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
38 namespace android {
39
getRealObject(JNIEnv * env,jobject obj)40 AutoJObject 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 */
checkException(JNIEnv * env)51 bool 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.
jstringToWtfString(JNIEnv * env,jstring str)63 WTF::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
wtfStringToJstring(JNIEnv * env,const WTF::String & str,bool validOnZeroLength)76 jstring 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
jstringToString16(JNIEnv * env,jstring jstr)82 string16 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
jstringToStdString(JNIEnv * env,jstring jstr)96 std::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
stdStringToJstring(JNIEnv * env,const std::string & str,bool validOnZeroLength)110 jstring stdStringToJstring(JNIEnv* env, const std::string& str, bool validOnZeroLength)
111 {
112 return !str.empty() || validOnZeroLength ? env->NewStringUTF(str.c_str()) : 0;
113 }
114
intRectToRect(JNIEnv * env,const WebCore::IntRect & rect)115 jobject 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
intRectVectorToRectArray(JNIEnv * env,Vector<WebCore::IntRect> & rects)127 jobjectArray 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