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System File Chooser: support "approve" callback and system message dialog on Windows and Linux (not yet used in SystemFileChooser

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This commit is contained in:
Karl Tauber
2025-01-11 17:50:46 +01:00
parent c73fd51704
commit d49282dfe8
12 changed files with 335 additions and 25 deletions
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95
flatlaf-natives/flatlaf-natives-linux/src/main/cpp/GtkFileChooser.cpp
View File

@@ -29,6 +29,9 @@
// declare external methods
extern Window getWindowHandle( JNIEnv* env, JAWT* awt, jobject window, Display** display_return );
// declare internal methods
static jobjectArray fileListToStringArray( JNIEnv* env, GSList* fileList );
//---- class AutoReleaseStringUTF8 --------------------------------------------
class AutoReleaseStringUTF8 {
@@ -142,10 +145,37 @@ static void handle_realize( GtkWidget* dialog, gpointer data ) {
g_object_unref( gdkOwner );
}
struct ResponseData {
JNIEnv* env;
jobject callback;
GSList* fileList;
ResponseData( JNIEnv* _env, jobject _callback ) {
env = _env;
callback = _callback;
fileList = NULL;
}
};
static void handle_response( GtkWidget* dialog, gint responseId, gpointer data ) {
// get filenames if user pressed OK
if( responseId == GTK_RESPONSE_ACCEPT )
*((GSList**)data) = gtk_file_chooser_get_filenames( GTK_FILE_CHOOSER( dialog ) );
if( responseId == GTK_RESPONSE_ACCEPT ) {
ResponseData *response = static_cast<ResponseData*>( data );
if( response->callback != NULL ) {
GSList* fileList = gtk_file_chooser_get_filenames( GTK_FILE_CHOOSER( dialog ) );
jobjectArray files = fileListToStringArray( response->env, fileList );
GtkWindow* window = GTK_WINDOW( dialog );
// invoke callback: boolean approve( String[] files, long hwnd );
jclass cls = response->env->GetObjectClass( response->callback );
jmethodID approveID = response->env->GetMethodID( cls, "approve", "([Ljava/lang/String;J)Z" );
if( approveID != NULL && !response->env->CallBooleanMethod( response->callback, approveID, files, window ) )
return; // keep dialog open
}
response->fileList = gtk_file_chooser_get_filenames( GTK_FILE_CHOOSER( dialog ) );
}
// hide/destroy file dialog and quit loop
gtk_widget_hide( dialog );
@@ -159,7 +189,7 @@ extern "C"
JNIEXPORT jobjectArray JNICALL Java_com_formdev_flatlaf_ui_FlatNativeLinuxLibrary_showFileChooser
( JNIEnv* env, jclass cls, jobject owner, jboolean open,
jstring title, jstring okButtonLabel, jstring currentName, jstring currentFolder,
jint optionsSet, jint optionsClear, jint fileTypeIndex, jobjectArray fileTypes )
jint optionsSet, jint optionsClear, jobject callback, jint fileTypeIndex, jobjectArray fileTypes )
{
// initialize GTK
if( !gtk_init_check( NULL, NULL ) )
@@ -222,8 +252,8 @@ JNIEXPORT jobjectArray JNICALL Java_com_formdev_flatlaf_ui_FlatNativeLinuxLibrar
// show dialog
// (similar to what's done in sun_awt_X11_GtkFileDialogPeer.c)
GSList* fileList = NULL;
g_signal_connect( dialog, "response", G_CALLBACK( handle_response ), &fileList );
ResponseData responseData( env, callback );
g_signal_connect( dialog, "response", G_CALLBACK( handle_response ), &responseData );
gtk_widget_show( dialog );
// necessary to bring file dialog to the front (and make it active)
@@ -241,10 +271,14 @@ JNIEXPORT jobjectArray JNICALL Java_com_formdev_flatlaf_ui_FlatNativeLinuxLibrar
gtk_main();
// canceled?
if( fileList == NULL )
if( responseData.fileList == NULL )
return newJavaStringArray( env, 0 );
// convert GSList to Java string array
return fileListToStringArray( env, responseData.fileList );
}
static jobjectArray fileListToStringArray( JNIEnv* env, GSList* fileList ) {
guint count = g_slist_length( fileList );
jobjectArray array = newJavaStringArray( env, count );
GSList* it = fileList;
@@ -259,3 +293,52 @@ JNIEXPORT jobjectArray JNICALL Java_com_formdev_flatlaf_ui_FlatNativeLinuxLibrar
g_slist_free( fileList );
return array;
}
extern "C"
JNIEXPORT jint JNICALL Java_com_formdev_flatlaf_ui_FlatNativeLinuxLibrary_showMessageDialog
( JNIEnv* env, jclass cls, jlong hwndParent, jint messageType, jstring primaryText, jstring secondaryText,
jint defaultButton, jobjectArray buttons )
{
GtkWindow* window = (GtkWindow*) hwndParent;
// convert message type
GtkMessageType gmessageType;
switch( messageType ) {
case /* JOptionPane.ERROR_MESSAGE */ 0: gmessageType = GTK_MESSAGE_ERROR; break;
case /* JOptionPane.INFORMATION_MESSAGE */ 1: gmessageType = GTK_MESSAGE_INFO; break;
case /* JOptionPane.WARNING_MESSAGE */ 2: gmessageType = GTK_MESSAGE_WARNING; break;
case /* JOptionPane.QUESTION_MESSAGE */ 3: gmessageType = GTK_MESSAGE_QUESTION; break;
default:
case /* JOptionPane.PLAIN_MESSAGE */ -1: gmessageType = GTK_MESSAGE_OTHER; break;
}
// convert Java strings to C strings
AutoReleaseStringUTF8 cprimaryText( env, primaryText );
AutoReleaseStringUTF8 csecondaryText( env, secondaryText );
// create GTK file chooser dialog
// https://docs.gtk.org/gtk3/class.MessageDialog.html
jint buttonCount = env->GetArrayLength( buttons );
GtkWidget* dialog = gtk_message_dialog_new( window, GTK_DIALOG_MODAL, gmessageType,
(buttonCount > 0) ? GTK_BUTTONS_NONE : GTK_BUTTONS_OK,
"%s", (const gchar*) cprimaryText );
if( csecondaryText != NULL )
gtk_message_dialog_format_secondary_text( GTK_MESSAGE_DIALOG( dialog ), "%s", (const gchar*) csecondaryText );
// add buttons
for( int i = 0; i < buttonCount; i++ ) {
AutoReleaseStringUTF8 str( env, (jstring) env->GetObjectArrayElement( buttons, i ) );
gtk_dialog_add_button( GTK_DIALOG( dialog ), str, i );
}
// set default button
gtk_dialog_set_default_response( GTK_DIALOG( dialog ), MIN( MAX( defaultButton, 0 ), buttonCount - 1 ) );
// show message dialog
gint responseID = gtk_dialog_run( GTK_DIALOG( dialog ) );
gtk_widget_destroy( dialog );
// return -1 if closed with ESC key
return (responseID >= 0) ? responseID : -1;
}

12
flatlaf-natives/flatlaf-natives-linux/src/main/headers/com_formdev_flatlaf_ui_FlatNativeLinuxLibrary.h
View File

@@ -40,10 +40,18 @@ JNIEXPORT jboolean JNICALL Java_com_formdev_flatlaf_ui_FlatNativeLinuxLibrary_xS
/*
* Class: com_formdev_flatlaf_ui_FlatNativeLinuxLibrary
* Method: showFileChooser
* Signature: (Ljava/awt/Window;ZLjava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;III[Ljava/lang/String;)[Ljava/lang/String;
* Signature: (Ljava/awt/Window;ZLjava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;IILcom/formdev/flatlaf/ui/FlatNativeLinuxLibrary/FileChooserCallback;I[Ljava/lang/String;)[Ljava/lang/String;
*/
JNIEXPORT jobjectArray JNICALL Java_com_formdev_flatlaf_ui_FlatNativeLinuxLibrary_showFileChooser
(JNIEnv *, jclass, jobject, jboolean, jstring, jstring, jstring, jstring, jint, jint, jint, jobjectArray);
(JNIEnv *, jclass, jobject, jboolean, jstring, jstring, jstring, jstring, jint, jint, jobject, jint, jobjectArray);
/*
* Class: com_formdev_flatlaf_ui_FlatNativeLinuxLibrary
* Method: showMessageDialog
* Signature: (JILjava/lang/String;Ljava/lang/String;I[Ljava/lang/String;)I
*/
JNIEXPORT jint JNICALL Java_com_formdev_flatlaf_ui_FlatNativeLinuxLibrary_showMessageDialog
(JNIEnv *, jclass, jlong, jint, jstring, jstring, jint, jobjectArray);
#ifdef __cplusplus
}