ui/gtk/list.c

changeset 431
bb7da585debc
parent 413
b8e41d42f400
child 436
222205801430
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ui/gtk/list.c	Sat Jan 04 16:38:48 2025 +0100
@@ -0,0 +1,1278 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2017 Olaf Wintermann. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+
+#include "../common/context.h"
+#include "../common/object.h"
+#include "container.h"
+
+#include <cx/array_list.h>
+#include <cx/linked_list.h>
+
+#include "list.h"
+#include "icon.h"
+#include "menu.h"
+#include "dnd.h"
+
+
+void* ui_strmodel_getvalue(void *elm, int column) {
+    return column == 0 ? elm : NULL;
+}
+
+static GtkListStore* create_list_store(UiList *list, UiModel *model) {
+    int columns = model->columns;
+    GType types[2*columns];
+    int c = 0;
+    for(int i=0;i<columns;i++,c++) {
+        switch(model->types[i]) {
+            case UI_STRING: 
+            case UI_STRING_FREE: types[c] = G_TYPE_STRING; break;
+            case UI_INTEGER: types[c] = G_TYPE_INT; break;
+            case UI_ICON: types[c] = G_TYPE_OBJECT; break;
+            case UI_ICON_TEXT: 
+            case UI_ICON_TEXT_FREE: {
+                types[c] = G_TYPE_OBJECT;
+                types[++c] = G_TYPE_STRING;
+            }
+        }
+    }
+    
+    GtkListStore *store = gtk_list_store_newv(c, types);
+    
+    if(list) {
+        void *elm = list->first(list);
+	while(elm) {
+            // insert new row
+            GtkTreeIter iter;
+            gtk_list_store_insert (store, &iter, -1);
+            
+            // set column values
+            int c = 0;
+            for(int i=0;i<columns;i++,c++) {
+                void *data = model->getvalue(elm, c);
+                
+                GValue value = G_VALUE_INIT;
+                switch(model->types[i]) {
+                    case UI_STRING: 
+                    case UI_STRING_FREE: {
+                        g_value_init(&value, G_TYPE_STRING);
+                        g_value_set_string(&value, data);
+                        if(model->types[i] == UI_STRING_FREE) {
+                            free(data);
+                        }
+                        break;
+                    }
+                    case UI_INTEGER: {
+                        g_value_init(&value, G_TYPE_INT);
+                        int *intptr = data;
+                        g_value_set_int(&value, *intptr);
+                        break;
+                    }
+                    case UI_ICON: {
+                        g_value_init(&value, G_TYPE_OBJECT);
+                        UiIcon *icon = data;
+#if GTK_MAJOR_VERSION >= 4
+                        g_value_set_object(&value, icon->info); // TODO: does this work?
+#else
+                        if(!icon->pixbuf && icon->info) {
+                            GError *error = NULL;
+                            GdkPixbuf *pixbuf = gtk_icon_info_load_icon(icon->info, &error);
+                            icon->pixbuf = pixbuf;
+                        }
+                        
+                        if(icon->pixbuf) {
+                            g_value_set_object(&value, icon->pixbuf);
+                        }
+#endif
+                        break;
+                    }
+                    case UI_ICON_TEXT:
+                    case UI_ICON_TEXT_FREE: {
+                        UiIcon *icon = data;
+#if GTK_MAJOR_VERSION >= 4
+                        if(icon) {
+                            GValue iconvalue = G_VALUE_INIT;
+                            g_value_init(&iconvalue, G_TYPE_OBJECT);
+                            g_value_set_object(&iconvalue, ui_icon_pixbuf(icon));
+                            gtk_list_store_set_value(store, &iter, c, &iconvalue);
+                        }
+#else
+                        GValue pixbufvalue = G_VALUE_INIT;
+                        if(icon) {
+                            if(!icon->pixbuf && icon->info) {
+                                GError *error = NULL;
+                                GdkPixbuf *pixbuf = gtk_icon_info_load_icon(icon->info, &error);
+                                icon->pixbuf = pixbuf;
+                            }
+                            g_value_init(&pixbufvalue, G_TYPE_OBJECT);
+                            g_value_set_object(&pixbufvalue, icon->pixbuf);
+                            gtk_list_store_set_value(store, &iter, c, &pixbufvalue);
+                        }
+#endif
+                        c++;
+                        
+                        char *str = model->getvalue(elm, c);
+                        g_value_init(&value, G_TYPE_STRING);
+                        g_value_set_string(&value, str);
+                        if(model->types[i] == UI_ICON_TEXT_FREE) {
+                            free(str);
+                        }
+                        break;
+                    }
+                }
+                
+                gtk_list_store_set_value(store, &iter, c, &value);
+            }
+            
+            // next row
+            elm = list->next(list);
+        }
+    }
+    
+    return store;
+}
+
+
+UIWIDGET ui_listview_create(UiObject *obj, UiListArgs args) {
+    UiObject* current = uic_current_obj(obj);
+    
+    // create treeview
+    GtkWidget *view = gtk_tree_view_new();
+    ui_set_name_and_style(view, args.name, args.style_class);
+    ui_set_widget_groups(obj->ctx, view, args.groups);
+    GtkCellRenderer *renderer = gtk_cell_renderer_text_new();
+    GtkTreeViewColumn *column = gtk_tree_view_column_new_with_attributes(NULL, renderer, "text", 0, NULL);
+    gtk_tree_view_append_column(GTK_TREE_VIEW(view), column);
+    
+    gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(view), FALSE);
+#ifdef UI_GTK3
+#if GTK_MINOR_VERSION >= 8
+    //gtk_tree_view_set_activate_on_single_click(GTK_TREE_VIEW(view), TRUE);
+#else
+    // TODO: implement for older gtk3
+#endif
+#else
+    // TODO: implement for gtk2
+#endif
+    
+    UiModel *model = ui_model(obj->ctx, UI_STRING, "", -1);
+    model->getvalue = args.getvalue ? args.getvalue : ui_strmodel_getvalue;
+    
+    UiVar* var = uic_widget_var(obj->ctx, current->ctx, args.list, args.varname, UI_VAR_LIST);
+    
+    UiList *list = var ? var->value : NULL;
+    GtkListStore *listmodel = create_list_store(list, model);
+    gtk_tree_view_set_model(GTK_TREE_VIEW(view), GTK_TREE_MODEL(listmodel));
+    g_object_unref(listmodel);
+    
+    UiListView *listview = malloc(sizeof(UiListView));
+    listview->obj = obj;
+    listview->widget = view;
+    listview->var = var;
+    listview->model = model;
+    g_signal_connect(
+                view,
+                "destroy",
+                G_CALLBACK(ui_listview_destroy),
+                listview);
+    
+    // bind var
+    list->update = ui_listview_update;
+    list->getselection = ui_listview_getselection;
+    list->setselection = ui_listview_setselection;
+    list->obj = listview;
+    
+    // add callback
+    UiTreeEventData *event = malloc(sizeof(UiTreeEventData));
+    event->obj = obj;
+    event->activate = args.onactivate;
+    event->activatedata = args.onactivatedata;
+    event->selection = args.onselection;
+    event->selectiondata = args.onselectiondata;
+    g_signal_connect(
+            view,
+            "destroy",
+            G_CALLBACK(ui_destroy_userdata),
+            event);
+    
+    if(args.onactivate) {
+        g_signal_connect(
+                view,
+                "row-activated",
+                G_CALLBACK(ui_listview_activate_event),
+                event);
+    }
+    if(args.onselection) {
+        GtkTreeSelection *selection = gtk_tree_view_get_selection(
+                GTK_TREE_VIEW(view));
+        g_signal_connect(
+                selection,
+                "changed",
+                G_CALLBACK(ui_listview_selection_event),
+                event);
+    }
+    if(args.contextmenu) {
+        UIMENU menu = ui_contextmenu_create(args.contextmenu, obj, view);
+        ui_widget_set_contextmenu(view, menu);
+    }
+    
+    
+    // add widget to the current container
+    GtkWidget *scroll_area = SCROLLEDWINDOW_NEW();
+    gtk_scrolled_window_set_policy(
+            GTK_SCROLLED_WINDOW(scroll_area),
+            GTK_POLICY_AUTOMATIC,
+            GTK_POLICY_AUTOMATIC); // GTK_POLICY_ALWAYS  
+    SCROLLEDWINDOW_SET_CHILD(scroll_area, view);
+    
+    UI_APPLY_LAYOUT1(current, args);
+    current->container->add(current->container, scroll_area, FALSE);
+    
+    // ct->current should point to view, not scroll_area, to make it possible
+    // to add a context menu
+    current->container->current = view;
+    
+    return scroll_area;
+}
+
+/*
+static void drag_begin(GtkWidget *widget, GdkDragContext *context, gpointer udata) {
+    printf("drag begin\n");
+    
+}
+
+static void drag_end(
+        GtkWidget *widget,
+        GdkDragContext *context,
+        guint time,
+        gpointer udata)
+{
+    printf("drag end\n");
+    
+}
+*/
+
+/*
+static GtkTargetEntry targetentries[] =
+    {
+      { "STRING",        0, 0 },
+      { "text/plain",    0, 1 },
+      { "text/uri-list", 0, 2 },
+    };
+*/
+
+UIWIDGET ui_table_create(UiObject *obj, UiListArgs args) {
+    UiObject* current = uic_current_obj(obj);
+    
+    // create treeview
+    GtkWidget *view = gtk_tree_view_new();
+    
+    UiModel *model = args.model;
+    int columns = model ? model->columns : 0;
+    
+    int addi = 0;
+    for(int i=0;i<columns;i++) {
+        GtkTreeViewColumn *column = NULL;
+        if(model->types[i] == UI_ICON_TEXT) {
+            column = gtk_tree_view_column_new();
+            gtk_tree_view_column_set_title(column, model->titles[i]);
+            
+            GtkCellRenderer *iconrenderer = gtk_cell_renderer_pixbuf_new();
+            GtkCellRenderer *textrenderer = gtk_cell_renderer_text_new();
+            
+            gtk_tree_view_column_pack_end(column, textrenderer, TRUE);
+            gtk_tree_view_column_pack_start(column, iconrenderer, FALSE);
+            
+            
+            gtk_tree_view_column_add_attribute(column, iconrenderer, "pixbuf", i);
+            gtk_tree_view_column_add_attribute(column, textrenderer, "text", i+1);
+            
+            addi++;
+        } else if (model->types[i] == UI_ICON) {
+            GtkCellRenderer *iconrenderer = gtk_cell_renderer_pixbuf_new();
+            column = gtk_tree_view_column_new_with_attributes(
+                model->titles[i],
+                iconrenderer,
+                "pixbuf",
+                i + addi,
+                NULL);
+        } else {
+            GtkCellRenderer *renderer = gtk_cell_renderer_text_new();
+            column = gtk_tree_view_column_new_with_attributes(
+                model->titles[i],
+                renderer,
+                "text",
+                i + addi,
+                NULL);
+        }
+        
+        int colsz = model->columnsize[i];
+        if(colsz > 0) {
+            gtk_tree_view_column_set_fixed_width(column, colsz);
+        } else if(colsz < 0) {
+            gtk_tree_view_column_set_expand(column, TRUE);
+        }
+        
+        gtk_tree_view_column_set_resizable(column, TRUE);
+        gtk_tree_view_append_column(GTK_TREE_VIEW(view), column);
+    }
+    
+    //gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(view), FALSE);
+#ifdef UI_GTK3
+    //gtk_tree_view_set_activate_on_single_click(GTK_TREE_VIEW(view), TRUE);
+#else
+    
+#endif
+    
+    UiVar* var = uic_widget_var(obj->ctx, current->ctx, args.list, args.varname, UI_VAR_LIST);
+    
+    UiList *list = var ? var->value : NULL;
+    GtkListStore *listmodel = create_list_store(list, model);
+    gtk_tree_view_set_model(GTK_TREE_VIEW(view), GTK_TREE_MODEL(listmodel));
+    g_object_unref(listmodel);
+    
+    //g_signal_connect(view, "drag-begin", G_CALLBACK(drag_begin), NULL);
+    //g_signal_connect(view, "drag-end", G_CALLBACK(drag_end), NULL);
+       
+    // add TreeView as observer to the UiList to update the TreeView if the
+    // data changes
+    UiListView *tableview = malloc(sizeof(UiListView));
+    tableview->obj = obj;
+    tableview->widget = view;
+    tableview->var = var;
+    tableview->model = model;
+    tableview->ondragstart = args.ondragstart;
+    tableview->ondragstartdata = args.ondragstartdata;
+    tableview->ondragcomplete = args.ondragcomplete;
+    tableview->ondragcompletedata = args.ondragcompletedata;
+    tableview->ondrop = args.ondrop;
+    tableview->ondropdata = args.ondropsdata;
+    g_signal_connect(
+                view,
+                "destroy",
+                G_CALLBACK(ui_listview_destroy),
+                tableview);
+    
+    // bind var
+    list->update = ui_listview_update;
+    list->getselection = ui_listview_getselection;
+    list->setselection = ui_listview_setselection;
+    list->obj = tableview;
+    
+    // add callback
+    UiTreeEventData *event = ui_malloc(obj->ctx, sizeof(UiTreeEventData));
+    event->obj = obj;
+    event->activate = args.onactivate;
+    event->selection = args.onselection;
+    event->activatedata = args.onactivatedata;
+    event->selectiondata = args.onselectiondata;
+    if(args.onactivate) {
+        g_signal_connect(
+                view,
+                "row-activated",
+                G_CALLBACK(ui_listview_activate_event),
+                event);
+    }
+    if(args.onselection) {
+        GtkTreeSelection *selection = gtk_tree_view_get_selection(
+                GTK_TREE_VIEW(view));
+        g_signal_connect(
+                selection,
+                "changed",
+                G_CALLBACK(ui_listview_selection_event),
+                event);
+    }
+    // TODO: destroy callback
+    
+    
+    if(args.ondragstart) {
+        ui_listview_add_dnd(tableview, &args);
+    }
+    if(args.ondrop) {
+        ui_listview_enable_drop(tableview, &args);
+    }
+      
+    GtkTreeSelection *selection = gtk_tree_view_get_selection (GTK_TREE_VIEW(view));
+    if(args.multiselection) {
+        gtk_tree_selection_set_mode(selection, GTK_SELECTION_MULTIPLE);
+    }
+    
+    // add widget to the current container
+    GtkWidget *scroll_area = SCROLLEDWINDOW_NEW();
+    gtk_scrolled_window_set_policy(
+            GTK_SCROLLED_WINDOW(scroll_area),
+            GTK_POLICY_AUTOMATIC,
+            GTK_POLICY_AUTOMATIC); // GTK_POLICY_ALWAYS  
+    SCROLLEDWINDOW_SET_CHILD(scroll_area, view);
+    
+    if(args.contextmenu) {
+        UIMENU menu = ui_contextmenu_create(args.contextmenu, obj, scroll_area);
+#if GTK_MAJOR_VERSION >= 4
+        ui_widget_set_contextmenu(scroll_area, menu);
+#else
+        ui_widget_set_contextmenu(view, menu);
+#endif
+    }
+    
+    UI_APPLY_LAYOUT1(current, args);
+    current->container->add(current->container, scroll_area, FALSE);
+    
+    // ct->current should point to view, not scroll_area, to make it possible
+    // to add a context menu
+    current->container->current = view;
+    
+    return scroll_area;
+}
+
+#if GTK_MAJOR_VERSION >= 4
+
+static GdkContentProvider *ui_listview_dnd_prepare(GtkDragSource *source, double x, double y, void *data) {
+    //printf("drag prepare\n");
+    UiListView *listview = data;
+    
+    UiDnD *dnd = ui_create_dnd();
+    GdkContentProvider *provider = NULL;
+    
+    
+    if(listview->ondragstart) {
+        UiEvent event;
+        event.obj = listview->obj;
+        event.window = event.obj->window;
+        event.document = event.obj->ctx->document;
+        event.eventdata = dnd;
+        event.intval = 0;
+        listview->ondragstart(&event, listview->ondragstartdata);
+    }
+    
+    size_t numproviders = cxListSize(dnd->providers);
+    if(numproviders > 0) {
+        GdkContentProvider **providers = (GdkContentProvider**)cxListAt(dnd->providers, 0);
+        provider = gdk_content_provider_new_union(providers, numproviders);
+    }
+    ui_dnd_free(dnd);
+    
+    return provider;
+}
+
+static void ui_listview_drag_begin(GtkDragSource *self, GdkDrag *drag, gpointer userdata) {
+    //printf("drag begin\n");
+}
+
+static void ui_listview_drag_end(GtkDragSource *self, GdkDrag *drag, gboolean delete_data, gpointer user_data) {
+    //printf("drag end\n");
+    UiListView *listview = user_data;
+    if(listview->ondragcomplete) {
+        UiDnD dnd;
+        dnd.target = NULL;
+        dnd.value = NULL;
+        dnd.providers = NULL;
+        dnd.selected_action = gdk_drag_get_selected_action(drag);
+        dnd.delete = delete_data;
+        dnd.accept = FALSE;
+        
+        UiEvent event;
+        event.obj = listview->obj;
+        event.window = event.obj->window;
+        event.document = event.obj->ctx->document;
+        event.eventdata = &dnd;
+        event.intval = 0;
+        listview->ondragcomplete(&event, listview->ondragcompletedata);
+    }
+}
+
+static gboolean ui_listview_drop(
+        GtkDropTarget *target,
+        const GValue* value,
+        gdouble x,
+        gdouble y,
+        gpointer user_data)
+{
+    UiListView *listview = user_data;
+    UiDnD dnd;
+    dnd.providers = NULL;
+    dnd.target = target;
+    dnd.value = value;
+    dnd.selected_action = 0;
+    dnd.delete = FALSE;
+    dnd.accept = FALSE;
+    
+    if(listview->ondrop) {
+        dnd.accept = TRUE;
+        UiEvent event;
+        event.obj = listview->obj;
+        event.window = event.obj->window;
+        event.document = event.obj->ctx->document;
+        event.eventdata = &dnd;
+        event.intval = 0;
+        listview->ondrop(&event, listview->ondropdata);
+    }
+    
+    return dnd.accept;
+}
+
+void ui_listview_add_dnd(UiListView *listview, UiListArgs *args) {
+    GtkDragSource *dragsource = gtk_drag_source_new();
+    gtk_widget_add_controller(listview->widget, GTK_EVENT_CONTROLLER(dragsource));
+    g_signal_connect (dragsource, "prepare", G_CALLBACK (ui_listview_dnd_prepare), listview);
+    g_signal_connect(
+            dragsource,
+            "drag-begin",
+            G_CALLBACK(ui_listview_drag_begin),
+            listview);
+    g_signal_connect(
+            dragsource,
+            "drag-end",
+            G_CALLBACK(ui_listview_drag_end),
+            listview);
+}
+
+void ui_listview_enable_drop(UiListView *listview, UiListArgs *args) {
+    GtkDropTarget *target = gtk_drop_target_new(G_TYPE_INVALID, GDK_ACTION_COPY);
+    gtk_widget_add_controller(listview->widget, GTK_EVENT_CONTROLLER(target));
+    GType default_types[2] = { GDK_TYPE_FILE_LIST, G_TYPE_STRING };
+    gtk_drop_target_set_gtypes(target, default_types, 2);
+    g_signal_connect(target, "drop", G_CALLBACK(ui_listview_drop), listview);
+}
+
+#else
+
+static GtkTargetEntry targetentries[] =
+{
+    { "STRING",        0, 0 },
+    { "text/plain",    0, 1 },
+    { "text/uri-list", 0, 2 },
+};
+
+static void ui_listview_drag_getdata(
+        GtkWidget* self,
+        GdkDragContext* context,
+        GtkSelectionData* data,
+        guint info,
+        guint time,
+        gpointer user_data)
+{
+    UiListView *listview = user_data;
+    UiDnD dnd;
+    dnd.context = context;
+    dnd.data = data;
+    dnd.selected_action = 0;
+    dnd.delete = FALSE;
+    dnd.accept = FALSE;
+    
+    if(listview->ondragstart) {
+        UiEvent event;
+        event.obj = listview->obj;
+        event.window = event.obj->window;
+        event.document = event.obj->ctx->document;
+        event.eventdata = &dnd;
+        event.intval = 0;
+        listview->ondragstart(&event, listview->ondragstartdata);
+    }
+}
+
+static void ui_listview_drag_end(
+        GtkWidget *widget,
+        GdkDragContext *context,
+        guint time,
+        gpointer user_data)
+{
+    UiListView *listview = user_data;
+    UiDnD dnd;
+    dnd.context = context;
+    dnd.data = NULL;
+    dnd.selected_action = gdk_drag_context_get_selected_action(context);
+    dnd.delete = dnd.selected_action == UI_DND_ACTION_MOVE ? TRUE : FALSE;
+    dnd.accept = FALSE;
+    if(listview->ondragcomplete) {
+        UiEvent event;
+        event.obj = listview->obj;
+        event.window = event.obj->window;
+        event.document = event.obj->ctx->document;
+        event.eventdata = &dnd;
+        event.intval = 0;
+        listview->ondragcomplete(&event, listview->ondragcompletedata);
+    }
+}
+
+void ui_listview_add_dnd(UiListView *listview, UiListArgs *args) {
+    gtk_tree_view_enable_model_drag_source(
+            GTK_TREE_VIEW(listview->widget),
+            GDK_BUTTON1_MASK,
+            targetentries,
+            2,
+            GDK_ACTION_COPY);
+    
+    g_signal_connect(listview->widget, "drag-data-get", G_CALLBACK(ui_listview_drag_getdata), listview);
+    g_signal_connect(listview->widget, "drag-end", G_CALLBACK(ui_listview_drag_end), listview);
+}
+
+
+
+
+static void ui_listview_drag_data_received(
+        GtkWidget *self,
+        GdkDragContext *context,
+        gint x,
+        gint y,
+        GtkSelectionData *data,
+        guint info,
+        guint time,
+        gpointer user_data)
+{
+    UiListView *listview = user_data;
+    UiDnD dnd;
+    dnd.context = context;
+    dnd.data = data;
+    dnd.selected_action = 0;
+    dnd.delete = FALSE;
+    dnd.accept = FALSE;
+    
+    if(listview->ondrop) {
+        dnd.accept = TRUE;
+        UiEvent event;
+        event.obj = listview->obj;
+        event.window = event.obj->window;
+        event.document = event.obj->ctx->document;
+        event.eventdata = &dnd;
+        event.intval = 0;
+        listview->ondrop(&event, listview->ondropdata);
+    }
+}
+
+void ui_listview_enable_drop(UiListView *listview, UiListArgs *args) {
+    gtk_tree_view_enable_model_drag_dest(
+            GTK_TREE_VIEW(listview->widget),
+            targetentries,
+            3,
+            GDK_ACTION_COPY);
+    if(listview->ondrop) {
+        g_signal_connect(listview->widget, "drag_data_received", G_CALLBACK(ui_listview_drag_data_received), listview);
+    }
+}
+
+#endif
+
+
+GtkWidget* ui_get_tree_widget(UIWIDGET widget) {
+    return SCROLLEDWINDOW_GET_CHILD(widget);
+}
+
+static char** targets2array(char *target0, va_list ap, int *nelm) {
+    int al = 16;
+    char **targets = calloc(16, sizeof(char*));
+    targets[0] = target0;
+    
+    int i = 1;
+    char *target;
+    while((target = va_arg(ap, char*)) != NULL) {
+        if(i >= al) {
+            al *= 2;
+            targets = realloc(targets, al*sizeof(char*));
+        }
+        targets[i] = target;
+        i++;
+    }
+    
+    *nelm = i;
+    return targets;
+}
+
+/*
+static GtkTargetEntry* targetstr2gtktargets(char **str, int nelm) {
+    GtkTargetEntry *targets = calloc(nelm, sizeof(GtkTargetEntry));
+    for(int i=0;i<nelm;i++) {
+        targets[i].target = str[i];
+    }
+    return targets;
+}
+*/
+
+void ui_table_dragsource(UIWIDGET tablewidget, int actions, char *target0, ...) { 
+    va_list ap;
+    va_start(ap, target0);
+    int nelm;
+    char **targets = targets2array(target0, ap, &nelm);
+    va_end(ap);
+    
+    // disabled
+    //ui_table_dragsource_a(tablewidget, actions, targets, nelm);
+    
+    free(targets);
+}
+
+/*
+void ui_table_dragsource_a(UIWIDGET tablewidget, int actions, char **targets, int nelm) {
+    GtkTargetEntry* t = targetstr2gtktargets(targets, nelm);
+    gtk_tree_view_enable_model_drag_source(
+            GTK_TREE_VIEW(ui_get_tree_widget(tablewidget)),
+            GDK_BUTTON1_MASK,
+            t,
+            nelm,
+            GDK_ACTION_COPY|GDK_ACTION_MOVE|GDK_ACTION_LINK);
+    free(t);
+}
+
+
+void ui_table_dragdest(UIWIDGET tablewidget, int actions, char *target0, ...) {
+    va_list ap;
+    va_start(ap, target0);
+    int nelm;
+    char **targets = targets2array(target0, ap, &nelm);
+    va_end(ap);
+    ui_table_dragdest_a(tablewidget, actions, targets, nelm);
+    free(targets);
+}
+
+void ui_table_dragdest_a(UIWIDGET tablewidget, int actions, char **targets, int nelm) {
+    GtkTargetEntry* t = targetstr2gtktargets(targets, nelm);
+    gtk_tree_view_enable_model_drag_dest(
+            GTK_TREE_VIEW(ui_get_tree_widget(tablewidget)),
+            t,
+            nelm,
+            GDK_ACTION_COPY|GDK_ACTION_MOVE|GDK_ACTION_LINK);
+    free(t);
+}
+*/
+ 
+void ui_listview_update(UiList *list, int i) {
+    UiListView *view = list->obj;
+    GtkListStore *store = create_list_store(list, view->model);
+    gtk_tree_view_set_model(GTK_TREE_VIEW(view->widget), GTK_TREE_MODEL(store));
+    g_object_unref(G_OBJECT(store));
+}
+
+UiListSelection ui_listview_getselection(UiList *list) {
+    UiListView *view = list->obj;
+    UiListSelection selection = ui_listview_selection(
+            gtk_tree_view_get_selection(GTK_TREE_VIEW(view->widget)),
+            NULL);
+    return selection;
+}
+
+void ui_listview_setselection(UiList *list, UiListSelection selection) {
+    UiListView *view = list->obj;
+    GtkTreeSelection *sel = gtk_tree_view_get_selection(GTK_TREE_VIEW(view->widget));
+    GtkTreePath *path = gtk_tree_path_new_from_indicesv(selection.rows, selection.count);
+    gtk_tree_selection_select_path(sel, path);
+    //g_object_unref(path);
+}
+
+void ui_listview_destroy(GtkWidget *w, UiListView *v) {
+    //gtk_tree_view_set_model(GTK_TREE_VIEW(w), NULL);
+    ui_destroy_boundvar(v->obj->ctx, v->var);
+    free(v);
+}
+
+void ui_combobox_destroy(GtkWidget *w, UiListView *v) {
+    ui_destroy_boundvar(v->obj->ctx, v->var);
+    free(v);
+}
+
+
+void ui_listview_activate_event(
+        GtkTreeView *treeview,
+        GtkTreePath *path,
+        GtkTreeViewColumn *column,
+        UiTreeEventData *event)
+{
+    UiListSelection selection = ui_listview_selection(
+            gtk_tree_view_get_selection(treeview),
+            event);
+    
+    UiEvent e;
+    e.obj = event->obj;
+    e.window = event->obj->window;
+    e.document = event->obj->ctx->document;
+    e.eventdata = &selection;
+    e.intval = selection.count > 0 ? selection.rows[0] : -1;
+    event->activate(&e, event->activatedata);
+    
+    if(selection.count > 0) {
+        free(selection.rows);
+    }
+}
+
+void ui_listview_selection_event(
+        GtkTreeSelection *treeselection,
+        UiTreeEventData *event)
+{
+    UiListSelection selection = ui_listview_selection(treeselection, event);
+    
+    UiEvent e;
+    e.obj = event->obj;
+    e.window = event->obj->window;
+    e.document = event->obj->ctx->document;
+    e.eventdata = &selection;
+    e.intval = selection.count > 0 ? selection.rows[0] : -1;
+    event->selection(&e, event->selectiondata);
+    
+    if(selection.count > 0) {
+        free(selection.rows);
+    }
+}
+
+UiListSelection ui_listview_selection(
+        GtkTreeSelection *selection,
+        UiTreeEventData *event)
+{
+    GList *rows = gtk_tree_selection_get_selected_rows(selection, NULL);
+    
+    UiListSelection ls;
+    ls.count = g_list_length(rows);
+    ls.rows = calloc(ls.count, sizeof(int));
+    GList *r = rows;
+    int i = 0;
+    while(r) {
+        GtkTreePath *path = r->data;
+        ls.rows[i] = ui_tree_path_list_index(path);
+        r = r->next;
+        i++;
+    }
+    return ls;
+}
+
+int ui_tree_path_list_index(GtkTreePath *path) {
+    int depth = gtk_tree_path_get_depth(path);
+    if(depth == 0) {
+        fprintf(stderr, "UiError: treeview selection: depth == 0\n");
+        return -1;
+    }
+    int *indices = gtk_tree_path_get_indices(path);
+    return indices[depth - 1];
+}
+
+
+/* --------------------------- ComboBox ---------------------------  */
+
+UIWIDGET ui_combobox_create(UiObject *obj, UiListArgs args) {
+    UiObject* current = uic_current_obj(obj);
+    
+    UiModel *model = ui_model(obj->ctx, UI_STRING, "", -1);
+    model->getvalue = args.getvalue ? args.getvalue : ui_strmodel_getvalue;
+    
+    UiVar* var = uic_widget_var(obj->ctx, current->ctx, args.list, args.varname, UI_VAR_LIST);
+    
+    GtkWidget *combobox = ui_create_combobox(obj, model, var, args.onactivate, args.onactivatedata);
+    ui_set_name_and_style(combobox, args.name, args.style_class);
+    ui_set_widget_groups(obj->ctx, combobox, args.groups);
+    UI_APPLY_LAYOUT1(current, args);
+    current->container->add(current->container, combobox, FALSE);
+    current->container->current = combobox;
+    return combobox;
+}
+
+GtkWidget* ui_create_combobox(UiObject *obj, UiModel *model, UiVar *var, ui_callback f, void *udata) {
+    GtkWidget *combobox = gtk_combo_box_new();
+       
+    UiListView *uicbox = malloc(sizeof(UiListView));
+    uicbox->obj = obj;
+    uicbox->widget = combobox;
+    
+    UiList *list = var ? var->value : NULL;
+    GtkListStore *listmodel = create_list_store(list, model);
+    
+    if(listmodel) {
+        gtk_combo_box_set_model(GTK_COMBO_BOX(combobox), GTK_TREE_MODEL(listmodel));
+        g_object_unref(listmodel);
+    }
+    
+    uicbox->var = var;
+    uicbox->model = model;
+    
+    g_signal_connect(
+                combobox,
+                "destroy",
+                G_CALLBACK(ui_combobox_destroy),
+                uicbox);
+    
+    // bind var
+    if(list) {
+        list->update = ui_combobox_modelupdate;
+        list->getselection = ui_combobox_getselection;
+        list->setselection = ui_combobox_setselection;
+        list->obj = uicbox;
+    }
+    
+    GtkCellRenderer *renderer = gtk_cell_renderer_text_new();
+    gtk_cell_layout_pack_start(GTK_CELL_LAYOUT(combobox), renderer, TRUE);
+    gtk_cell_layout_set_attributes(
+            GTK_CELL_LAYOUT(combobox),
+            renderer,
+            "text",
+            0,
+            NULL);
+    gtk_combo_box_set_active(GTK_COMBO_BOX(combobox), 0);
+    
+    // add callback
+    if(f) {
+        UiEventData *event = ui_malloc(obj->ctx, sizeof(UiEventData));
+        event->obj = obj;
+        event->userdata = udata;
+        event->callback = f;
+        event->value = 0;
+        event->customdata = NULL;
+
+        g_signal_connect(
+                combobox,
+                "changed",
+                G_CALLBACK(ui_combobox_change_event),
+                event);
+    }
+    
+    return combobox;
+}
+
+void ui_combobox_change_event(GtkComboBox *widget, UiEventData *e) {
+    UiEvent event;
+    event.obj = e->obj;
+    event.window = event.obj->window;
+    event.document = event.obj->ctx->document;
+    event.eventdata = NULL;
+    event.intval = gtk_combo_box_get_active(widget);
+    e->callback(&event, e->userdata);
+}
+
+void ui_combobox_modelupdate(UiList *list, int i) {
+    UiListView *view = list->obj;
+    GtkListStore *store = create_list_store(view->var->value, view->model);
+    gtk_combo_box_set_model(GTK_COMBO_BOX(view->widget), GTK_TREE_MODEL(store));
+    g_object_unref(store);
+}
+
+UiListSelection ui_combobox_getselection(UiList *list) {
+    UiListView *combobox = list->obj;
+    UiListSelection ret;
+    ret.rows = malloc(sizeof(int*));
+    ret.count = 1;
+    ret.rows[0] = gtk_combo_box_get_active(GTK_COMBO_BOX(combobox->widget));
+    return ret;
+}
+
+void ui_combobox_setselection(UiList *list, UiListSelection selection) {
+    UiListView *combobox = list->obj;
+    if(selection.count > 0) {
+        gtk_combo_box_set_active(GTK_COMBO_BOX(combobox->widget), selection.rows[0]);
+    }
+}
+
+
+/* ------------------------------ Source List ------------------------------ */
+
+static void ui_destroy_sourcelist(GtkWidget *w, UiListBox *v) {
+    cxListDestroy(v->sublists);
+    free(v);
+}
+
+static void sublist_destroy(UiObject *obj, UiListBoxSubList *sublist) {
+    free(sublist->header);
+    ui_destroy_boundvar(obj->ctx, sublist->var);
+    cxListDestroy(sublist->widgets);
+}
+
+static void listbox_create_header(GtkListBoxRow* row, GtkListBoxRow* before, gpointer user_data) {
+    // first rows in sublists have the ui_listbox property
+    UiListBox *listbox = g_object_get_data(G_OBJECT(row), "ui_listbox");
+    if(!listbox) {
+        return;
+    }
+    
+    UiListBoxSubList *sublist = g_object_get_data(G_OBJECT(row), "ui_listbox_sublist");
+    if(!sublist) {
+        return;
+    }
+    
+    if(sublist->separator) {
+        GtkWidget *separator = gtk_separator_new(GTK_ORIENTATION_HORIZONTAL);
+        gtk_list_box_row_set_header(row, separator);
+    } else if(sublist->header) {
+        GtkWidget *header = gtk_label_new(sublist->header);
+        gtk_widget_set_halign(header, GTK_ALIGN_START);
+        if(row == listbox->first_row) {
+            WIDGET_ADD_CSS_CLASS(header, "ui-listbox-header-first");
+        } else {
+            WIDGET_ADD_CSS_CLASS(header, "ui-listbox-header");
+        }
+        gtk_list_box_row_set_header(row, header);
+    }
+} 
+
+#ifdef UI_GTK3
+typedef struct _UiSidebarListBoxClass {
+    GtkListBoxClass parent_class; 
+} UiSidebarListBoxClass;
+
+typedef struct _UiSidebarListBox {
+    GtkListBox parent_instance;
+} UiSidebarListBox;
+
+G_DEFINE_TYPE(UiSidebarListBox, ui_sidebar_list_box, GTK_TYPE_LIST_BOX)
+
+/* Initialize the instance */
+static void ui_sidebar_list_box_class_init(UiSidebarListBoxClass *klass) {
+    GtkWidgetClass *widget_class = GTK_WIDGET_CLASS(klass);
+    gtk_widget_class_set_css_name (widget_class, "placessidebar");
+}
+
+static void ui_sidebar_list_box_init(UiSidebarListBox *self) {
+    
+}
+#endif
+
+UIEXPORT UIWIDGET ui_sourcelist_create(UiObject *obj, UiSourceListArgs args) {
+    UiObject* current = uic_current_obj(obj);
+    
+#ifdef UI_GTK3
+    GtkWidget *listbox = g_object_new(ui_sidebar_list_box_get_type(), NULL);
+#else
+    GtkWidget *listbox = gtk_list_box_new();
+#endif
+    if(!args.style_class) {
+#if GTK_MAJOR_VERSION >= 4
+        WIDGET_ADD_CSS_CLASS(listbox, "navigation-sidebar");
+#else
+        WIDGET_ADD_CSS_CLASS(listbox, "sidebar");
+#endif
+    }
+    gtk_list_box_set_header_func(GTK_LIST_BOX(listbox), listbox_create_header, NULL, NULL);
+    GtkWidget *scroll_area = SCROLLEDWINDOW_NEW();
+    SCROLLEDWINDOW_SET_CHILD(scroll_area, listbox);
+    
+    ui_set_name_and_style(listbox, args.name, args.style_class);
+    ui_set_widget_groups(obj->ctx, listbox, args.groups);
+    UI_APPLY_LAYOUT1(current, args);
+    current->container->add(current->container, scroll_area, TRUE);
+    
+    UiListBox *uilistbox = malloc(sizeof(UiListBox));
+    uilistbox->obj = obj;
+    uilistbox->listbox = GTK_LIST_BOX(listbox);
+    uilistbox->getvalue = args.getvalue;
+    uilistbox->onactivate = args.onactivate;
+    uilistbox->onactivatedata = args.onactivatedata;
+    uilistbox->onbuttonclick = args.onbuttonclick;
+    uilistbox->onbuttonclickdata = args.onbuttonclickdata;
+    uilistbox->sublists = cxArrayListCreateSimple(sizeof(UiListBoxSubList), 4);
+    uilistbox->sublists->collection.advanced_destructor = (cx_destructor_func2)sublist_destroy;
+    uilistbox->sublists->collection.destructor_data = obj;
+    uilistbox->first_row = NULL;
+    
+    if(args.numsublists == 0 && args.sublists) {
+        args.numsublists = INT_MAX;
+    }
+    for(int i=0;i<args.numsublists;i++) {
+        UiSubList sublist = args.sublists[i];
+        if(!sublist.varname && !sublist.value) {
+            break;
+        }
+        
+        UiListBoxSubList uisublist;
+        uisublist.var = uic_widget_var(
+                obj->ctx,
+                current->ctx,
+                sublist.value,
+                sublist.varname,
+                UI_VAR_LIST);
+        uisublist.numitems = 0;
+        uisublist.header = sublist.header ? strdup(sublist.header) : NULL;
+        uisublist.separator = sublist.separator;
+        uisublist.widgets = cxLinkedListCreateSimple(CX_STORE_POINTERS);
+        uisublist.listbox = uilistbox;
+        uisublist.userdata = sublist.userdata;
+        uisublist.index = i;
+        
+        cxListAdd(uilistbox->sublists, &uisublist);
+        
+        // bind UiList
+        UiListBoxSubList *sublist_ptr = cxListAt(uilistbox->sublists, cxListSize(uilistbox->sublists)-1);
+        UiList *list = uisublist.var->value;
+        if(list) {
+            list->obj = sublist_ptr;
+            list->update = ui_listbox_list_update;
+        }
+    }
+    // fill items
+    ui_listbox_update(uilistbox, 0, cxListSize(uilistbox->sublists));
+    
+    // register uilistbox for both widgets, so it doesn't matter which
+    // widget is used later
+    g_object_set_data(G_OBJECT(scroll_area), "ui_listbox", uilistbox);
+    g_object_set_data(G_OBJECT(listbox), "ui_listbox", uilistbox);
+    
+    // signals
+    g_signal_connect(
+                listbox,
+                "destroy",
+                G_CALLBACK(ui_destroy_sourcelist),
+                uilistbox);
+    
+    if(args.onactivate) {
+        g_signal_connect(
+                listbox,
+                "row-activated",
+                G_CALLBACK(ui_listbox_row_activate),
+                NULL);
+    }
+    
+    return scroll_area;
+}
+
+void ui_listbox_update(UiListBox *listbox, int from, int to) {
+    CxIterator i = cxListIterator(listbox->sublists);
+    size_t pos = 0;
+    cx_foreach(UiListBoxSubList *, sublist, i) {
+        if(i.index < from) {
+            pos += sublist->numitems;
+            continue;
+        }
+        if(i.index > to) {
+            break;
+        }
+        
+        // reload sublist
+        ui_listbox_update_sublist(listbox, sublist, pos);
+        pos += sublist->numitems;
+    }
+}
+
+static GtkWidget* create_listbox_row(UiListBox *listbox, UiListBoxSubList *sublist, UiSubListItem *item, int index) {
+    GtkWidget *hbox = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 10);
+    if(item->icon) {
+        GtkWidget *icon = ICON_IMAGE(item->icon);
+        BOX_ADD(hbox, icon);
+    }
+    GtkWidget *label = gtk_label_new(item->label);
+    gtk_widget_set_halign(label, GTK_ALIGN_START);
+    BOX_ADD_EXPAND(hbox, label);
+    // TODO: badge, button
+    GtkWidget *row = gtk_list_box_row_new();
+    LISTBOX_ROW_SET_CHILD(row, hbox);
+    
+    // signals 
+    UiEventDataExt *event = malloc(sizeof(UiEventDataExt));
+    memset(event, 0, sizeof(UiEventDataExt));
+    event->obj = listbox->obj;
+    event->customdata0 = sublist;
+    event->customdata1 = sublist->var;
+    event->customdata2 = item->eventdata;
+    event->callback = listbox->onactivate;
+    event->userdata = listbox->onactivatedata;
+    event->callback2 = listbox->onbuttonclick;
+    event->userdata2 = listbox->onbuttonclickdata;
+    event->value0 = index;
+    
+    g_signal_connect(
+            row,
+            "destroy",
+            G_CALLBACK(ui_destroy_userdata),
+            event);
+    
+    g_object_set_data(G_OBJECT(row), "ui-listbox-row-eventdata", event);
+    
+    return row;
+}
+
+void ui_listbox_update_sublist(UiListBox *listbox, UiListBoxSubList *sublist, size_t listbox_insert_index) {
+    // clear sublist
+    CxIterator r = cxListIterator(sublist->widgets);
+    cx_foreach(GtkWidget*, widget, r) {
+        LISTBOX_REMOVE(listbox->listbox, widget);
+    }
+    cxListClear(sublist->widgets);
+    
+    sublist->numitems = 0;
+    
+    // create items for each UiList element
+    UiList *list = sublist->var->value;
+    if(!list) {
+        return;
+    }
+    
+    size_t index = 0;
+    void *elm = list->first(list);
+    while(elm) {
+        UiSubListItem item = { NULL, NULL, NULL, NULL, NULL, NULL };
+        listbox->getvalue(sublist->userdata, elm, index, &item);
+        
+        // create listbox item
+        GtkWidget *row = create_listbox_row(listbox, sublist, &item, (int)index);
+        if(index == 0) {
+            // first row in the sublist, set ui_listbox data to the row
+            // which is then used by the headerfunc
+            g_object_set_data(G_OBJECT(row), "ui_listbox", listbox);
+            g_object_set_data(G_OBJECT(row), "ui_listbox_sublist", sublist);
+            
+            if(listbox_insert_index == 0) {
+                // first row in the GtkListBox
+                listbox->first_row = GTK_LIST_BOX_ROW(row);
+            }
+        }
+        intptr_t rowindex = listbox_insert_index + index;
+        g_object_set_data(G_OBJECT(row), "ui_listbox_row_index", (gpointer)rowindex);
+        gtk_list_box_insert(listbox->listbox, row, listbox_insert_index + index);
+        cxListAdd(sublist->widgets, row);
+        
+        // cleanup
+        free(item.label);
+        free(item.icon);
+        free(item.button_label);
+        free(item.button_icon);
+        free(item.badge);
+        
+        // next row
+        elm = list->next(list);
+        index++;
+    }
+    
+    sublist->numitems = cxListSize(sublist->widgets);
+}
+
+void ui_listbox_list_update(UiList *list, int i) {
+    UiListBoxSubList *sublist = list->obj;
+}
+
+void ui_listbox_row_activate(GtkListBox *self, GtkListBoxRow *row, gpointer user_data) {
+    UiEventDataExt *data = g_object_get_data(G_OBJECT(row), "ui-listbox-row-eventdata");
+    if(!data) {
+        return;
+    }
+    UiListBoxSubList *sublist = data->customdata0;
+    
+    UiEvent event;
+    event.obj = data->obj;
+    event.window = event.obj->window;
+    event.document = event.obj->ctx->document;
+    event.eventdata = data->customdata2;
+    event.intval = data->value0;
+    
+    if(data->callback) {
+        data->callback(&event, data->userdata);
+    }
+}

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