 
     59 WTF::Vector<String> PlatformBridge::getSupportedKeyStrengthList()
     60 {
     61     KeyGeneratorClient* client = JavaSharedClient::GetKeyGeneratorClient();
     62     if (!client)
     63         return WTF::Vector<String>();
     64 
     65     return client->getSupportedKeyStrengthList();
     66 }
     67 
     68 String PlatformBridge::getSignedPublicKeyAndChallengeString(unsigned index, const String& challenge, const KURL& url)
     69 {
     70     KeyGeneratorClient* client = JavaSharedClient::GetKeyGeneratorClient();
     71     if (!client)
     72         return String();
     73 
     74     return client->getSignedPublicKeyAndChallengeString(index, challenge, url);
     75 }
     76 
     77 void PlatformBridge::setCookies(const Document* document, const KURL& url, const String& value)
     78 {
     79     std::string cookieValue(value.utf8().data());
     80     GURL cookieGurl(url.string().utf8().data());
     81     bool isPrivateBrowsing = document->settings() && document->settings()->privateBrowsingEnabled();
     82     WebCookieJar* cookieJar = WebCookieJar::get(isPrivateBrowsing);
     83     if (cookieJar->allowCookies())
     84         cookieJar->cookieStore()->SetCookie(cookieGurl, cookieValue);
     85 }
     86 
     87 String PlatformBridge::cookies(const Document* document, const KURL& url)
     88 {
     89     GURL cookieGurl(url.string().utf8().data());
     90     bool isPrivateBrowsing = document->settings() && document->settings()->privateBrowsingEnabled();
     91     WebCookieJar* cookieJar = WebCookieJar::get(isPrivateBrowsing);
     92     String cookieString;
     93     if (cookieJar->allowCookies()) {
     94         std::string cookies = cookieJar->cookieStore()->GetCookies(cookieGurl);
     95         cookieString = cookies.c_str();
     96     }
     97     return cookieString;
     98 }
     99 
    100 bool PlatformBridge::cookiesEnabled(const Document* document)
    101 {
    102     bool isPrivateBrowsing = document->settings() && document->settings()->privateBrowsingEnabled();
    103     return WebCookieJar::get(isPrivateBrowsing)->allowCookies();
    104 }
    105 
    106 NPObject* PlatformBridge::pluginScriptableObject(Widget* widget)
    107 {
    108     if (!widget->isPluginView())
    109         return 0;
    110 
    111     PluginView* pluginView = static_cast<PluginView*>(widget);
    112     return pluginView->getNPObject();
    113 }
    114 
    115 bool PlatformBridge::popupsAllowed(NPP)
    116 {
    117     return false;
    118 }
    119 
    120 String PlatformBridge::resolveFilePathForContentUri(const String& contentUri)
    121 {
    122     FileSystemClient* client = JavaSharedClient::GetFileSystemClient();
    123     return client->resolveFilePathForContentUri(contentUri);
    124 }
    125 
    126 int PlatformBridge::PlatformBridge::screenDepth()
    127 {
    128     android::sp<android::IBinder> display(
    129             android::SurfaceComposerClient::getBuiltInDisplay(
    130             android::ISurfaceComposer::eDisplayIdMain));
    131     android::DisplayInfo info;
    132     android::SurfaceComposerClient::getDisplayInfo(display, &info);
    133     return info.pixelFormatInfo.bitsPerPixel;
    134 }
    135 
    136 FloatRect PlatformBridge::screenRect()
    137 {
    138     android::sp<android::IBinder> display(
    139             android::SurfaceComposerClient::getBuiltInDisplay(
    140             android::ISurfaceComposer::eDisplayIdMain));
    141     android::DisplayInfo info;
    142     android::SurfaceComposerClient::getDisplayInfo(display, &info);
    143     return FloatRect(0.0, 0.0, info.w, info.h);
    144 }
    145 
    146 // The visible size on screen in document coordinate
    147 int PlatformBridge::screenWidthInDocCoord(const WebCore::FrameView* frameView)
    148 {
    149     android::WebViewCore* webViewCore = android::WebViewCore::getWebViewCore(frameView);
    150     return webViewCore->screenWidth();
    151 }
    152 
    153 int PlatformBridge::screenHeightInDocCoord(const WebCore::FrameView* frameView)
    154 {
    155     android::WebViewCore* webViewCore = android::WebViewCore::getWebViewCore(frameView);
    156     return webViewCore->screenHeight();
    157 }
    158 
    159 String PlatformBridge::computeDefaultLanguage()
    160 {
    161     String acceptLanguages = WebRequestContext::acceptLanguage();
    162     size_t length = acceptLanguages.find(',');
    163     if (length == std::string::npos)
    164         length = acceptLanguages.length();
    165     return acceptLanguages.substring(0, length);
    166 }
    167 
    168 void PlatformBridge::updateViewport(FrameView* frameView)
    169 {
    170     android::WebViewCore* webViewCore = android::WebViewCore::getWebViewCore(frameView);
    171     webViewCore->updateViewport();
    172 }
    173 
    174 void PlatformBridge::updateTextfield(FrameView* frameView, Node* nodePtr, const WTF::String& text)
    175 {
    176     android::WebViewCore* webViewCore = android::WebViewCore::getWebViewCore(frameView);
    177     webViewCore->updateTextfield(nodePtr, text);
    178 }
    179 
    180 void PlatformBridge::setScrollPosition(ScrollView* scrollView, int x, int y) {
    181     FrameView* frameView = scrollView->frameView();
    182     if (!frameView) return;
    183     // Check to make sure the view is the main FrameView.
    184     android::WebViewCore *webViewCore = android::WebViewCore::getWebViewCore(scrollView);
    185     if (webViewCore->mainFrame()->view() == scrollView) {
    186         x = std::max(0, std::min(frameView->contentsWidth(), x));
    187         y = std::max(0, std::min(frameView->contentsHeight(), y));
    188         webViewCore->scrollTo(x, y);
    189     }
    190 }
    191 
    192 int PlatformBridge::lowMemoryUsageMB()
    193 {
    194     return MemoryUsage::lowMemoryUsageMb();
    195 }
    196 
    197 int PlatformBridge::highMemoryUsageMB()
    198 {
    199     return MemoryUsage::highMemoryUsageMb();
    200 }
    201 
    202 int PlatformBridge::highUsageDeltaMB()
    203 {
    204     return MemoryUsage::highUsageDeltaMb();
    205 }
    206 
    207 int PlatformBridge::memoryUsageMB()
    208 {
    209     return MemoryUsage::memoryUsageMb(false);
    210 }
    211 
    212 int PlatformBridge::actualMemoryUsageMB()
    213 {
    214     return MemoryUsage::memoryUsageMb(true);
    215 }
    216 
    217 bool PlatformBridge::canSatisfyMemoryAllocation(long bytes)
    218 {
    219     JNIEnv* env = JSC::Bindings::getJNIEnv();
    220     jclass bridgeClass = env->FindClass("android/webkit/JniUtil");
    221     jmethodID method = env->GetStaticMethodID(bridgeClass, "canSatisfyMemoryAllocation", "(J)Z");
    222     jboolean canAllocate = env->CallStaticBooleanMethod(bridgeClass, method, static_cast<jlong>(bytes));
    223     env->DeleteLocalRef(bridgeClass);
    224 
    225     return canAllocate == JNI_TRUE;
    226 }
    227 
    228 }  // namespace WebCore
    229 
    230 
    231 // This is the implementation of AndroidThreading, which is declared in
    232 // JavaScriptCore/wtf/android/AndroidThreading.h. It is provided here, rather
    233 // than in its own source file, to avoid linker problems.
    234 //
    235 // By default, when building a shared library, the linker strips from static
    236 // libraries any compilation units which do not contain any code referenced from
    237 // that static library. Since
    238 // AndroidThreading::scheduleDispatchFunctionsOnMainThread is not referenced
    239 // from libwebcore.a, implementing it in its own compilation unit results in it
    240 // being stripped. This stripping can be avoided by using the linker option
    241 // --whole-archive for libwebcore.a, but this adds considerably to the size of
    242 // libwebcore.so.
    243 
    244 namespace WTF {
    245 
    246 // Callback in the main thread.
    247 static void timeoutFired(void*)
    248 {
    249     dispatchFunctionsFromMainThread();
    250 }
    251 
    252 void AndroidThreading::scheduleDispatchFunctionsOnMainThread()
    253 {
    254     JavaSharedClient::EnqueueFunctionPtr(timeoutFired, 0);
    255 }
    256 
    257 }  // namespace WTF
    258