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/***************************************************************************
QtSupport.h - description
-------------------
begin : Fri Oct 20 13:46:55 2000
copyright : (C) 2000 Lost Highway Ltd
email : Richard_Dale@tipitina.demon.co.uk
generated by : duke@tipitina on Fri Oct 20 13:46:55 2000, using kdoc $.
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#ifndef _QT_SUPPORT_H_
#define _QT_SUPPORT_H_
#include <jni.h>
#ifndef JNIEXPORT
#define JNIEXPORT
#endif
#ifndef JNIIMPORT
#define JNIIMPORT
#endif
#ifndef JNICALL
#define JNICALL
#endif
#include <tqstrlist.h>
#include <tqstringlist.h>
#include <tqwidgetlist.h>
#include <tqdom.h>
#include <tqobjectlist.h>
#include <tqdatetime.h>
#include <tqevent.h>
#include <tqvalidator.h>
#include <tqcanvas.h>
#include <tqlistview.h>
#include <tqiconview.h>
#include <tqurlinfo.h>
class JavaSlot;
class JavaSignal;
/** A class with various static utility methods to run the C++ side
of the Qt Java library. The functions cooperate with the Java
methods in 'qtjava.java' and 'Invocation.java'.
@author Richard Dale */
class QtSupport
{
public:
QtSupport() {}
~QtSupport() {}
/** Save the current JavaVM pointer to make it easy to obtain the current environment later */
static void registerJVM(JNIEnv * env);
/** Obtain the current JNIEnv */
static JNIEnv * GetEnv();
/** Converts from the enum TTQEvent::Type to the Java class name of the corresponding event */
static const char * eventTypeToEventClassName(TTQEvent::Type eventType);
/** Event filter handling callback function */
static bool eventFilterDelegate(TTQObject * object, const char * objectType, TTQObject * filterTarget, TTQEvent * event);
/** Event handling callback function */
static bool eventDelegate(TTQObject * object, const char * eventType, void * event, const char * eventName);
/** Void method with no parameters. FALSE if method is implemented in Java,
and returns TRUE if method is not implemented in Java */
static bool voidDelegate(void * object, const char * className, const char * methodName);
/** Boolean method with no parameters. FALSE iff method is implemented in Java
and also returns FALSE. Returns TRUE if method is not implemented in Java */
static bool booleanDelegate(TTQObject * object, const char * methodName);
/** TTQValidator callbacks for validate() and fixup() */
static int validateDelegate(TTQValidator * object, TTQString & input, int & pos);
static void fixupDelegate(TTQValidator * object, TTQString & input);
/** C++ instances are deleted in a finalize method iff 'allocatedInJavaWorld' is true. */
static bool allocatedInJavaWorld(JNIEnv * env, jobject obj);
static void setAllocatedInJavaWorld(JNIEnv * env, jobject obj, bool yn);
/** Obtain the wrapped C++ instance for a given Java instance */
static void * getQt(JNIEnv * env, jobject obj);
/** Set the wrapped C++ instance for a given Java instance */
static void setQt(JNIEnv * env, jobject obj, void * qt);
/** Add a 'C++ instance key/Java instance value' pair to the qtKeyToJavaMap */
static void setObjectForQtKey(JNIEnv * env, jobject obj, void * qt);
/** Obtain the Jave instance for the given C++ instance, instantiating a new
instance of the given class name if needed */
static jobject objectForQtKey(JNIEnv * env, void * qt, const char * className, const bool allocatedInJavaWorld = FALSE);
/** A 'C++ instance has been deleted. Set '_allocatedInJavaWorld' to false in the corresponding java instance */
static void qtKeyDeleted(void * qt);
/** Connect a C++ or Java sender to a Java receiver */
static jboolean connect(JNIEnv * env, jobject sender, jstring signal, jobject receiver, jstring slot);
/** Disconnect a C++ or Java sender from a Java receiver */
static jboolean disconnect(JNIEnv * env, jobject sender, jstring signal, jobject receiver, jstring slot);
/** Invoke a Java slot with arguments 'args'. */
static void emitJavaSignal(JNIEnv * env, jobject sender, jstring signal, jobjectArray args);
/** Return a JavaSignal proxy instance for a Java signal. Creates a new one if needed. */
static JavaSignal * signalForSender(JNIEnv * env, void * qt, jstring signal);
/** Return a JavaSlot proxy instance for a Java slot. Creates a new one if needed. */
static JavaSlot * slotForReceiver(JNIEnv * env, jobject receiver, jstring slot);
/** Casts a 'TTQWidget *', 'TTQPixmap *' or subclass of TTQPaintDevice correctly to a 'TTQPaintDevice *'.
Needed because of C++ multiple inheritance complications. */
static TTQPaintDevice * paintDevice(JNIEnv * env, jobject obj);
/** Casts a 'TTQDragObject *', 'TTQDropEvent *' or subclass of TTQDropEvent correctly to a 'TTQMimeSource *'.
Needed because of C++ multiple inheritance complications. */
static TTQMimeSource * mimeSource(JNIEnv * env, jobject obj);
/** Which byte order are Java strings */
static bool bigEndianUnicode();
/** Convert from Java primitive array types to C++ primitive array */
static bool * toBooleanPtr(JNIEnv * env, jbooleanArray obj);
static int * toIntPtr(JNIEnv * env, jintArray obj);
static double * toDoublePtr(JNIEnv * env, jdoubleArray obj);
static short * toShortPtr(JNIEnv * env, jshortArray obj);
/** Convert from C++ primitive array types to Java primitive arrays */
static jbooleanArray fromBooleanPtr(JNIEnv * env, bool * arg);
static jintArray fromIntPtr(JNIEnv * env, int * arg);
static jdoubleArray fromDoublePtr(JNIEnv * env, double * arg);
static jshortArray fromShortPtr(JNIEnv * env, short * arg);
/** Convert from Qt dates and times to Java Date and Time */
static jobject fromTQDateTime(JNIEnv * env, TTQDateTime* qdate);
static jobject fromTQDate(JNIEnv * env, TTQDate* qdate);
static jobject fromTQTime(JNIEnv * env, TTQTime* qtime);
/** Convert from Java Date and Time to Qt dates and times */
static TTQDateTime * toTQDateTime(JNIEnv * env, jobject jdate, TTQDateTime** qdate);
static TTQDate * toTQDate(JNIEnv * env, jobject jdate, TTQDate** qdate);
static TTQTime * toTQTime(JNIEnv * env, jobject jtime, TTQTime** qtime);
/** Convert from TTQString to Java String */
static jstring fromTQString(JNIEnv * env, TTQString * qstring);
/** Convert from TTQCString to Java String */
static jstring fromTQCString(JNIEnv * env, TTQCString * qcstring);
/** Convert from a char * to Java String */
static jstring fromCharString(JNIEnv * env, char * qcstring);
/** Convert from Java String to TTQString */
static TTQString * toTQString(JNIEnv * env, jstring str, TTQString ** qstring);
/** Convert from Java String to TTQCString */
static TTQCString * toTQCString(JNIEnv * env, jstring str, TTQCString ** qcstring);
/** Convert from Java String to a char * */
static char * toCharString(JNIEnv * env, jstring str, TTQCString ** qcstring);
/** Convert from TTQString to Java StringBuffer */
static void fromTQStringToStringBuffer(JNIEnv * env, TTQString * qstring, jobject buffer);
/** Convert from Java StringBuffer to TTQString */
static TTQString * toTQStringFromStringBuffer(JNIEnv * env, jobject buffer, TTQString ** qstring);
/** Convert from TTQCString to Java StringBuffer */
static void fromTQCStringToStringBuffer(JNIEnv * env, TTQCString * qcstring, jobject buffer);
/** Convert from TTQChar to Java char */
static jchar fromTQChar(JNIEnv * env, TTQChar * qchar);
/** Convert from Java char to TTQChar */
static TTQChar * toTQChar(JNIEnv * env, jchar unichar, TTQChar ** qchar);
/** Convert from TTQByteArray to Java byte array */
static jbyteArray fromTQByteArray(JNIEnv * env, TTQByteArray * qbyteArray);
/** Convert from Java byte array to TTQByteArray */
static TTQByteArray * toTQByteArray(JNIEnv * env, jbyteArray bytes, TTQByteArray ** qbyteArray);
/** Convert from Java 'char[]' to 'uchar *' */
static uchar * toUcharArray(JNIEnv * env, jcharArray bytes, TTQByteArray ** qbyteArray);
/** Convert from Java 'int[]' to TTQValueList<int> */
static TTQValueList<int> toTQIntValueList(JNIEnv * env, jintArray ints, TTQValueList<int> ** qintArray);
/** Convert from TTQValueList<int> to Java 'int[]' */
static jintArray fromTQIntValueList(JNIEnv * env, TTQValueList<int> * qintArray);
/** Convert from a String[] to char * argv[], adding a dummy argv[0] argument */
static char ** toArgv(JNIEnv * env, jobjectArray stringList);
/** Convert from a String[] to char * argv[] */
static char ** toStringArray(JNIEnv * env, jobjectArray stringList);
/** Convert from String[] to TTQStrList */
static TTQStrList * toTQStrList(JNIEnv * env, jobjectArray stringList, TTQStrList ** qstringList);
/** Convert from String[] to TTQStringList */
static TTQStringList * toTQStringList(JNIEnv * env, jobjectArray stringList, TTQStringList ** qstringList);
/** Returns a Java ArrayList for the various types of Qt List */
static jobject arrayWithTQStrList(JNIEnv * env, TTQStrList * strList, jobject arrayList = 0);
static jobject arrayWithTQStringList(JNIEnv * env, TTQStringList * stringList, jobject arrayList = 0);
static jobject arrayWithTQWidgetList(JNIEnv * env, TTQWidgetList * widgetList, jobject arrayList = 0);
static jobject arrayWithTQDomNodeList(JNIEnv * env, TTQDomNodeList * domNodeList, jobject arrayList = 0);
static jobject arrayWithTQObjectList(JNIEnv * env, TTQObjectList * objectList, jobject arrayList = 0);
static jobject arrayWithTQCanvasItemList(JNIEnv * env, TTQCanvasItemList * itemList, jobject arrayList = 0);
static jobject arrayWithTQListViewItemList(JNIEnv * env, TTQListViewItemIterator * iterator, jobject arrayList = 0);
static jobject arrayWithTQRectList(JNIEnv * env, TTQMemArray<TTQRect> * rectList, jobject arrayList = 0);
static jobject arrayWithTQIconDragItemList(JNIEnv * env, TTQValueList<TTQIconDragItem> * dragItemList, jobject arrayList = 0);
static jobject arrayWithTQUrlInfoList(JNIEnv * env, TTQValueList<TTQUrlInfo> * infoList, jobject arrayList = 0);
protected:
/** Cache String constructor from bytes, and getBytes() method info */
static jmethodID MID_String_init;
static jmethodID MID_String_getBytes;
/** Result of the test for the endianess of the unicode string returned by GetStringChars() */
static bool _bigEndianUnicode;
};
#endif
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