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/*
* Copyright 2009, 2010, The Android Open Source Project
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef PlatformBridge_h
#define PlatformBridge_h
#include "KURL.h"
#include "npapi.h"
#include "PlatformString.h"
#include <wtf/Vector.h>
// V8 bindings use the ARRAYSIZE_UNSAFE macro. This macro was copied
// from http://src.chromium.org/viewvc/chrome/trunk/src/base/basictypes.h
//
// ARRAYSIZE_UNSAFE performs essentially the same calculation as arraysize,
// but can be used on anonymous types or types defined inside
// functions. It's less safe than arraysize as it accepts some
// (although not all) pointers. Therefore, you should use arraysize
// whenever possible.
//
// The expression ARRAYSIZE_UNSAFE(a) is a compile-time constant of type
// size_t.
//
// ARRAYSIZE_UNSAFE catches a few type errors. If you see a compiler error
//
// "warning: division by zero in ..."
//
// when using ARRAYSIZE_UNSAFE, you are (wrongfully) giving it a pointer.
// You should only use ARRAYSIZE_UNSAFE on statically allocated arrays.
//
// The following comments are on the implementation details, and can
// be ignored by the users.
//
// ARRAYSIZE_UNSAFE(arr) works by inspecting sizeof(arr) (the # of bytes in
// the array) and sizeof(*(arr)) (the # of bytes in one array
// element). If the former is divisible by the latter, perhaps arr is
// indeed an array, in which case the division result is the # of
// elements in the array. Otherwise, arr cannot possibly be an array,
// and we generate a compiler error to prevent the code from
// compiling.
//
// Since the size of bool is implementation-defined, we need to cast
// !(sizeof(a) & sizeof(*(a))) to size_t in order to ensure the final
// result has type size_t.
//
// This macro is not perfect as it wrongfully accepts certain
// pointers, namely where the pointer size is divisible by the pointee
// size. Since all our code has to go through a 32-bit compiler,
// where a pointer is 4 bytes, this means all pointers to a type whose
// size is 3 or greater than 4 will be (righteously) rejected.
#define ARRAYSIZE_UNSAFE(a) \
((sizeof(a) / sizeof(*(a))) / \
static_cast<size_t>(!(sizeof(a) % sizeof(*(a)))))
class NPObject;
namespace WebCore {
#if USE(ACCELERATED_COMPOSITING)
class LayerAndroid;
#endif
class FrameView;
class Widget;
// An interface to the embedding layer, which has the ability to answer
// questions about the system and so on...
// This is very similar to ChromiumBridge and the two are likely to converge
// in the future.
//
// The methods in this class all need to reach across a JNI layer to the Java VM
// where the embedder runs. The JNI machinery is currently all in WebKit/android
// but the long term plan is to move to the WebKit API and share the bridge and its
// implementation with Chromium. The JNI machinery will then move outside of WebKit,
// similarly to how Chromium's IPC layer lives outside of WebKit.
class PlatformBridge {
public:
// KeyGenerator
static WTF::Vector<String> getSupportedKeyStrengthList();
static String getSignedPublicKeyAndChallengeString(unsigned index, const String& challenge, const KURL&);
// Cookies
static void setCookies(const KURL&, const String& value);
static String cookies(const KURL&);
static bool cookiesEnabled();
// Plugin
static NPObject* pluginScriptableObject(Widget*);
// Popups
static bool popupsAllowed(NPP);
// These ids need to be in sync with the constants in BrowserFrame.java
enum rawResId {
NoDomain = 1,
LoadError,
DrawableDir,
FileUploadLabel,
ResetLabel,
SubmitLabel
};
static String* globalLocalizedName(rawResId resId);
#if USE(ACCELERATED_COMPOSITING)
// Those methods are used by the layers system
static void setUIRootLayer(const FrameView* view, const LayerAndroid* layer);
static void immediateRepaint(const FrameView* view);
#endif // USE(ACCELERATED_COMPOSITING)
static int screenWidth(const FrameView* view);
static int screenHeight(const FrameView* view);
// Whether the WebView is paused.
// ANDROID
// TODO: Upstream to webkit.org. See https://bugs.webkit.org/show_bug.cgi?id=34082
static bool isWebViewPaused(const FrameView*);
};
}
#endif // PlatformBridge_h
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