1/* 2 * Copyright 2007, 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#define LOG_TAG "webcoreglue" 27 28#include "config.h" 29#include "IntRect.h" 30#include "WebCoreJni.h" 31#include "wtf/Vector.h" 32 33#include "NotImplemented.h" 34#include <JNIUtility.h> 35#include <jni.h> 36#include <utils/Log.h> 37 38namespace android { 39 40AutoJObject getRealObject(JNIEnv* env, jobject obj) 41{ 42 jobject real = env->NewLocalRef(obj); 43 ALOG_ASSERT(real, "The real object has been deleted!"); 44 return AutoJObject(env, real); 45} 46 47/** 48 * Helper method for checking java exceptions 49 * @return true if an exception occurred. 50 */ 51bool checkException(JNIEnv* env) 52{ 53 if (env->ExceptionCheck() != 0) 54 { 55 ALOGE("*** Uncaught exception returned from Java call!\n"); 56 env->ExceptionDescribe(); 57 return true; 58 } 59 return false; 60} 61 62// This method is safe to call from the ui thread and the WebCore thread. 63WTF::String jstringToWtfString(JNIEnv* env, jstring str) 64{ 65 if (!str || !env) 66 return WTF::String(); 67 const jchar* s = env->GetStringChars(str, NULL); 68 if (!s) 69 return WTF::String(); 70 WTF::String ret(s, env->GetStringLength(str)); 71 env->ReleaseStringChars(str, s); 72 checkException(env); 73 return ret; 74} 75 76jstring wtfStringToJstring(JNIEnv* env, const WTF::String& str, bool validOnZeroLength) 77{ 78 int length = str.length(); 79 return length || validOnZeroLength ? env->NewString(str.characters(), length) : 0; 80} 81 82string16 jstringToString16(JNIEnv* env, jstring jstr) 83{ 84 if (!jstr || !env) 85 return string16(); 86 87 const char* s = env->GetStringUTFChars(jstr, 0); 88 if (!s) 89 return string16(); 90 string16 str = UTF8ToUTF16(s); 91 env->ReleaseStringUTFChars(jstr, s); 92 checkException(env); 93 return str; 94} 95 96std::string jstringToStdString(JNIEnv* env, jstring jstr) 97{ 98 if (!jstr || !env) 99 return std::string(); 100 101 const char* s = env->GetStringUTFChars(jstr, 0); 102 if (!s) 103 return std::string(); 104 std::string str(s); 105 env->ReleaseStringUTFChars(jstr, s); 106 checkException(env); 107 return str; 108} 109 110jstring stdStringToJstring(JNIEnv* env, const std::string& str, bool validOnZeroLength) 111{ 112 return !str.empty() || validOnZeroLength ? env->NewStringUTF(str.c_str()) : 0; 113} 114 115jobject intRectToRect(JNIEnv* env, const WebCore::IntRect& rect) 116{ 117 jclass rectClass = env->FindClass("android/graphics/Rect"); 118 ALOG_ASSERT(rectClass, "Could not find android/graphics/Rect"); 119 jmethodID rectInit = env->GetMethodID(rectClass, "<init>", "(IIII)V"); 120 ALOG_ASSERT(rectInit, "Could not find init method on Rect"); 121 jobject jrect = env->NewObject(rectClass, rectInit, rect.x(), rect.y(), 122 rect.maxX(), rect.maxY()); 123 env->DeleteLocalRef(rectClass); 124 return jrect; 125} 126 127jobjectArray intRectVectorToRectArray(JNIEnv* env, Vector<WebCore::IntRect>& rects) 128{ 129 jclass rectClass = env->FindClass("android/graphics/Rect"); 130 ALOG_ASSERT(rectClass, "Could not find android/graphics/Rect"); 131 jmethodID rectInit = env->GetMethodID(rectClass, "<init>", "(IIII)V"); 132 ALOG_ASSERT(rectInit, "Could not find init method on Rect"); 133 jobjectArray array = env->NewObjectArray(rects.size(), rectClass, 0); 134 ALOG_ASSERT(array, "Could not create a Rect array"); 135 for (size_t i = 0; i < rects.size(); i++) { 136 jobject rect = env->NewObject(rectClass, rectInit, 137 rects[i].x(), rects[i].y(), 138 rects[i].maxX(), rects[i].maxY()); 139 if (rect) { 140 env->SetObjectArrayElement(array, i, rect); 141 env->DeleteLocalRef(rect); 142 } 143 } 144 env->DeleteLocalRef(rectClass); 145 return array; 146} 147 148} 149