diff -r 000000000000 -r 804d8803eade ui/motif/menu.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ui/motif/menu.c	Wed Dec 09 11:32:01 2020 +0100
@@ -0,0 +1,626 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2014 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 <stdarg.h>
+
+#include "menu.h"
+#include "button.h"
+#include "toolkit.h"
+#include "stock.h"
+#include "container.h"
+#include "../common/context.h"
+#include "../ui/window.h"
+
+UcxList *menus;
+UcxList *current;
+
+void ui_menu(char *label) {
+    // free current menu hierarchy
+    ucx_list_free(current);
+    
+    // create menu
+    UiMenu *menu = malloc(sizeof(UiMenu));
+    menu->item.add_to = (ui_menu_add_f)add_menu_widget;
+    
+    menu->label  = label;
+    menu->items  = NULL;
+    menu->parent = NULL;    
+    
+    current = ucx_list_prepend(NULL, menu);
+    menus = ucx_list_append(menus, menu);
+    
+}
+
+void ui_submenu(char *label) {
+    UiMenu *menu = malloc(sizeof(UiMenu));
+    menu->item.add_to = (ui_menu_add_f)add_menu_widget;
+    
+    menu->label  = label;
+    menu->items  = NULL;
+    menu->parent = NULL;
+    
+    // add submenu to current menu
+    UiMenu *cm = current->data;
+    cm->items = ucx_list_append(cm->items, menu);
+    
+    // set the submenu to current menu
+    current = ucx_list_prepend(current, menu);
+}
+
+void ui_submenu_end() {
+    if(ucx_list_size(current) < 2) {
+        return;
+    }
+    current = ucx_list_remove(current, current);
+}
+
+void ui_menuitem(char *label, ui_callback f, void *userdata) {
+    ui_menuitem_gr(label, f, userdata, -1);
+}
+
+void ui_menuitem_st(char *stockid, ui_callback f, void *userdata) {
+    ui_menuitem_stgr(stockid, f, userdata, -1);
+}
+
+void ui_menuitem_gr(char *label, ui_callback f, void *userdata, ...) {
+    if(!current) {
+        return;
+    }
+    
+    UiMenuItem *item = malloc(sizeof(UiMenuItem));
+    item->item.add_to = (ui_menu_add_f)add_menuitem_widget;
+    
+    item->label = label;
+    item->userdata = userdata;
+    item->callback = f;
+    item->groups = NULL;
+    
+    // add groups
+    va_list ap;
+    va_start(ap, userdata);
+    int group;
+    while((group = va_arg(ap, int)) != -1) {
+        item->groups = ucx_list_append(item->groups, (void*)(intptr_t)group);
+    }
+    va_end(ap);
+    
+    UiMenu *cm = current->data;
+    cm->items = ucx_list_append(cm->items, item);
+}
+
+void ui_menuitem_stgr(char *stockid, ui_callback f, void *userdata, ...) {
+    if(!current) {
+        return;
+    }
+    
+    UiStMenuItem *item = malloc(sizeof(UiStMenuItem));
+    item->item.add_to = (ui_menu_add_f)add_menuitem_st_widget;
+    
+    item->stockid = stockid;
+    item->userdata = userdata;
+    item->callback = f;
+    item->groups = NULL;
+    
+    // add groups
+    va_list ap;
+    va_start(ap, userdata);
+    int group;
+    while((group = va_arg(ap, int)) != -1) {
+        item->groups = ucx_list_append(item->groups, (void*)(intptr_t)group);
+    }
+    va_end(ap);
+    
+    UiMenu *cm = current->data;
+    cm->items = ucx_list_append(cm->items, item);
+}
+
+void ui_menuseparator() {
+    if(!current) {
+        return;
+    }
+    
+    UiMenuItemI *item = malloc(sizeof(UiMenuItemI));
+    item->add_to = (ui_menu_add_f)add_menuseparator_widget;
+    
+    UiMenu *cm = current->data;
+    cm->items = ucx_list_append(cm->items, item);
+}
+
+
+void ui_checkitem(char *label, ui_callback f, void *userdata) {
+    if(!current) {
+        return;
+    }
+    
+    UiCheckItem *item = malloc(sizeof(UiCheckItem));
+    item->item.add_to = (ui_menu_add_f)add_checkitem_widget;
+    item->label = label;
+    item->callback = f;
+    item->userdata = userdata;
+    
+    UiMenu *cm = current->data;
+    cm->items = ucx_list_append(cm->items, item);
+}
+
+void ui_checkitem_nv(char *label, char *vname) {
+    if(!current) {
+        return;
+    }
+    
+    UiCheckItemNV *item = malloc(sizeof(UiCheckItemNV));
+    item->item.add_to = (ui_menu_add_f)add_checkitemnv_widget;
+    item->varname = vname;
+    item->label = label;
+    
+    UiMenu *cm = current->data;
+    cm->items = ucx_list_append(cm->items, item);
+}
+
+void ui_menuitem_list(UiList *items, ui_callback f, void *userdata) {
+    if(!current) {
+        return;
+    }
+    
+    UiMenuItemList *item = malloc(sizeof(UiMenuItemList));
+    item->item.add_to = (ui_menu_add_f)add_menuitem_list_widget;
+    item->callback = f;
+    item->userdata = userdata;
+    item->list = items;
+    
+    UiMenu *cm = current->data;
+    cm->items = ucx_list_append(cm->items, item);
+}
+
+
+// private menu functions
+void ui_create_menubar(UiObject *obj) {
+    if(!menus) {
+        return;
+    }
+    
+    Widget menubar = XmCreateMenuBar(obj->widget, "main_list", NULL, 0);
+    XtManageChild(menubar);
+    
+    UcxList *ls = menus;
+    int menu_index = 0;
+    while(ls) {
+        UiMenu *menu = ls->data;
+        menu_index += menu->item.add_to(menubar, menu_index, &menu->item, obj);
+        
+        ls = ls->next;
+    }
+}
+
+int add_menu_widget(Widget parent, int i, UiMenuItemI *item, UiObject *obj) {
+    UiMenu *menu = (UiMenu*)item;
+    
+    Widget menuItem = XtVaCreateManagedWidget(
+            menu->label,
+            xmCascadeButtonWidgetClass,
+            parent,
+            NULL);
+    Widget m = XmVaCreateSimplePulldownMenu(parent, menu->label, i, NULL, NULL);
+    
+    UcxList *ls = menu->items;
+    int menu_index = 0;
+    while(ls) {
+        UiMenuItemI *mi = ls->data;
+        menu_index += mi->add_to(m, menu_index, mi, obj);
+        ls = ls->next;
+    }
+    
+    return 1;
+}
+
+int add_menuitem_widget(
+        Widget parent,
+        int i,
+        UiMenuItemI *item,
+        UiObject *obj)
+{
+    UiMenuItem *mi = (UiMenuItem*)item;
+    
+    Arg args[1];
+    XmString label = XmStringCreateLocalized(mi->label);
+    XtSetArg(args[0], XmNlabelString, label);
+    
+    Widget mitem = XtCreateManagedWidget(
+            "menubutton",
+            xmPushButtonWidgetClass,
+            parent,
+            args,
+            1);
+    XmStringFree(label);
+    
+    if(mi->callback != NULL) {
+        UiEventData *event = ucx_mempool_malloc(
+                obj->ctx->mempool,
+                sizeof(UiEventData));
+        event->obj = obj;
+        event->userdata = mi->userdata;
+        event->callback = mi->callback;
+        event->value = 0;
+        XtAddCallback(
+                mitem,
+                XmNactivateCallback,
+                (XtCallbackProc)ui_push_button_callback,
+                event);
+    }
+    
+    if(mi->groups) {
+        uic_add_group_widget(obj->ctx, mitem, mi->groups);
+    }
+    
+    return 1;
+}
+
+int add_menuitem_st_widget(Widget parent, int i, UiMenuItemI *item, UiObject *obj) {
+    UiStMenuItem *mi = (UiStMenuItem*)item;
+    
+    UiStockItem *si = ui_get_stock_item(mi->stockid);
+    if(!si) {
+        fprintf(stderr, "UI Error: unknown stock id: %s\n", mi->stockid);
+        return 0;
+    }
+    
+    int n = 0;
+    Arg args[4];
+    XmString label = XmStringCreateLocalized(si->label);
+    XmString at = NULL;
+    
+    XtSetArg(args[n], XmNlabelString, label);
+    n++;
+    if(si->accelerator) {
+        XtSetArg(args[n], XmNaccelerator, si->accelerator);
+        n++;
+    }
+    if(si->accelerator_label) {
+        at = XmStringCreateLocalized(si->accelerator_label);
+        XtSetArg(args[n], XmNacceleratorText, at);
+        n++;
+    }
+    
+    Widget mitem = XtCreateManagedWidget(
+            "menubutton",
+            xmPushButtonWidgetClass,
+            parent,
+            args,
+            n);
+    XmStringFree(label);
+    if(at) {
+        XmStringFree(at);
+    }
+    
+    if(mi->callback != NULL) {
+        UiEventData *event = ucx_mempool_malloc(
+                obj->ctx->mempool,
+                sizeof(UiEventData));
+        event->obj = obj;
+        event->userdata = mi->userdata;
+        event->callback = mi->callback;
+        event->value = 0;
+        XtAddCallback(
+                mitem,
+                XmNactivateCallback,
+                (XtCallbackProc)ui_push_button_callback,
+                event);
+    }
+    
+    if(mi->groups) {
+        uic_add_group_widget(obj->ctx, mitem, mi->groups);
+    }
+    
+    return 1;
+}
+
+int add_menuseparator_widget(
+        Widget parent,
+        int i,
+        UiMenuItemI *item,
+        UiObject *obj)
+{
+    Widget s = XmCreateSeparatorGadget (parent, "menu_separator", NULL, 0);
+    XtManageChild(s);
+    return 1;
+}
+
+int add_checkitem_widget(
+        Widget parent,
+        int i,
+        UiMenuItemI *item,
+        UiObject *obj)
+{
+    UiCheckItem *ci = (UiCheckItem*)item;
+    
+    Arg args[3];
+    XmString label = XmStringCreateLocalized(ci->label);
+    XtSetArg(args[0], XmNlabelString, label);
+    XtSetArg(args[1], XmNvisibleWhenOff, 1);
+    Widget checkbox = XtCreateManagedWidget(
+            "menutogglebutton",
+            xmToggleButtonWidgetClass,
+            parent,
+            args,
+            2);
+    XmStringFree(label);
+    
+    if(ci->callback) {
+        UiEventData *event = ucx_mempool_malloc(
+                obj->ctx->mempool,
+                sizeof(UiEventData));
+        event->obj = obj;
+        event->userdata = ci->userdata;
+        event->callback = ci->callback;
+        XtAddCallback(
+            checkbox,
+            XmNvalueChangedCallback,
+            (XtCallbackProc)ui_toggle_button_callback,
+            event);
+    }
+    
+    return 1;
+}
+
+int add_checkitemnv_widget(
+        Widget parent,
+        int i,
+        UiMenuItemI *item,
+        UiObject *obj)
+{
+    UiCheckItemNV *ci = (UiCheckItemNV*)item;
+    
+    Arg args[3];
+    XmString label = XmStringCreateLocalized(ci->label);
+    XtSetArg(args[0], XmNlabelString, label);
+    XtSetArg(args[1], XmNvisibleWhenOff, 1);
+    Widget checkbox = XtCreateManagedWidget(
+            "menutogglebutton",
+            xmToggleButtonWidgetClass,
+            parent,
+            args,
+            2);
+    XmStringFree(label);
+    
+    UiVar *var = uic_create_var(obj->ctx, ci->varname, UI_VAR_INTEGER);
+    if(var) {
+        UiInteger *value = var->value;
+        value->obj = checkbox;
+        value->get = ui_toggle_button_get;
+        value->set = ui_toggle_button_set;
+        value = 0;
+    } else {
+        // TODO: error
+    }
+    
+    return 1;
+}
+
+int add_menuitem_list_widget(
+        Widget parent,
+        int i,
+        UiMenuItemI *item,
+        UiObject *obj)
+{
+    UiMenuItemList *il = (UiMenuItemList*)item;
+    UcxMempool *mp = obj->ctx->mempool;
+    
+    UiActiveMenuItemList *ls = ucx_mempool_malloc(
+            mp,
+            sizeof(UiActiveMenuItemList));
+    
+    ls->object = obj;
+    ls->menu = parent;
+    ls->index = i;
+    ls->oldcount = 0;
+    ls->list = il->list;
+    ls->callback = il->callback;
+    ls->userdata = il->userdata;
+    
+    ls->list->observers = ui_add_observer(
+            ls->list->observers,
+            (ui_callback)ui_update_menuitem_list,
+            ls);
+    
+    ui_update_menuitem_list(NULL, ls);
+    
+    return 0;
+}
+
+void ui_update_menuitem_list(UiEvent *event, UiActiveMenuItemList *list) {
+    Arg args[4];
+    
+    // remove old items
+    if(list->oldcount > 0) {
+        Widget *children;
+        int nc;
+        
+        XtVaGetValues(
+                list->menu,
+                XmNchildren,
+                &children,
+                XmNnumChildren,
+                &nc,
+                NULL);
+        
+        for(int i=0;i<list->oldcount;i++) {
+            XtDestroyWidget(children[list->index + i]);
+        }
+    }
+    
+    char *str = ui_list_first(list->list);
+    if(str) {
+        // add separator
+        XtSetArg(args[0], XmNpositionIndex, list->index);
+        Widget s = XmCreateSeparatorGadget (list->menu, "menu_separator", args, 1);
+        XtManageChild(s);
+    }
+    int i = 1;
+    while(str) {
+        XmString label = XmStringCreateLocalized(str);
+        XtSetArg(args[0], XmNlabelString, label);
+        XtSetArg(args[1], XmNpositionIndex, list->index + i);
+
+        Widget mitem = XtCreateManagedWidget(
+                "menubutton",
+                xmPushButtonWidgetClass,
+                list->menu,
+                args,
+                2);
+        XmStringFree(label);
+        
+        if(list->callback) {
+            // TODO: use mempool
+            UiEventData *event = malloc(sizeof(UiEventData));
+            event->obj = list->object;
+            event->userdata = list->userdata;
+            event->callback = list->callback;
+            event->value = i - 1;
+
+            XtAddCallback(
+                mitem,
+                XmNactivateCallback,
+                (XtCallbackProc)ui_push_button_callback,
+                event);
+        }
+        
+        str = ui_list_next(list->list);
+        i++;
+    }
+    
+    list->oldcount = i;
+}
+
+void ui_menu_event_wrapper(Widget widget, XtPointer udata, XtPointer cdata) {
+    UiEventData *event = udata;
+    UiEvent e;
+    e.obj = event->obj;
+    e.window = event->obj->window;
+    e.document = event->obj->ctx->document;
+    e.intval = 0;
+    event->callback(&e, event->userdata);    
+}
+
+
+/*
+ * widget menu functions
+ */
+
+static void ui_popup_handler(Widget widget, XtPointer data,  XEvent *event, Boolean *c) {
+    Widget menu = data;
+    XmMenuPosition(menu, (XButtonPressedEvent *)event);
+    XtManageChild(menu);
+    
+    *c = FALSE;
+}
+
+UIMENU ui_contextmenu(UiObject *obj) {
+    UiContainer *ct = uic_get_current_container(obj);
+    if(ct->current) {
+        return ui_contextmenu_w(obj, ct->current);
+    } else {
+        return NULL; // TODO: warn
+    }
+}
+
+UIMENU ui_contextmenu_w(UiObject *obj, UIWIDGET widget) {
+    UiContainer *ct = uic_get_current_container(obj);
+    
+    Widget menu = XmCreatePopupMenu(widget, "popup_menu", NULL, 0);
+    ct->menu = menu;
+    
+    XtAddEventHandler(widget, ButtonPressMask, FALSE, ui_popup_handler, menu);
+    
+    return menu;
+}
+
+void ui_contextmenu_popup(UIMENU menu) {
+    
+}
+
+void ui_widget_menuitem(UiObject *obj, char *label, ui_callback f, void *userdata) {
+    ui_widget_menuitem_gr(obj, label, f, userdata, -1);
+}
+
+void ui_widget_menuitem_gr(UiObject *obj, char *label, ui_callback f, void *userdata, ...) {
+    UiContainer *ct = uic_get_current_container(obj);
+    if(!ct->menu) {
+        return;
+    }
+    
+    // add groups
+    UcxList *groups = NULL;
+    va_list ap;
+    va_start(ap, userdata);
+    int group;
+    while((group = va_arg(ap, int)) != -1) {
+        ucx_list_append(groups, (void*)(intptr_t)group);
+    }
+    va_end(ap);
+    
+    // create menuitem
+    Arg args[4];
+    XmString labelstr = XmStringCreateLocalized(label);
+    XtSetArg(args[0], XmNlabelString, labelstr);
+    
+    Widget item = XmCreatePushButton(ct->menu, "menu_button", args, 1);
+    XtManageChild(item);
+    XmStringFree(labelstr);
+}
+
+void ui_widget_menuitem_st(UiObject *obj, char *stockid, ui_callback f, void *userdata) {
+    ui_widget_menuitem_stgr(obj, stockid, f, userdata, -1);
+}
+
+void ui_widget_menuitem_stgr(UiObject *obj, char *stockid, ui_callback f, void *userdata, ...) {
+    UiContainer *ct = uic_get_current_container(obj);
+    if(!ct->menu) {
+        return;
+    }
+    
+    // add groups
+    UcxList *groups = NULL;
+    va_list ap;
+    va_start(ap, userdata);
+    int group;
+    while((group = va_arg(ap, int)) != -1) {
+        ucx_list_append(groups, (void*)(intptr_t)group);
+    }
+    va_end(ap);
+    
+    // create menuitem
+    UiStockItem *stockItem = ui_get_stock_item(stockid);
+    Arg args[4];
+    XmString labelstr = XmStringCreateLocalized(stockItem->label);
+    XtSetArg(args[0], XmNlabelString, labelstr);
+    
+    Widget item = XmCreatePushButton(ct->menu, "menu_button", args, 1);
+    XtManageChild(item);
+    XmStringFree(labelstr);
+}