diff -r 000000000000 -r 804d8803eade ui/cocoa/tree.m
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ui/cocoa/tree.m	Wed Dec 09 11:32:01 2020 +0100
@@ -0,0 +1,246 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2012 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.
+ */
+ 
+#import <stdio.h>
+#import <stdlib.h>
+ 
+#import "tree.h"
+#import "container.h"
+#import "window.h"
+#import "../common/context.h"
+#import <ucx/utils.h>
+
+@implementation UiTableDataSource
+
+- (id)initWithData:(UiList*)list modelInfo:(UiModelInfo*)modelinfo {
+    data = list;
+    info = modelinfo;
+    lastSelection = NULL;
+    return self;
+}
+
+- (NSInteger)numberOfRowsInTableView:(NSTableView *)tableview {
+    return data->count(data);
+}
+
+- (id)tableView:                  (NSTableView*)tableview
+        objectValueForTableColumn:(NSTableColumn*)column
+                              row:(NSInteger)row
+{
+    int column_index = [[column identifier]intValue];
+    
+    void *row_data = data->get(data, row);
+    void *cell_data = info->getvalue(row_data, column_index);
+    
+    BOOL f = false;
+    char *str = ui_type_to_string(info->types[column_index], cell_data, &f);
+    NSString *s = [[NSString alloc]initWithUTF8String:str];
+    return s;
+}
+
+- (void)tableView:(NSTableView *)tableview
+        setObjectValue:(id)object
+        forTableColumn:(NSTableColumn *)column
+                   row:(NSInteger)row
+{
+    int column_index = [[column identifier]intValue];
+    
+    // TODO
+}
+
+- (void)tableViewSelectionDidChange:(NSNotification *)notification {
+    NSTableView *tableview = (NSTableView*)notification.object;
+    
+    // create selection object
+    UiListSelection *selection = malloc(sizeof(UiListSelection));
+    selection->count = [tableview numberOfSelectedRows];
+    
+    selection->rows = calloc(selection->count, sizeof(int));
+    NSIndexSet *indices = [tableview selectedRowIndexes];
+    NSUInteger index = [indices firstIndex];
+    int i=0;
+    while (index!=NSNotFound) {
+        selection->rows[i] = index;
+        index = [indices indexGreaterThanIndex:index];
+        i++;
+    }
+    
+    // create event object
+    UiEvent event;
+    NSWindow *activeWindow = [NSApp keyWindow];
+    if([activeWindow class] == [UiCocoaWindow class]) {
+        event.obj = [(UiCocoaWindow*)activeWindow object];
+        event.window = event.obj->window;
+        event.document = event.obj->ctx->document;
+    } else {
+        event.window = NULL;
+        event.document = NULL;
+    }
+    event.eventdata = selection;
+    event.intval = selection->count == 0 ? -1 : selection->rows[0];
+    
+    // callback
+    info->selection(&event, info->userdata);
+    
+    // cleanup
+    if(lastSelection) {
+        free(lastSelection->rows);
+        free(lastSelection);
+    }
+    lastSelection = selection;
+}
+
+- (void)handleDoubleAction:(id)sender {
+    // create event object
+    UiEvent event;
+    NSWindow *activeWindow = [NSApp keyWindow];
+    if([activeWindow class] == [UiCocoaWindow class]) {
+        event.obj = [(UiCocoaWindow*)activeWindow object];
+        event.window = event.obj->window;
+        event.document = event.obj->ctx->document;
+    } else {
+        event.window = NULL;
+        event.document = NULL;
+    }
+    event.eventdata = lastSelection;
+    event.intval = lastSelection->count == 0 ? -1 : lastSelection->rows[0];
+    
+    info->activate(&event, info->userdata);
+}
+
+- (BOOL)tableView:(NSTableView *)tableview isGroupRow:(NSInteger)row {
+    return NO;
+}
+
+@end
+
+
+UIWIDGET ui_table(UiObject *obj, UiList *model, UiModelInfo *modelinfo) {
+    UiContainer *ct = uic_get_current_container(obj);
+    NSRect frame = ct->getframe(ct);
+    
+    NSScrollView *scrollview = [[NSScrollView alloc] initWithFrame:frame];
+    [scrollview setHasVerticalScroller:YES];
+    //[scrollvew setHasHorizontalScroller:YES];
+    [scrollview setBorderType:NSNoBorder];
+    //[scrollview setAutoresizingMask:NSViewWidthSizable|NSViewHeightSizable];
+    
+    NSTableView *tableview = [[NSTableView alloc]initWithFrame:frame];
+    [scrollview setDocumentView:tableview];
+    [tableview setAllowsMultipleSelection: YES];
+    //[tableview setSelectionHighlightStyle:NSTableViewSelectionHighlightStyleSourceList];
+    
+    // add columns
+    for(int i=0;i<modelinfo->columns;i++) {
+        NSString *cid = [[NSString alloc]initWithFormat: @"%d", i];
+        NSTableColumn *column = [[NSTableColumn alloc]initWithIdentifier:cid];
+        
+        NSString *title = [[NSString alloc]initWithUTF8String: modelinfo->titles[i]];
+        [[column headerCell] setStringValue:title];
+        
+        [tableview addTableColumn:column];
+    }
+    
+    UiTableDataSource *source = [[UiTableDataSource alloc]initWithData:model modelInfo:modelinfo];
+    [tableview setDataSource:source];
+    [tableview setDelegate:source];
+
+    [tableview setDoubleAction:@selector(handleDoubleAction:)];
+    [tableview setTarget:source];
+    
+    
+    ct->add(ct, scrollview);
+    return scrollview;
+}
+
+
+UIWIDGET ui_listview_var(UiObject *obj, UiListPtr *list, ui_model_getvalue_f getvalue, ui_callback f, void *udata) {
+    UiContainer *ct = uic_get_current_container(obj);
+    NSRect frame = ct->getframe(ct);
+    
+    NSScrollView *scrollview = [[NSScrollView alloc] initWithFrame:frame];
+    [scrollview setHasVerticalScroller:YES];
+    
+    [scrollview setBorderType:NSNoBorder];
+    
+    NSTableView *tableview = [[NSTableView alloc]initWithFrame:frame];
+    [scrollview setDocumentView:tableview];
+    [tableview setAllowsMultipleSelection: NO];
+    
+    // add single column
+    NSTableColumn *column = [[NSTableColumn alloc]initWithIdentifier:@"c"];
+    [tableview addTableColumn:column];
+    
+    // create model info
+    UiModelInfo *modelinfo = ui_model_info(obj->ctx, UI_STRING, -1);
+    
+    // add source
+    UiTableDataSource *source = [[UiTableDataSource alloc]initWithData:list->list modelInfo:modelinfo];
+    
+    [tableview setDataSource:source];
+    [tableview setDelegate:source];
+
+    [tableview setDoubleAction:@selector(handleDoubleAction:)];
+    [tableview setTarget:source];
+    
+    ct->add(ct, scrollview);
+    return scrollview;
+}
+
+UIWIDGET ui_listview(UiObject *obj, UiList *list, ui_model_getvalue_f getvalue, ui_callback f, void *udata) {
+    UiListPtr *listptr = ucx_mempool_malloc(obj->ctx->mempool, sizeof(UiListPtr));
+    listptr->list = list;
+    return ui_listview_var(obj, listptr, getvalue, f, udata);
+}
+
+UIWIDGET ui_listview_nv(UiObject *obj, char *varname, ui_model_getvalue_f getvalue, ui_callback f, void *udata) {
+    UiVar *var = uic_connect_var(obj->ctx, varname, UI_VAR_LIST);
+    if(var) {
+        UiListVar *value = var->value;
+        return ui_listview_var(obj, value->listptr, getvalue, f, udata);
+    } else {
+        // TODO: error
+    }
+    return NULL;
+}
+
+
+// TODO: motif code duplicate
+char* ui_type_to_string(UiModelType type, void *data, BOOL *free) {
+    switch(type) {
+        case UI_STRING: *free = FALSE; return data;
+        case UI_INTEGER: {
+            *free = TRUE;
+            int *val = data;
+            sstr_t str = ucx_asprintf(ucx_default_allocator(), "%d", *val);
+            return str.ptr;
+        }
+    }
+    *free = FALSE;
+    return NULL;
+}