macosx: Lua extensions infrastructure

Add files for extension creation management, add them to the build process, and
add them to the XCode project.
Signed-off-by: Felix Paul Kühne <fkuehne@videolan.org>
(cherry picked from commit efa2f96d313baacbc013bb554a444c00d5ba82a6)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

extras/package/macosx/vlc.xcodeproj/project.pbxproj

@@ -286,6 +286,12 @@
 		1058C7ADFEA557BF11CA2CBB /* Cocoa.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Cocoa.framework; path = /System/Library/Frameworks/Cocoa.framework; sourceTree = "<absolute>"; };
 		2AEF857609A5FEC900130822 /* fspanel.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = fspanel.h; path = ../../../modules/gui/macosx/fspanel.h; sourceTree = SOURCE_ROOT; };
 		2AEF857709A5FEC900130822 /* fspanel.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = fspanel.m; path = ../../../modules/gui/macosx/fspanel.m; sourceTree = SOURCE_ROOT; };
+		5CCED71014C0D4A90057F8D1 /* ExtensionsDialogProvider.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = ExtensionsDialogProvider.h; path = ../../../modules/gui/macosx/ExtensionsDialogProvider.h; sourceTree = SOURCE_ROOT; };
+		5CCED71114C0D4A90057F8D1 /* ExtensionsDialogProvider.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = ExtensionsDialogProvider.m; path = ../../../modules/gui/macosx/ExtensionsDialogProvider.m; sourceTree = SOURCE_ROOT; };
+		5CCED71214C0D4A90057F8D1 /* ExtensionsManager.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = ExtensionsManager.h; path = ../../../modules/gui/macosx/ExtensionsManager.h; sourceTree = SOURCE_ROOT; };
+		5CCED71314C0D4A90057F8D1 /* ExtensionsManager.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = ExtensionsManager.m; path = ../../../modules/gui/macosx/ExtensionsManager.m; sourceTree = SOURCE_ROOT; };
+		5CCED71414C0D4A90057F8D1 /* VLCUIWidgets.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = VLCUIWidgets.h; path = ../../../modules/gui/macosx/VLCUIWidgets.h; sourceTree = SOURCE_ROOT; };
+		5CCED71514C0D4A90057F8D1 /* VLCUIWidgets.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = VLCUIWidgets.m; path = ../../../modules/gui/macosx/VLCUIWidgets.m; sourceTree = SOURCE_ROOT; };
 		8E49720006417F6800370C9F /* playlistinfo.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = playlistinfo.h; path = ../../../modules/gui/macosx/playlistinfo.h; sourceTree = SOURCE_ROOT; };
 		8E49720106417F6800370C9F /* playlistinfo.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = playlistinfo.m; path = ../../../modules/gui/macosx/playlistinfo.m; sourceTree = SOURCE_ROOT; };
 		8E55FB7F0459B0FD00FB3317 /* output.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = output.h; path = ../../../modules/gui/macosx/output.h; sourceTree = SOURCE_ROOT; };
@@ -706,6 +712,12 @@
 				CC448A6313B68A0B009F72E0 /* MainWindow.m */,
 				CC4A33220F8CB017000FC4A7 /* coredialogs.h */,
 				CC4A33210F8CB017000FC4A7 /* coredialogs.m */,
+				5CCED71014C0D4A90057F8D1 /* ExtensionsDialogProvider.h */,
+				5CCED71114C0D4A90057F8D1 /* ExtensionsDialogProvider.m */,
+				5CCED71214C0D4A90057F8D1 /* ExtensionsManager.h */,
+				5CCED71314C0D4A90057F8D1 /* ExtensionsManager.m */,
+				5CCED71414C0D4A90057F8D1 /* VLCUIWidgets.h */,
+				5CCED71514C0D4A90057F8D1 /* VLCUIWidgets.m */,
 				8E6BC6FA041684EC0059A3A7 /* controls.h */,
 				8ED6C27B03E2EB1C0059A3A7 /* controls.m */,
 				8E6BC6F6041643860059A3A7 /* applescript.h */,

modules/gui/macosx/ExtensionsDialogProvider.h

+/*****************************************************************************
+ * ExtensionsDialogProvider.h: Mac OS X Extensions Dialogs
+ *****************************************************************************
+ * Copyright (C) 2005-2012 VLC authors and VideoLAN
+ * $Id$
+ *
+ * Authors: Brendon Justin <brendonjustin at gmail.com>,
+ *          Derk-Jan Hartman <hartman at videolan dot org>,
+ *          Felix Paul Kühne <fkuehne at videolan dot org>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+#import "coredialogs.h"
+#import "intf.h"
+#import "VLCUIWidgets.h"
+
+#import <vlc_common.h>
+#import <vlc_dialog.h>
+#import <vlc_extensions.h>
+
+#import <Cocoa/Cocoa.h>
+
+/*****************************************************************************
+ * ExtensionsDialogProvider interface
+ *****************************************************************************/
+ at interface ExtensionsDialogProvider : NSObject <NSWindowDelegate>
+{
+    intf_thread_t *p_intf;
+}
+
++ (ExtensionsDialogProvider *)sharedInstance:(intf_thread_t *)_p_intf;
++ (void)killInstance;
+
+- (id)initWithIntf:(intf_thread_t *)_p_intf;
+
+- (void)performEventWithObject: (NSValue *)o_value ofType:(const char*)type;
+
+- (void)triggerClick:(id)sender;
+- (void)syncTextField:(NSNotification *)notifcation;
+- (void)tableViewSelectionDidChange:(NSNotification *)notifcation;
+- (void)popUpSelectionChanged:(id)sender;
+- (NSSize)windowWillResize:(NSWindow *)sender toSize:(NSSize)frameSize;
+- (BOOL)windowShouldClose:(id)sender;
+- (void)updateWidgets:(extension_dialog_t *)dialog;
+
+- (VLCDialogWindow *)createExtensionDialog:(extension_dialog_t *)p_dialog;
+- (int)destroyExtensionDialog:(extension_dialog_t *)o_value;
+- (VLCDialogWindow *)updateExtensionDialog:(NSValue *)o_value;
+- (void)manageDialog:(extension_dialog_t *)p_dialog;
+
+ at end

modules/gui/macosx/ExtensionsDialogProvider.m

+/*****************************************************************************
+ * ExtensionsDialogProvider.m: Mac OS X Extensions Dialogs
+ *****************************************************************************
+ * Copyright (C) 2005-2012 VLC authors and VideoLAN
+ * $Id$
+ *
+ * Authors: Brendon Justin <brendonjustin at gmail.com>,
+ *          Derk-Jan Hartman <hartman at videolan dot org>,
+ *          Felix Paul Kühne <fkuehne at videolan dot org>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+#import "ExtensionsDialogProvider.h"
+
+#import "intf.h"
+#import "ExtensionsManager.h"
+#import "misc.h"
+#import "VLCUIWidgets.h"
+
+#import <WebKit/WebKit.h>
+#import <stdlib.h>
+
+/*****************************************************************************
+ * VLCExtensionsDialogProvider implementation
+ *****************************************************************************/
+
+static int dialogCallback( vlc_object_t *p_this, const char *psz_variable,
+                           vlc_value_t old_val, vlc_value_t new_val,
+                           void *param );
+
+static NSView *createControlFromWidget(extension_widget_t *widget, id self)
+{
+    assert(!widget->p_sys_intf);
+    switch (widget->type)
+    {
+        case EXTENSION_WIDGET_HTML:
+        {
+            WebView *webView = [[WebView alloc] initWithFrame:NSMakeRect (0,0,1,1)];
+            [webView setAutoresizingMask:NSViewHeightSizable | NSViewWidthSizable];
+            [webView setDrawsBackground:NO];
+            return webView;
+        }
+        case EXTENSION_WIDGET_LABEL:
+        {
+            NSTextField *field = [[NSTextField alloc] init];
+            [field setEditable:NO];
+            [field setBordered:NO];
+            [field setDrawsBackground:NO];
+            [field setFont:[NSFont systemFontOfSize:0]];
+            [[field cell] setControlSize:NSRegularControlSize];
+            [field setAutoresizingMask:NSViewNotSizable];
+            return field;
+        }
+        case EXTENSION_WIDGET_TEXT_FIELD:
+        {
+            VLCDialogTextField *field = [[VLCDialogTextField alloc] init];
+            [field setWidget:widget];
+            [field setAutoresizingMask:NSViewWidthSizable];
+            [field setFont:[NSFont systemFontOfSize:0]];
+            [[field cell] setControlSize:NSRegularControlSize];
+            [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(syncTextField:)  name:NSControlTextDidChangeNotification object:field];
+            return field;
+        }
+        case EXTENSION_WIDGET_BUTTON:
+        {
+            VLCDialogButton *button = [[VLCDialogButton alloc] init];
+            [button setBezelStyle:NSRoundedBezelStyle];
+            [button setWidget:widget];
+            [button setAction:@selector(triggerClick:)];
+            [button setTarget:self];
+            [[button cell] setControlSize:NSRegularControlSize];
+            [button setAutoresizingMask:NSViewNotSizable];
+            return button;
+        }
+        case EXTENSION_WIDGET_DROPDOWN:
+        {
+            VLCDialogPopUpButton *popup = [[VLCDialogPopUpButton alloc] init];
+            [popup setAction:@selector(popUpSelectionChanged:)];
+            [popup setTarget:self];
+            [popup setWidget:widget];
+            return popup;
+        }
+        case EXTENSION_WIDGET_LIST:
+        {
+            NSScrollView *scrollView = [[NSScrollView alloc] init];
+            [scrollView setHasVerticalScroller:YES];
+            VLCDialogList *list = [[VLCDialogList alloc] init];
+            [list setUsesAlternatingRowBackgroundColors:YES];
+            [list setHeaderView:nil];
+            [scrollView setDocumentView:list];
+            [scrollView setAutoresizingMask:NSViewHeightSizable | NSViewWidthSizable];
+
+            NSTableColumn *column = [[NSTableColumn alloc] init];
+            [list addTableColumn:column];
+            [column release];
+            [list setDataSource:list];
+            [list setDelegate:self];
+            [list setWidget:widget];
+            [list release];
+            return scrollView;
+        }
+        case EXTENSION_WIDGET_IMAGE:
+        {
+            NSImageView *imageView = [[NSImageView alloc] init];
+            [imageView setAutoresizingMask:NSViewHeightSizable | NSViewWidthSizable];
+            [imageView setImageFrameStyle:NSImageFramePhoto];
+            [imageView setImageScaling:NSImageScaleProportionallyUpOrDown];
+            return imageView;
+        }
+        case EXTENSION_WIDGET_SPIN_ICON:
+        {
+            NSProgressIndicator *spinner = [[NSProgressIndicator alloc] init];
+            [spinner setUsesThreadedAnimation:YES];
+            [spinner setStyle:NSProgressIndicatorSpinningStyle];
+            [spinner setDisplayedWhenStopped:YES];
+            [spinner startAnimation:self];
+            return spinner;
+        }
+        default:
+            return nil;
+    }
+
+}
+
+static void updateControlFromWidget(NSView *control, extension_widget_t *widget, id self)
+{
+    switch (widget->type)
+    {
+        case EXTENSION_WIDGET_HTML:
+        {
+            // Get the web view
+            assert([control isKindOfClass:[WebView class]]);
+            WebView *webView = (WebView *)control;
+            NSString *string = [NSString stringWithUTF8String:widget->psz_text];
+            [[webView mainFrame] loadHTMLString:string baseURL:[NSURL URLWithString:@""]];
+            [webView setNeedsDisplay:YES];
+            break;
+
+        }
+        {
+            assert([control isKindOfClass:[NSTextView class]]);
+            NSTextView *textView = (NSTextView *)control;
+            NSString *string = [NSString stringWithUTF8String:widget->psz_text];
+            NSAttributedString *attrString = [[NSAttributedString alloc] initWithHTML:[string dataUsingEncoding:NSUTF8StringEncoding] documentAttributes:NULL];
+            [[textView textStorage] setAttributedString:attrString];
+            [textView setNeedsDisplay:YES];
+            [textView scrollRangeToVisible:NSMakeRange(0, 0)];
+            [attrString release];
+            break;
+
+        }
+        case EXTENSION_WIDGET_LABEL:
+        case EXTENSION_WIDGET_PASSWORD:
+        case EXTENSION_WIDGET_TEXT_FIELD:
+        {
+            if (!widget->psz_text)
+                break;
+            assert([control isKindOfClass:[NSControl class]]);
+            NSControl *field = (NSControl *)control;
+            NSString *string = [NSString stringWithUTF8String:widget->psz_text];
+            NSAttributedString *attrString = [[NSAttributedString alloc] initWithHTML:[string dataUsingEncoding:NSUTF8StringEncoding] documentAttributes:NULL];
+            [field setAttributedStringValue:attrString];
+            [attrString release];
+            break;
+        }
+        case EXTENSION_WIDGET_CHECK_BOX:
+        case EXTENSION_WIDGET_BUTTON:
+        {
+            assert([control isKindOfClass:[NSButton class]]);
+            NSButton *button = (NSButton *)control;
+            if (!widget->psz_text)
+                break;
+            [button setTitle:[NSString stringWithUTF8String:widget->psz_text]];
+            break;
+        }
+        case EXTENSION_WIDGET_DROPDOWN:
+        {
+            assert([control isKindOfClass:[NSPopUpButton class]]);
+            NSPopUpButton *popup = (NSPopUpButton *)control;
+            [popup removeAllItems];
+            struct extension_widget_value_t *value;
+            for(value = widget->p_values; value != NULL; value = value->p_next)
+            {
+                [popup addItemWithTitle:[NSString stringWithUTF8String:value->psz_text]];
+            }
+            [popup synchronizeTitleAndSelectedItem];
+            [self popUpSelectionChanged:popup];
+            break;
+        }
+
+        case EXTENSION_WIDGET_LIST:
+        {
+            assert([control isKindOfClass:[NSScrollView class]]);
+            NSScrollView *scrollView = (NSScrollView *)control;
+            assert([[scrollView documentView] isKindOfClass:[VLCDialogList class]]);
+            VLCDialogList *list = (VLCDialogList *)[scrollView documentView];
+
+            NSMutableArray *contentArray = [NSMutableArray array];
+            struct extension_widget_value_t *value;
+            for(value = widget->p_values; value != NULL; value = value->p_next)
+            {
+                NSDictionary *entry = [NSDictionary dictionaryWithObjectsAndKeys:
+                                       [NSNumber numberWithInt:value->i_id], @"id",
+                                       [NSString stringWithUTF8String:value->psz_text], @"text",
+                                       nil];
+                [contentArray addObject:entry];
+            }
+            list.contentArray = contentArray;
+            [list reloadData];
+            break;
+        }
+        case EXTENSION_WIDGET_IMAGE:
+        {
+            assert([control isKindOfClass:[NSImageView class]]);
+            NSImageView *imageView = (NSImageView *)control;
+            NSString *string = widget->psz_text ? [NSString stringWithUTF8String:widget->psz_text] : nil;
+            NSImage *image = nil;
+            if (string)
+                image = [[NSImage alloc] initWithContentsOfURL:[NSURL fileURLWithPath:string]];
+            [imageView setImage:image];
+            [image release];
+            break;
+        }
+        case EXTENSION_WIDGET_SPIN_ICON:
+        {
+            assert([control isKindOfClass:[NSProgressIndicator class]]);
+            NSProgressIndicator *progressIndicator = (NSProgressIndicator *)control;
+            if( widget->i_spin_loops != 0 )
+                [progressIndicator startAnimation:self];
+            else
+                [progressIndicator stopAnimation:self];
+            break;
+        }
+    }
+
+}
+
+/**
+ * Ask the dialogs provider to create a new dialog
+ **/
+static int dialogCallback( vlc_object_t *p_this, const char *psz_variable,
+                           vlc_value_t old_val, vlc_value_t new_val,
+                           void *param )
+{
+    (void) p_this;
+    (void) psz_variable;
+    (void) old_val;
+    (void) param;
+
+    ExtensionsDialogProvider *p_edp = [ExtensionsDialogProvider sharedInstance:(intf_thread_t *)p_this];
+    if( !p_edp )
+        return VLC_EGENERIC;
+    if( !new_val.p_address )
+        return VLC_EGENERIC;
+
+    extension_dialog_t *p_dialog = ( extension_dialog_t* ) new_val.p_address;
+    [p_edp manageDialog:p_dialog];
+    return VLC_SUCCESS;
+}
+
+ at implementation ExtensionsDialogProvider
+
+static ExtensionsDialogProvider *_o_sharedInstance = nil;
+
++ (ExtensionsDialogProvider *)sharedInstance:(intf_thread_t *)_p_intf
+{
+    return _o_sharedInstance ? _o_sharedInstance : [[self alloc] initWithIntf:_p_intf];
+}
+
++ (void)killInstance
+{
+    if (_o_sharedInstance)
+    {
+        [_o_sharedInstance release];
+    }
+}
+
+- (id)initWithIntf:(intf_thread_t *)_p_intf
+{
+    if( _o_sharedInstance )
+        [self dealloc];
+
+    if ((self = [super init]))
+    {
+        _o_sharedInstance = self;
+        p_intf = _p_intf;
+
+        // The Cocoa interface already called dialog_Register()
+        var_Create( p_intf, "dialog-extension", VLC_VAR_ADDRESS );
+        var_AddCallback( p_intf, "dialog-extension", dialogCallback, NULL );
+    }
+
+    return _o_sharedInstance;
+}
+
+- (void)dealloc
+{
+    msg_Dbg( p_intf, "ExtensionsDialogProvider is quitting..." );
+    var_DelCallback( p_intf, "dialog-extension", dialogCallback, NULL );
+
+    [super dealloc];
+}
+
+- (void)performEventWithObject: (NSValue *)o_value ofType: (const char*)type
+{
+    NSString *o_type = [NSString stringWithUTF8String:type];
+
+    if( [o_type isEqualToString: @"dialog-extension"] )
+    {
+        [self performSelectorOnMainThread:@selector(updateExtensionDialog:)
+                               withObject:o_value
+                            waitUntilDone:YES];
+
+    }
+    else
+        msg_Err( VLCIntf, "unhandled dialog type: '%s'", type );
+}
+
+- (void)triggerClick:(id)sender
+{
+    assert([sender isKindOfClass:[VLCDialogButton class]]);
+    VLCDialogButton *button = sender;
+    extension_widget_t *widget = [button widget];
+
+    vlc_mutex_lock(&widget->p_dialog->lock);
+    extension_WidgetClicked(widget->p_dialog, widget);
+    vlc_mutex_unlock(&widget->p_dialog->lock);
+}
+
+- (void)syncTextField:(NSNotification *)notifcation
+{
+    id sender = [notifcation object];
+    assert([sender isKindOfClass:[VLCDialogTextField class]]);
+    VLCDialogTextField *field = sender;
+    extension_widget_t *widget = [field widget];
+
+    vlc_mutex_lock(&widget->p_dialog->lock);
+    free(widget->psz_text);
+    widget->psz_text = strdup([[field stringValue] UTF8String]);
+    vlc_mutex_unlock(&widget->p_dialog->lock);
+}
+
+- (void)tableViewSelectionDidChange:(NSNotification *)notifcation
+{
+    id sender = [notifcation object];
+    assert(sender && [sender isKindOfClass:[VLCDialogList class]]);
+    VLCDialogList *list = sender;
+
+    struct extension_widget_value_t *value;
+    unsigned i = 0;
+    for(value = [list widget]->p_values; value != NULL; value = value->p_next, i++)
+        value->b_selected = (i == [list selectedRow]);
+}
+
+- (void)popUpSelectionChanged:(id)sender
+{
+    assert([sender isKindOfClass:[VLCDialogPopUpButton class]]);
+    VLCDialogPopUpButton *popup = sender;
+    struct extension_widget_value_t *value;
+    unsigned i = 0;
+    for(value = [popup widget]->p_values; value != NULL; value = value->p_next, i++)
+        value->b_selected = (i == [popup indexOfSelectedItem]);
+
+}
+
+- (NSSize)windowWillResize:(NSWindow *)sender toSize:(NSSize)frameSize
+{
+    NSView *contentView = [sender contentView];
+    assert([contentView isKindOfClass:[VLCDialogGridView class]]);
+    VLCDialogGridView *gridView = (VLCDialogGridView *)contentView;
+
+    NSRect rect = NSMakeRect(0, 0, 0, 0);
+    rect.size = frameSize;
+    rect = [sender contentRectForFrameRect:rect];
+    rect.size = [gridView flexSize:rect.size];
+    rect = [sender frameRectForContentRect:rect];
+    return rect.size;
+}
+
+- (BOOL)windowShouldClose:(id)sender
+{
+    assert([sender isKindOfClass:[VLCDialogWindow class]]);
+    VLCDialogWindow *window = sender;
+    extension_dialog_t *dialog = [window dialog];
+    extension_DialogClosed(dialog);
+    dialog->p_sys_intf = NULL;
+    return YES;
+}
+
+- (void)updateWidgets:(extension_dialog_t *)dialog
+{
+    extension_widget_t *widget;
+    VLCDialogWindow *dialogWindow = dialog->p_sys_intf;
+
+    FOREACH_ARRAY(widget, dialog->widgets)
+    {
+        if (!widget)
+            continue; /* Some widgets may be NULL at this point */
+
+        BOOL shouldDestroy = widget->b_kill;
+        NSView *control = widget->p_sys_intf;
+        BOOL update = widget->b_update;
+
+        if (!control && !shouldDestroy)
+        {
+            control = createControlFromWidget(widget, self);
+            updateControlFromWidget(control, widget, self);
+            widget->p_sys_intf = control;
+            update = YES; // Force update and repositionning
+            [control setHidden:widget->b_hide];
+        }
+
+        if (update && !shouldDestroy)
+        {
+            updateControlFromWidget(control, widget, self);
+            [control setHidden:widget->b_hide];
+
+            int row = widget->i_row - 1;
+            int col = widget->i_column - 1;
+            int hsp = __MAX( 1, widget->i_horiz_span );
+            int vsp = __MAX( 1, widget->i_vert_span );
+            if( row < 0 )
+            {
+                row = 4;
+                col = 0;
+            }
+
+            VLCDialogGridView *gridView = (VLCDialogGridView *)[dialogWindow contentView];
+            [gridView addSubview:control atRow:row column:col rowSpan:vsp colSpan:hsp];
+
+            widget->b_update = false;
+        }
+
+        if (shouldDestroy)
+        {
+            VLCDialogGridView *gridView = (VLCDialogGridView *)[dialogWindow contentView];
+            [gridView removeSubview:control];
+            [control release];
+            widget->p_sys_intf = NULL;
+        }
+    }
+    FOREACH_END()
+}
+
+/** Create a dialog
+ * Note: Lock on p_dialog->lock must be held. */
+- (VLCDialogWindow *)createExtensionDialog:(extension_dialog_t *)p_dialog
+{
+    VLCDialogWindow *dialogWindow = nil;
+
+    BOOL shouldDestroy = p_dialog->b_kill;
+    if (!shouldDestroy)
+    {
+        NSRect content = NSMakeRect(0, 0, 1, 1);
+        dialogWindow = [[VLCDialogWindow alloc] initWithContentRect:content 
+                                                          styleMask:NSTitledWindowMask | NSClosableWindowMask | NSResizableWindowMask
+                                                            backing:NSBackingStoreBuffered
+                                                              defer:NO];
+        [dialogWindow setDelegate:self];
+        [dialogWindow setDialog:p_dialog];
+        [dialogWindow setTitle:[NSString stringWithUTF8String:p_dialog->psz_title]];
+
+        VLCDialogGridView *gridView = [[VLCDialogGridView alloc] init];
+        [gridView setAutoresizingMask:NSViewHeightSizable | NSViewWidthSizable];
+        [dialogWindow setContentView:gridView];
+        [gridView release];
+
+        p_dialog->p_sys_intf = (void *)dialogWindow;
+    }
+
+    [self updateWidgets:p_dialog];
+
+    if (shouldDestroy)
+    {
+        [dialogWindow setDelegate:nil];
+        [dialogWindow close];
+        p_dialog->p_sys_intf = NULL;
+        dialogWindow = nil;
+    }
+
+    return dialogWindow;
+}
+
+/** Destroy a dialog
+ * Note: Lock on p_dialog->lock must be held. */
+- (int)destroyExtensionDialog:(extension_dialog_t *)p_dialog
+{
+    assert( p_dialog );
+
+    VLCDialogWindow *dialogWindow = ( VLCDialogWindow* ) p_dialog->p_sys_intf;
+    if( !dialogWindow )
+        return VLC_EGENERIC;
+
+    [VLCDialogWindow release];
+
+    p_dialog->p_sys_intf = NULL;
+    vlc_cond_signal( &p_dialog->cond );
+    return VLC_SUCCESS;
+}
+
+/**
+ * Update/Create/Destroy a dialog
+ **/
+- (VLCDialogWindow *)updateExtensionDialog:(NSValue *)o_value
+{
+    extension_dialog_t *p_dialog = [o_value pointerValue];
+
+    VLCDialogWindow *dialogWindow = ( VLCDialogWindow* ) p_dialog->p_sys_intf;
+    if( p_dialog->b_kill && !dialogWindow )
+    {
+        /* This extension could not be activated properly but tried
+           to create a dialog. We must ignore it. */
+        return NULL;
+    }
+
+    vlc_mutex_lock(&p_dialog->lock);
+    if( !p_dialog->b_kill && !dialogWindow )
+    {
+        dialogWindow = [self createExtensionDialog:p_dialog];
+
+        BOOL visible = !p_dialog->b_hide;
+        if (visible)
+        {
+            [dialogWindow center];
+            [dialogWindow makeKeyAndOrderFront:self];
+        }
+        else
+        {
+            [dialogWindow orderOut:nil];
+        }
+
+        [dialogWindow setHas_lock:NO];
+    }
+    else if( !p_dialog->b_kill && dialogWindow )
+    {
+        [dialogWindow setHas_lock:YES];
+        [self updateWidgets:p_dialog];
+        if( strcmp( [[dialogWindow title] UTF8String],
+                    p_dialog->psz_title ) != 0 )
+        {
+            NSString *titleString = [NSString stringWithCString:p_dialog->psz_title 
+                                                       encoding:NSASCIIStringEncoding];
+
+            [dialogWindow setTitle:titleString];
+        }
+
+        [dialogWindow setHas_lock:NO];
+
+        BOOL visible = !p_dialog->b_hide;
+        if (visible)
+        {
+            [dialogWindow center];
+            [dialogWindow makeKeyAndOrderFront:self];
+        }
+        else
+        {
+            [dialogWindow orderOut:nil];
+        }
+    }
+    else if( p_dialog->b_kill )
+    {
+        [self destroyExtensionDialog:p_dialog];
+    }
+    vlc_cond_signal( &p_dialog->cond );
+    vlc_mutex_unlock( &p_dialog->lock );
+    return dialogWindow;
+}
+
+/**
+ * Ask the dialog manager to create/update/kill the dialog. Thread-safe.
+ **/
+- (void)manageDialog:( extension_dialog_t *)p_dialog
+{
+    assert( p_dialog );
+    ExtensionsManager *extMgr = [ExtensionsManager getInstance:p_intf];
+    assert( extMgr != NULL );
+
+    NSValue *o_value = [NSValue valueWithPointer:p_dialog];
+    [self performSelectorOnMainThread:@selector(updateExtensionDialog:)
+                           withObject:o_value
+                        waitUntilDone:YES];
+}
+
+ at end

modules/gui/macosx/ExtensionsManager.h

+/*****************************************************************************
+ * extensions_manager.h: Extensions manager for Cocoa
+ ****************************************************************************
+ * Copyright (C) 2012 VideoLAN and authors
+ * $Id$
+ *
+ * Authors: Brendon Justin <brendonjustin at gmail.com>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#import "ExtensionsDialogProvider.h"
+#import "intf.h"
+
+#import <vlc_extensions.h>
+
+#import <Cocoa/Cocoa.h>
+
+ at class ExtensionsDialogProvider;
+
+ at protocol ExtensionsDelegate <NSObject>
+- (void)extensionsUpdated;
+ at end
+
+ at interface ExtensionsManager : NSObject
+{
+    intf_thread_t *p_intf;
+    extensions_manager_t *p_extensions_manager;
+    ExtensionsDialogProvider *p_edp;
+
+    NSMutableDictionary *p_extDict;
+
+    BOOL b_unloading;  ///< Work around threads + emit issues, see isUnloading
+    BOOL b_failed; ///< Flag set to true if we could not load the module
+
+    id <ExtensionsDelegate> delegate;
+};
+
++ (ExtensionsManager *)getInstance:(intf_thread_t *)_p_intf;
+
+- (id)initWithIntf:(intf_thread_t *)_p_intf;
+- (void)buildMenu:(NSMenu *)extMenu;
+- (extensions_manager_t *)getManager;
+
+- (BOOL)loadExtensions;
+- (void)unloadExtensions;
+- (void)reloadExtensions;
+
+- (void)triggerMenu:(id)sender;
+- (void)inputChanged:(input_thread_t *)p_input;
+- (void)playingChanged:(int)state;
+- (void)metaChanged:(input_item_t *)p_input;
+
+- (BOOL)isLoaded;
+- (BOOL)cannotLoad;
+
+ at property (readonly) BOOL isUnloading;
+
+ at end

modules/gui/macosx/ExtensionsManager.m

+/*****************************************************************************
+ * extensions_manager.cpp: Extensions manager for Cocoa
+ ****************************************************************************
+ * Copyright (C) 2009-2012 VideoLAN and authors
+ * $Id$
+ *
+ * Authors: Brendon Justin <brendonjustin at gmail.com>,
+ *          Jean-Philippe André < jpeg # videolan.org >
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+#import "ExtensionsManager.h"
+
+#import "ExtensionsDialogProvider.h"
+
+#import <vlc_modules.h>
+#import "assert.h"
+
+#define MENU_MAP(a,e) ((uint32_t)( (((uint16_t)a) << 16) | ((uint16_t)e) ))
+#define MENU_GET_ACTION(a) ( (uint16_t)( ((uint32_t)a) >> 16 ) )
+#define MENU_GET_EXTENSION(a) ( (uint16_t)( ((uint32_t)a) & 0xFFFF ) )
+
+ at implementation ExtensionsManager
+
+static ExtensionsManager* instance = nil;
+
+ at synthesize isUnloading = b_unloading;
+
++ (ExtensionsManager *)getInstance:( intf_thread_t *)_p_intf
+{
+    if( !instance )
+        instance = [[[ExtensionsManager alloc] initWithIntf:_p_intf] autorelease];
+    return instance;
+}
+
+- (id)initWithIntf:(intf_thread_t *)_p_intf
+{
+    if ((self = [super init]))
+    {
+        p_intf = _p_intf;
+        p_extensions_manager = NULL;
+        p_edp = NULL;
+
+        p_extDict = [[NSMutableDictionary alloc] init];
+
+        b_unloading = false;
+        b_failed = false;
+
+        delegate = nil;
+    }
+
+    return self;
+}
+
+/** Get the extensions_manager_t if it is loaded and hold the object */
+- (extensions_manager_t *)getManager
+{
+    if( !p_extensions_manager )
+        return NULL;
+
+    vlc_object_hold( p_extensions_manager );
+    return p_extensions_manager;
+}
+
+- (void)buildMenu:(NSMenu *)extMenu
+{
+    assert( extMenu != nil );
+    if( ![self isLoaded] )
+    {
+        // This case can happen: do nothing
+        return;
+    }
+
+    vlc_mutex_lock( &p_extensions_manager->lock );
+
+    extension_t *p_ext = NULL;
+    int i_ext = 0;
+    FOREACH_ARRAY( p_ext, p_extensions_manager->extensions )
+    {
+        bool b_Active = extension_IsActivated( p_extensions_manager, p_ext );
+
+        NSString *titleString = [NSString stringWithCString:p_ext->psz_title 
+                                                   encoding:NSASCIIStringEncoding];
+
+        if( b_Active && extension_HasMenu( p_extensions_manager, p_ext ) )
+        {
+            NSMenu *submenu = [[NSMenu alloc] initWithTitle:titleString];
+            NSMenuItem *submenuItem = [extMenu addItemWithTitle:titleString
+                                                         action:nil
+                                                  keyEquivalent:@""];
+
+            [extMenu setSubmenu:submenu forItem:submenuItem];
+            [submenu release];
+
+            char **ppsz_titles = NULL;
+            uint16_t *pi_ids = NULL;
+            size_t i_num = 0;
+
+            if( extension_GetMenu( p_extensions_manager, p_ext,
+                                   &ppsz_titles, &pi_ids ) == VLC_SUCCESS )
+            {
+                for( int i = 0; ppsz_titles[i] != NULL; ++i )
+                {
+                    ++i_num;
+                    titleString = [NSString stringWithCString:ppsz_titles[i]
+                                                     encoding:NSASCIIStringEncoding];
+                    NSMenuItem *menuItem = [submenu addItemWithTitle:titleString
+                                                              action:@selector(triggerMenu:)
+                                                       keyEquivalent:@""];
+                    [menuItem setTarget:self];
+                    menuItem.tag = MENU_MAP(pi_ids[i], i_ext);
+
+                    free( ppsz_titles[i] );
+                }
+                if( !i_num )
+                {
+                    NSMenuItem *menuItem = [submenu addItemWithTitle:@"Empty"
+                                                              action:@selector(triggerMenu:)
+                                                       keyEquivalent:@""];
+                    [menuItem setEnabled:NO];
+                }
+                free( ppsz_titles );
+                free( pi_ids );
+            }
+            else
+            {
+                msg_Warn( p_intf, "Could not get menu for extension '%s'",
+                          p_ext->psz_title );
+                NSMenuItem *menuItem = [submenu addItemWithTitle:@"Empty"
+                                                          action:@selector(triggerMenu:)
+                                                   keyEquivalent:@""];
+                [menuItem setEnabled:NO];
+            }
+
+            [submenu addItem:[NSMenuItem separatorItem]];
+
+            NSMenuItem *deactivateItem = [submenu addItemWithTitle:@"Deactivate" 
+                                                            action:@selector(triggerMenu:) 
+                                                     keyEquivalent:@""];
+            [deactivateItem setTarget:self];
+            deactivateItem.tag = MENU_MAP(0, i_ext);
+        }
+        else
+        {
+            NSMenuItem *menuItem = [extMenu addItemWithTitle:titleString
+                                                     action:@selector(triggerMenu:)
+                                              keyEquivalent:@""];
+            [menuItem setTarget:self];
+
+            if( !extension_TriggerOnly( p_extensions_manager, p_ext ) )
+            {
+                if ( b_Active )
+                    [menuItem setState:NSOnState];
+            }
+            menuItem.tag = MENU_MAP(0, i_ext);
+        }
+        i_ext++;
+    }
+    FOREACH_END()
+
+    vlc_mutex_unlock( &p_extensions_manager->lock );
+}
+
+- (BOOL)loadExtensions
+{
+    if( !p_extensions_manager )
+    {
+        p_extensions_manager = ( extensions_manager_t* )
+                    vlc_object_create( p_intf, sizeof( extensions_manager_t ) );
+        if( !p_extensions_manager )
+        {
+            b_failed = true;
+            [delegate extensionsUpdated];
+            return false;
+        }
+
+        p_extensions_manager->p_module =
+                module_need( p_extensions_manager, "extension", NULL, false );
+
+        if( !p_extensions_manager->p_module )
+        {
+            msg_Err( p_intf, "Unable to load extensions module" );
+            vlc_object_release( p_extensions_manager );
+            p_extensions_manager = NULL;
+            b_failed = true;
+            [delegate extensionsUpdated];
+            return false;
+        }
+
+        /* Initialize dialog provider */
+        p_edp = [ExtensionsDialogProvider sharedInstance:p_intf];
+        [p_edp retain];
+
+        if( !p_edp )
+        {
+            msg_Err( p_intf, "Unable to create dialogs provider for extensions" );
+            module_unneed( p_extensions_manager,
+                           p_extensions_manager->p_module );
+            vlc_object_release( p_extensions_manager );
+            p_extensions_manager = NULL;
+            b_failed = true;
+            [delegate extensionsUpdated];
+            return false;
+        }
+        b_unloading = false;
+    }
+    b_failed = false;
+    [delegate extensionsUpdated];
+    return true;
+}
+
+- (void)unloadExtensions
+{
+    if( !p_extensions_manager )
+        return;
+    b_unloading = true;
+    [p_edp release];
+    module_unneed( p_extensions_manager, p_extensions_manager->p_module );
+    vlc_object_release( p_extensions_manager );
+    p_extensions_manager = NULL;
+}
+
+- (void)reloadExtensions
+{
+    [self unloadExtensions];
+    [self loadExtensions];
+
+    if (delegate)
+        [delegate extensionsUpdated];
+}
+
+- (void)triggerMenu:(id)sender
+{
+    uint32_t identifier = [(NSMenuItem *)sender tag];
+
+    uint16_t i_ext = MENU_GET_EXTENSION( identifier );
+    uint16_t i_action = MENU_GET_ACTION( identifier );
+
+    vlc_mutex_lock( &p_extensions_manager->lock );
+
+    if( (int) i_ext > p_extensions_manager->extensions.i_size )
+    {
+        msg_Dbg( p_intf, "can't trigger extension with wrong id %d",
+                 (int) i_ext );
+        return;
+    }
+
+    extension_t *p_ext = ARRAY_VAL( p_extensions_manager->extensions, i_ext );
+    assert( p_ext != NULL);
+
+    vlc_mutex_unlock( &p_extensions_manager->lock );
+
+    if( i_action == 0 )
+    {
+        msg_Dbg( p_intf, "activating or triggering extension '%s', id %d",
+                 p_ext->psz_title, i_ext );
+
+        if( extension_TriggerOnly( p_extensions_manager, p_ext ) )
+        {
+            extension_Trigger( p_extensions_manager, p_ext );
+        }
+        else
+        {
+            if( !extension_IsActivated( p_extensions_manager, p_ext ) )
+                extension_Activate( p_extensions_manager, p_ext );
+            else
+                extension_Deactivate( p_extensions_manager, p_ext );
+        }
+    }
+    else
+    {
+        msg_Dbg( p_intf, "triggering extension '%s', on menu with id = 0x%x",
+                 p_ext->psz_title, i_action );
+
+        extension_TriggerMenu( p_extensions_manager, p_ext, i_action );
+    }
+}
+
+- (void)inputChanged:(input_thread_t *)p_input
+{
+    //This is unlikely, but can happen if no extension modules can be loaded.
+    if ( p_extensions_manager == NULL )
+        return ;
+    vlc_mutex_lock( &p_extensions_manager->lock );
+
+    extension_t *p_ext;
+    FOREACH_ARRAY( p_ext, p_extensions_manager->extensions )
+    {
+        if( extension_IsActivated( p_extensions_manager, p_ext ) )
+        {
+            extension_SetInput( p_extensions_manager, p_ext, p_input );
+        }
+    }
+    FOREACH_END()
+
+    vlc_mutex_unlock( &p_extensions_manager->lock );
+}
+
+- (void)playingChanged:(int)state
+{
+    //This is unlikely, but can happen if no extension modules can be loaded.
+    if ( p_extensions_manager == NULL )
+        return ;
+    vlc_mutex_lock( &p_extensions_manager->lock );
+
+    extension_t *p_ext;
+    FOREACH_ARRAY( p_ext, p_extensions_manager->extensions )
+    {
+        if( extension_IsActivated( p_extensions_manager, p_ext ) )
+        {
+            extension_PlayingChanged( p_extensions_manager, p_ext, state );
+        }
+    }
+    FOREACH_END()
+
+    vlc_mutex_unlock( &p_extensions_manager->lock );
+}
+
+- (void)metaChanged:(input_item_t *)p_input
+{
+    //This is unlikely, but can happen if no extension modules can be loaded.
+    if ( p_extensions_manager == NULL )
+        return ;
+    vlc_mutex_lock( &p_extensions_manager->lock );
+    extension_t *p_ext;
+    FOREACH_ARRAY( p_ext, p_extensions_manager->extensions )
+    {
+        if( extension_IsActivated( p_extensions_manager, p_ext ) )
+        {
+            extension_MetaChanged( p_extensions_manager, p_ext );
+        }
+    }
+    FOREACH_END()
+    vlc_mutex_unlock( &p_extensions_manager->lock );
+}
+
+- (void)dealloc
+{
+    msg_Dbg( p_intf, "Killing extension dialog provider" );
+    [ExtensionsDialogProvider killInstance];
+
+    vlc_object_release( p_extensions_manager );
+
+    [p_extDict release];
+
+    [super dealloc];
+}
+
+- (BOOL)isLoaded
+{
+    return p_extensions_manager != NULL;
+}
+
+- (BOOL)cannotLoad
+{
+    return b_unloading || b_failed;
+}
+
+ at end

modules/gui/macosx/Modules.am

@@ -17,6 +17,12 @@ SOURCES_macosx = \
 	MainWindow.m \
 	CoreInteraction.h \
 	CoreInteraction.m \
+	ExtensionsManager.h \
+	ExtensionsManager.m \
+	ExtensionsDialogProvider.h \
+	ExtensionsDialogProvider.m \
+	VLCUIWidgets.h \
+	VLCUIWidgets.m \
 	about.h \
 	about.m \
 	applescript.h \

modules/gui/macosx/VLCUIWidgets.h

+/*****************************************************************************
+ * VLCUIWidgets.h: Widgets for VLC's Minimal Dialog Provider for Mac OS X
+ *****************************************************************************
+ * Copyright (C) 2009-2012 the VideoLAN team
+ * $Id$
+ *
+ * Authors: Pierre d'Herbemont <pdherbemont # videolan dot>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+#import <Cocoa/Cocoa.h>
+#import <vlc_extensions.h>
+
+ at class VLCDialogGridView;
+
+ at interface VLCDialogButton : NSButton
+
+ at property (readwrite) extension_widget_t *widget;
+ at end
+
+
+ at interface VLCDialogPopUpButton : NSPopUpButton
+
+ at property (readwrite) extension_widget_t *widget;
+ at end
+
+
+ at interface VLCDialogTextField : NSTextField
+
+ at property (readwrite) extension_widget_t *widget;
+ at end
+
+
+ at interface VLCDialogWindow : NSWindow
+
+ at property (readwrite) extension_dialog_t *dialog;
+ at property (readwrite) BOOL has_lock;
+ at end
+
+
+ at interface VLCDialogList : NSTableView <NSTableViewDataSource>
+
+ at property (readwrite) extension_widget_t *widget;
+ at property (readwrite, retain) NSMutableArray *contentArray;
+ at end
+
+
+ at interface VLCDialogGridView : NSView {
+    NSUInteger _rowCount, _colCount;
+    NSMutableArray *_griddedViews;
+}
+
+- (void)addSubview:(NSView *)view atRow:(NSUInteger)row column:(NSUInteger)column rowSpan:(NSUInteger)rowSpan colSpan:(NSUInteger)colSpan;
+- (NSSize)flexSize:(NSSize)size;
+- (void)removeSubview:(NSView *)view;
+
+ at property (readonly) NSUInteger numViews;
+
+ at end
\ No newline at end of file

modules/gui/macosx/VLCUIWidgets.m

+/*****************************************************************************
+ * VLCUIWidgets.m: Widgets for VLC's Minimal Dialog Provider for Mac OS X
+ *****************************************************************************
+ * Copyright (C) 2009-2010 the VideoLAN team
+ * $Id$
+ *
+ * Authors: Pierre d'Herbemont <pdherbemont # videolan dot>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+#import "VLCUIWidgets.h"
+
+#import <stdlib.h>
+
+ at implementation VLCDialogButton
+ at synthesize widget;
+ at end
+
+
+ at implementation VLCDialogPopUpButton
+ at synthesize widget;
+ at end
+
+
+ at implementation VLCDialogTextField
+ at synthesize widget;
+ at end
+
+
+ at implementation VLCDialogWindow
+ at synthesize dialog;
+ at synthesize has_lock;
+ at end
+
+
+ at implementation VLCDialogList
+ at synthesize widget;
+ at synthesize contentArray;
+
+- (NSInteger)numberOfRowsInTableView:(NSTableView *)aTableView
+{
+    return [contentArray count];
+}
+
+- (id)tableView:(NSTableView *)aTableView objectValueForTableColumn:(NSTableColumn *)aTableColumn row:(NSInteger)rowIndex
+{
+    return [[contentArray objectAtIndex:rowIndex] objectForKey:@"text"];
+}
+ at end
+
+
+ at implementation VLCDialogGridView
+
+- (NSUInteger)numViews
+{
+    return [_griddedViews count];
+}
+
+- (id)init
+{
+    if ((self = [super init]))
+    {
+        _colCount = 0;
+        _rowCount = 0;
+        _griddedViews = [[NSMutableArray alloc] init];
+    }
+
+    return self;
+}
+- (void)dealloc
+{
+    [_griddedViews release];
+    [super dealloc];
+}
+
+- (void)recomputeCount
+{
+    _colCount = 0;
+    _rowCount = 0;
+    for (NSDictionary *obj in _griddedViews)
+    {
+        NSUInteger row = [[obj objectForKey:@"row"] intValue];
+        NSUInteger col = [[obj objectForKey:@"col"] intValue];
+        if (col + 1 > _colCount)
+            _colCount = col + 1;
+        if (row + 1 > _rowCount)
+            _rowCount = row + 1;
+    }
+}
+
+- (void)recomputeWindowSize
+{
+    [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(recomputeWindowSize) object:nil];
+
+    NSWindow *window = [self window];
+    NSRect frame = [window frame];
+    NSRect contentRect = [window contentRectForFrameRect:frame];
+    contentRect.size = [self flexSize:frame.size];
+    NSRect newFrame = [window frameRectForContentRect:contentRect];
+    newFrame.origin.y -= newFrame.size.height - frame.size.height;
+    newFrame.origin.x -= (newFrame.size.width - frame.size.width) / 2;
+    [window setFrame:newFrame display:YES animate:YES];
+}
+
+- (NSSize)objectSizeToFit:(NSView *)view
+{
+    if ([view isKindOfClass:[NSControl class]]) {
+        NSControl *control = (NSControl *)view;
+        return [[control cell] cellSize];
+    }
+    return [view frame].size;
+}
+
+- (CGFloat)marginX
+{
+    return 16;
+}
+- (CGFloat)marginY
+{
+    return 8;
+}
+
+- (CGFloat)constrainedHeightOfRow:(NSUInteger)targetRow
+{
+    CGFloat height = 0;
+    for(NSDictionary *obj in _griddedViews) {
+        NSUInteger row = [[obj objectForKey:@"row"] intValue];
+        if (row != targetRow)
+            continue;
+        NSUInteger rowSpan = [[obj objectForKey:@"rowSpan"] intValue];
+        if (rowSpan != 1)
+            continue;
+        NSView *view = [obj objectForKey:@"view"];
+        if ([view autoresizingMask] & NSViewHeightSizable)
+            continue;
+        NSSize sizeToFit = [self objectSizeToFit:view];
+        if (height < sizeToFit.height)
+            height = sizeToFit.height;
+    }
+    return height;
+}
+
+- (CGFloat)remainingRowsHeight
+{
+    NSUInteger height = [self marginY];
+    if (!_rowCount)
+        return 0;
+    NSUInteger autosizedRows = 0;
+    for (NSUInteger i = 0; i < _rowCount; i++) {
+        CGFloat constrainedHeight = [self constrainedHeightOfRow:i];
+        if (!constrainedHeight)
+            autosizedRows++;
+        height += constrainedHeight + [self marginY];
+    }
+    CGFloat remaining = 0;
+    if (height < self.bounds.size.height && autosizedRows)
+        remaining = (self.bounds.size.height - height) / autosizedRows;
+    if (remaining < 0)
+        remaining = 0;
+
+    return remaining;
+}
+
+- (CGFloat)heightOfRow:(NSUInteger)targetRow
+{
+    NSAssert(targetRow < _rowCount, @"accessing a non existing row");
+    CGFloat height = [self constrainedHeightOfRow:targetRow];
+    if (!height)
+        height = [self remainingRowsHeight];
+    return height;
+}
+
+
+- (CGFloat)topOfRow:(NSUInteger)targetRow
+{
+    CGFloat top = [self marginY];
+    for (NSUInteger i = 1; i < _rowCount - targetRow; i++)
+    {
+        top += [self heightOfRow:_rowCount - i] + [self marginY];
+    }
+    return top;
+}
+
+- (CGFloat)constrainedWidthOfColumn:(NSUInteger)targetColumn
+{
+    CGFloat width = 0;
+    for(NSDictionary *obj in _griddedViews) {
+        NSUInteger col = [[obj objectForKey:@"col"] intValue];
+        if (col != targetColumn)
+            continue;
+        NSUInteger colSpan = [[obj objectForKey:@"colSpan"] intValue];
+        if (colSpan != 1)
+            continue;
+        NSView *view = [obj objectForKey:@"view"];
+        if ([view autoresizingMask] & NSViewWidthSizable)
+            return 0;
+        NSSize sizeToFit = [self objectSizeToFit:view];
+        if (width < sizeToFit.width)
+            width = sizeToFit.width;
+    }
+    return width;
+}
+
+- (CGFloat)remainingColumnWidth
+{
+    NSUInteger width = [self marginX];
+    if (!_colCount)
+        return 0;
+    NSUInteger autosizedCol = 0;
+    for (NSUInteger i = 0; i < _colCount; i++) {
+        CGFloat constrainedWidth = [self constrainedWidthOfColumn:i];
+        if (!constrainedWidth)
+            autosizedCol++;
+        width += constrainedWidth + [self marginX];
+    }
+    CGFloat remaining = 0;
+    if (width < self.bounds.size.width && autosizedCol)
+        remaining = (self.bounds.size.width - width) / autosizedCol;
+    if (remaining < 0)
+        remaining = 0;
+    return remaining;
+}
+
+- (CGFloat)widthOfColumn:(NSUInteger)targetColumn
+{
+    CGFloat width = [self constrainedWidthOfColumn:targetColumn];
+    if (!width)
+        width = [self remainingColumnWidth];
+    return width;
+}
+
+
+- (CGFloat)leftOfColumn:(NSUInteger)targetColumn
+{
+    CGFloat left = [self marginX];
+    for (NSUInteger i = 0; i < targetColumn; i++)
+    {
+        left += [self widthOfColumn:i] + [self marginX];
+    }
+    return left;
+}
+
+- (void)relayout
+{
+    for(NSDictionary *obj in _griddedViews) {
+        NSUInteger row = [[obj objectForKey:@"row"] intValue];
+        NSUInteger col = [[obj objectForKey:@"col"] intValue];
+        NSUInteger rowSpan = [[obj objectForKey:@"rowSpan"] intValue];
+        NSUInteger colSpan = [[obj objectForKey:@"colSpan"] intValue];
+        NSView *view = [obj objectForKey:@"view"];
+        NSRect rect;
+
+        // Get the height
+        if ([view autoresizingMask] & NSViewHeightSizable || rowSpan > 1) {
+            CGFloat height = 0;
+            for (NSUInteger r = 0; r < rowSpan; r++) {
+                if (row + r >= _rowCount)
+                    break;
+                height += [self heightOfRow:row + r] + [self marginY];
+            }
+            rect.size.height = height - [self marginY];
+        }
+        else
+            rect.size.height = [self objectSizeToFit:view].height;
+
+        // Get the width
+        if ([view autoresizingMask] & NSViewWidthSizable) {
+            CGFloat width = 0;
+            for (NSUInteger c = 0; c < colSpan; c++)
+                width += [self widthOfColumn:col + c] + [self marginX];
+            rect.size.width = width - [self marginX];
+        }
+        else
+            rect.size.width = [self objectSizeToFit:view].width;
+
+        // Top corner
+        rect.origin.y = [self topOfRow:row] + ([self heightOfRow:row] - rect.size.height) / 2;
+        rect.origin.x = [self leftOfColumn:col];
+
+        [view setFrame:rect];
+        [view setNeedsDisplay:YES];
+    }
+}
+
+- (NSMutableDictionary *)objectForView:(NSView *)view
+{
+    for (NSMutableDictionary *dict in _griddedViews)
+    {
+        if ([dict objectForKey:@"view"] == view)
+            return dict;
+    }
+    return nil;
+}
+
+- (void)addSubview:(NSView *)view atRow:(NSUInteger)row column:(NSUInteger)column
+                                                       rowSpan:(NSUInteger)rowSpan
+                                                       colSpan:(NSUInteger)colSpan
+{
+    if (row + 1 > _rowCount)
+        _rowCount = row + 1;
+    if (column + 1 > _colCount)
+        _colCount = column + 1;
+
+    NSMutableDictionary *dict = [self objectForView:view];
+    if (!dict) {
+        dict = [NSMutableDictionary dictionary];
+        [dict setObject:view forKey:@"view"];
+        [_griddedViews addObject:dict];
+    }
+    [dict setObject:[NSNumber numberWithInt:rowSpan] forKey:@"rowSpan"];
+    [dict setObject:[NSNumber numberWithInt:colSpan] forKey:@"colSpan"];
+    [dict setObject:[NSNumber numberWithInt:row] forKey:@"row"];
+    [dict setObject:[NSNumber numberWithInt:column] forKey:@"col"];
+
+    [self addSubview:view];
+    [self relayout];
+
+    // Recompute the size of the window after making sure we won't see anymore update
+    [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(recomputeWindowSize) object:nil];
+    [self performSelector:@selector(recomputeWindowSize) withObject:nil afterDelay:0.1];
+}
+
+- (void)removeSubview:(NSView *)view
+{
+    NSDictionary *dict = [self objectForView:view];
+    if (dict)
+        [_griddedViews removeObject:dict];
+    [view removeFromSuperview];
+
+    [self recomputeCount];
+    [self recomputeWindowSize];
+
+    [self relayout];
+    [self setNeedsDisplay:YES];
+}
+
+- (void)setFrame:(NSRect)frameRect
+{
+    [super setFrame:frameRect];
+    [self relayout];
+}
+
+- (NSSize)flexSize:(NSSize)size
+{
+    if (!_rowCount || !_colCount)
+        return size;
+
+    CGFloat minHeight = [self marginY];
+    BOOL canFlexHeight = NO;
+    for (NSUInteger i = 0; i < _rowCount; i++) {
+        CGFloat constrained = [self constrainedHeightOfRow:i];
+        if (!constrained) {
+            canFlexHeight = YES;
+            constrained = 128;
+        }
+        minHeight += constrained + [self marginY];
+    }
+
+    CGFloat minWidth = [self marginX];
+    BOOL canFlexWidth = NO;
+    for (NSUInteger i = 0; i < _colCount; i++) {
+        CGFloat constrained = [self constrainedWidthOfColumn:i];
+        if (!constrained) {
+            canFlexWidth = YES;
+            constrained = 128;
+        }
+        minWidth += constrained + [self marginX];
+    }
+    if (size.width < minWidth)
+        size.width = minWidth;
+    if (size.height < minHeight)
+        size.height = minHeight;
+    if (!canFlexHeight)
+        size.height = minHeight;
+    if (!canFlexWidth)
+        size.width = minWidth;
+    return size;
+}
+
+ at end