application/window.c

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2024 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 "window.h"

#include "davcontroller.h"
#include "appsettings.h"
#include "xml.h"

#include <ui/stock.h>
#include <ui/dnd.h>

#include <libidav/utils.h>

#include <cx/printf.h>

static UiIcon* folder_icon;
static UiIcon* file_icon;

static UiPathElm* dav_get_pathelm(const char *full_path, size_t len, size_t *ret_nelm, void* data);

static UiMenuBuilder *contextmenu;

void window_init(void) {
    folder_icon = ui_foldericon(16);
    file_icon = ui_fileicon(16);
    
    // initialize the browser context menu
    ui_contextmenu(&contextmenu) {
        ui_menuitem(.label = "New Folder", .onclick = action_mkcol, .groups = UI_GROUPS(APP_STATE_BROWSER_SESSION));
        ui_menuitem(.label = "New File", .onclick = action_newfile, .groups = UI_GROUPS(APP_STATE_BROWSER_SESSION));
        ui_menuseparator();
        //ui_menuitem(.label = "Cut", .groups = UI_GROUPS(APP_STATE_BROWSER_SESSION, APP_STATE_BROWSER_SELECTION));
        //ui_menuitem(.label = "Copy", .groups = UI_GROUPS(APP_STATE_BROWSER_SESSION, APP_STATE_BROWSER_SELECTION));
        //ui_menuitem(.label = "Paste", .groups = UI_GROUPS(APP_STATE_BROWSER_SESSION, APP_STATE_BROWSER_SELECTION));
        ui_menuitem(.label = "Download", .onclick = action_download, .groups = UI_GROUPS(APP_STATE_BROWSER_SESSION, APP_STATE_BROWSER_SELECTION));
        ui_menuitem(.label = "Delete", .onclick = action_delete, .groups = UI_GROUPS(APP_STATE_BROWSER_SESSION));
        ui_menuitem(.label = "Select All", .onclick = action_selectall, .groups = UI_GROUPS(APP_STATE_BROWSER_SESSION));
        ui_menuseparator();
        ui_menuitem(.label = "Rename", .onclick = action_rename, .groups = UI_GROUPS(APP_STATE_BROWSER_SESSION, APP_STATE_BROWSER_SELECTION));
        ui_menuseparator();
        ui_menuitem("Open Properties", .onclick = action_open_properties, .groups = UI_GROUPS(APP_STATE_BROWSER_SESSION, APP_STATE_BROWSER_SELECTION));
        ui_menuitem("Open as Text File", .onclick = action_open_properties, .onclickdata = "text/plain", .groups = UI_GROUPS(APP_STATE_BROWSER_SESSION, APP_STATE_BROWSER_SELECTION));
    }
}

UiObject* window_create(void) {
    UiObject* obj = ui_window("iDAV", NULL);
    ui_window_size(obj, 900, 700);

    MainWindow* wdata = ui_malloc(obj->ctx, sizeof (MainWindow));
    memset(wdata, 0, sizeof (MainWindow));
    obj->window = wdata;

    wdata->progress = ui_int_new(obj->ctx, "progress");

    // navigation bar

    ui_hbox(obj, .margin = 8, .spacing = 8) {
        ui_hbox(obj, .style_class="linked") {
            ui_button(obj, .icon = UI_ICON_GO_BACK, .onclick = action_go_back);
            ui_button(obj, .icon = UI_ICON_GO_FORWARD, .onclick = action_go_forward);
        }

        ui_path_textfield(obj, .fill = TRUE, .getpathelm = dav_get_pathelm, .onactivate = action_path_selected, .varname = "path");
        ui_progressspinner(obj, .value = wdata->progress);
    }

    // main content
    UiModel* model = ui_model(obj->ctx, UI_ICON_TEXT, "Name", UI_STRING_FREE, "Flags", UI_STRING, "Type", UI_STRING_FREE, "Last Modified", UI_STRING_FREE, "Size", -1);
    model->columnsize[0] = -1;
    model->columnsize[2] = 150;
    ui_table(obj,
            .fill = TRUE,
            .model = model,
            .getvalue = (ui_getvaluefunc) window_resource_table_getvalue,
            .onselection = action_list_selection,
            .onactivate = action_list_activate,
            .ondragstart = action_dnd_start,
            .ondragcomplete = action_dnd_end,
            .ondrop = action_dnd_drop,
            .varname = "reslist",
            .multiselection = TRUE,
            .contextmenu = contextmenu);

    // status bar

    ui_hbox0(obj) {
        ui_label(obj, .label = "");
    }

    return obj;
}

void* window_resource_table_getvalue(DavResource *res, int col) {
    switch (col) {
        case 0: { // icon
            return res->iscollection ? folder_icon : file_icon;
        }
        case 1: { // resource name
            return res->name;
        }
        case 2: { // flags
            char *keyprop = dav_get_string_property_ns(
                    res,
                    DAV_NS,
                    "crypto-key");
            DavXmlNode *lockdiscovery = dav_get_property(res, "D:lockdiscovery");
            char *executable = dav_get_string_property_ns(
                    res,
                    "http://apache.org/dav/props/",
                    "executable");
            cxmutstr flags = cx_asprintf("%s%s%s",
                    appsettings_get_cryptoflag(keyprop ? 1 : 0),
                    appsettings_get_lockflag(lockdiscovery ? 1 : 0),
                    appsettings_get_execflag(executable ? 1 : 0));
            return flags.ptr;
        }
        case 3: { // type
            return res->iscollection ? "Collection" : (res->contenttype ? res->contenttype : "Resource");
        }
        case 4: { // last modified
            return util_date_str(res->lastmodified);
        }
        case 5: { // size
            return util_size_str(res->iscollection, res->contentlength);
        }
    }
    return NULL;
}

void window_progress(MainWindow *win, int on) {
    ui_set(win->progress, on);
}

void action_dnd_start(UiEvent *event, void *data) {
    //ui_selection_settext(event->eventdata, "hello world", -1);
    char *uri = "file:///export/home/olaf/test.txt";
    ui_selection_seturis(event->eventdata, &uri, 1);
}

void action_dnd_end(UiEvent *event, void *data) {
    
}


static void resourceviewer_close(UiEvent *event, void *data) {
    DavResourceViewer *doc = data;
    doc->window_closed = TRUE;
    if(doc->loaded) {
        dav_resourceviewer_destroy(doc);
    }

    if (doc->tmp_file) {
        unlink(doc->tmp_file);
        free(doc->tmp_file);
    }
}

void resourceviewer_new(DavBrowser *browser, const char *path, DavResourceViewType type) {
    const char *name = util_resource_name(path);
    UiObject *win = ui_simple_window(name, NULL);
    ui_window_size(win, 600, 600);
    
    ui_headerbar(win, .showtitle = TRUE) {
        ui_headerbar_start(win) {
            ui_button(win, .label = "Save", .onclick = action_resourceviewer_save, .groups = UI_GROUPS(RESOURCEVIEWER_STATE_MODIFIED));
        }
    }
    
    DavResourceViewer *doc = dav_resourceviewer_create(win, browser->sn, path, type);
    ui_attach_document(win->ctx, doc);
    ui_context_closefunc(win->ctx, resourceviewer_close, doc);
    
    ui_tabview(win, .tabview = UI_TABVIEW_INVISIBLE, .varname = "tabview", .fill = TRUE) {
        /* loading / message tab */
        ui_tab(win, NULL) {
            ui_hbox(win, .margin = 16, .spacing = 10, .fill = TRUE) {
                ui_progressspinner(win, .varname = "loading");
                ui_label(win, .varname = "message");
            }
        }
        
        /* preview tab */
        ui_tab(win, NULL) {
            ui_tabview(win, .fill = TRUE) {
                if(type == DAV_RESOURCE_VIEW_TEXT) {
                    ui_tab(win, "Content") {
                        ui_textarea(win, .varname = "text", .onchange = action_resourceviewer_text_modified);
                    }
                } else if(type == DAV_RESOURCE_VIEW_IMAGE) {
                    ui_tab(win, "Preview") {
                        ui_imageviewer(win,
                                .varname = "image",
                                .scrollarea = TRUE,
                                .useradjustable = TRUE,
                                .fill = TRUE);
                    }
                }
                
                ui_tab(win, "Info") {
                    ui_grid(win, .margin = 16, .columnspacing = 30, .rowspacing = 6, .fill = TRUE) {
                        ui_llabel(win, .label = "URL");
                        ui_llabel(win, .varname = "info_url");
                        ui_newline(win);
                        
                        ui_llabel(win, .label = "Name");
                        ui_llabel(win, .varname = "info_name");
                        ui_newline(win);
                        
                        ui_llabel(win, .label = "Type");
                        ui_llabel(win, .varname = "info_type");
                        ui_newline(win);
                        
                        ui_llabel(win, .label = "Encrypted");
                        ui_llabel(win, .varname = "info_encrypted");
                        ui_newline(win);
                        
                        ui_llabel(win, .label = "ETag");
                        ui_llabel(win, .varname = "info_etag");
                        ui_newline(win);
                        
                        ui_llabel(win, .label = "Size");
                        ui_llabel(win, .varname = "info_size");
                        ui_newline(win);
                    }
                }
                
                ui_tab(win, "Properties") {
                    UiModel* model = ui_model(win->ctx, UI_STRING, "Namespace", UI_STRING, "Name", UI_STRING, "Value", -1);
                    ui_table(win,
                            .fill = TRUE,
                            .model = model,
                            .getvalue = (ui_getvaluefunc) resourceviewer_proplist_getvalue,
                            .varname = "properties",
                            .onselection = action_resourceviewer_property_select,
                            .onactivate = action_resourceviewer_property_activate);
                    ui_hbox(win, .margin = 4, .spacing = 4) {
                        ui_button(win, .label = "Add", .onclick = action_resourceviewer_property_add);
                        ui_button(win, .label = "Edit", .onclick = action_resourceviewer_property_edit, .groups = UI_GROUPS(RESOURCEVIEWER_STATE_PROP_SELECTED));
                        ui_button(win, .label = "Remove", .onclick = action_resourceviewer_property_remove, .groups = UI_GROUPS(RESOURCEVIEWER_STATE_PROP_SELECTED));
                    }
                }
            }
        }
    }
    
    dav_resourceviewer_load(win, doc);
    
    ui_show(win);
}

void* resourceviewer_proplist_getvalue(DavPropertyList *property, int col) {
    switch(col) {
        case 0: {
            return property->ns;
        }
        case 1: {
            return property->name;
        }
        case 2: {
            return property->value_simplified ? property->value_simplified : property->value_full;
        }
    }
    
    return NULL;
}


typedef struct AuthDialogWindow {
    UiString *user;
    UiString *password;
} AuthDialogWindow;

static void auth_dialog_action(UiEvent *event, void *data) {
    SessionAuthData *auth = data;
    AuthDialogWindow *wdata = event->window;
    int result = 0;
    if(event->intval == 4) {
        char *user = ui_get(wdata->user);
        char *password = ui_get(wdata->password);
        davbrowser_auth_set_user_pwd(auth, user, password);
        result = 1;
    }
    ui_condvar_signal(auth->cond, NULL, result);
    ui_close(event->obj);
}

void auth_dialog(SessionAuthData *auth) {
    UiObject *obj = ui_dialog_window(auth->obj,
            .title = "Authentication", 
            .lbutton1 = "Cancel",
            .rbutton4 = "Connect",
            .default_button = 4,
            .show_closebutton = UI_OFF,
            .onclick = auth_dialog_action,
            .onclickdata = auth);
    
    AuthDialogWindow *wdata = ui_malloc(obj->ctx, sizeof(AuthDialogWindow));
    wdata->user = ui_string_new(obj->ctx, NULL);
    wdata->password = ui_string_new(obj->ctx, NULL);
    obj->window = wdata;
    
    ui_grid(obj, .margin = 20, .columnspacing = 12, .rowspacing = 12, .fill = TRUE) {
        cxmutstr heading = cx_asprintf("Authentication required for: %s", auth->sn->base_url);
        ui_llabel(obj, .label = heading.ptr, .colspan = 2);
        free(heading.ptr);
        ui_newline(obj);
        
        ui_llabel(obj, .label = "User");
        ui_textfield(obj, .value = wdata->user, .hexpand = TRUE);
        ui_newline(obj);
        
        ui_llabel(obj, .label = "Password");
        ui_passwordfield(obj, .value = wdata->password, .hexpand = TRUE);
    }
     
    if(auth->user) {
        ui_set(wdata->user, auth->user);
    }
    
    ui_show(obj);
}


void transfer_window_init(UiObject *dialog, ui_callback btncallback) {
    ui_window_size(dialog, 550, 120);
    ui_grid(dialog, .margin = 10, .spacing = 10, .fill = TRUE) {
        ui_llabel(dialog, .varname = "label_top_left", .hexpand = TRUE);
        ui_rlabel(dialog, .varname = "label_top_right");
        ui_newline(dialog);

        ui_progressbar(dialog, .varname = "progressbar", .min = 0, .max = 100, .colspan = 2, .hexpand = TRUE);
        ui_newline(dialog);

        ui_llabel(dialog, .varname = "label_bottom_left", .hexpand = TRUE);
        ui_rlabel(dialog, .varname = "label_bottom_right");
        ui_newline(dialog);
        
        ui_label(dialog, .vexpand = TRUE);
        ui_newline(dialog);
        
        ui_hbox(dialog, .colspan = 2, .hexpand = TRUE) {
            ui_label(dialog, .hexpand = TRUE);
            ui_button(dialog, .label = "Cancel", .onclick = btncallback);
        }
    }
}


static UiPathElm* dav_get_pathelm(const char *full_path, size_t len, size_t *ret_nelm, void* data) {
    if (len == 0) {
        *ret_nelm = 0;
        return NULL;
    }

    cxstring fpath = cx_strn(full_path, len);
    int protocol = 0;
    if (cx_strcaseprefix(fpath, CX_STR("http://"))) {
        protocol = 7;
    } else if (cx_strcaseprefix(fpath, CX_STR("https://"))) {
        protocol = 8;
    }

    size_t start = 0;
    size_t end = 0;
    for (size_t i = protocol; i < len; i++) {
        if (full_path[i] == '/') {
            end = i;
            break;
        }
    }

    int skip = 0;
    if (end == 0) {
        // no '/' found or first char is '/'
        end = len > 0 && full_path[0] == '/' ? 1 : len;
    } else if (end + 1 <= len) {
        skip++; // skip first '/'
    }


    cxmutstr base = cx_strdup(cx_strn(full_path, end));
    cxmutstr base_path = cx_strcat(2, cx_strcast(base), CX_STR("/"));
    cxstring path = cx_strsubs(fpath, end + skip);
    
    cxstring trail = cx_str(len > 0 && full_path[len-1] == '/' ? "/" : "");

    cxstring *pathelms;
    size_t nelm = 0;

    if (path.length > 0) {
        nelm = cx_strsplit_a(cxDefaultAllocator, path, CX_STR("/"), 4096, &pathelms);
        if (nelm == 0) {
            *ret_nelm = 0;
            return NULL;
        }
    }

    UiPathElm* elms = (UiPathElm*) calloc(nelm + 1, sizeof (UiPathElm));
    size_t n = nelm + 1;
    elms[0].name = base.ptr;
    elms[0].name_len = base.length;
    elms[0].path = base_path.ptr;
    elms[0].path_len = base_path.length;

    int j = 1;
    for (int i = 0; i < nelm; i++) {
        cxstring c = pathelms[i];
        if (c.length == 0) {
            if (i == 0) {
                c.length = 1;
            } else {
                n--;
                continue;
            }
        }

        cxmutstr m = cx_strdup(c);
        elms[j].name = m.ptr;
        elms[j].name_len = m.length;

        size_t elm_path_len = c.ptr + c.length - full_path;
        cxmutstr elm_path = cx_strcat(2, cx_strn(full_path, elm_path_len), i+1 < nelm ? CX_STR("/") : trail);
        elms[j].path = elm_path.ptr;
        elms[j].path_len = elm_path.length;

        j++;
    }
    *ret_nelm = n;

    return elms;
}

void action_go_parent(UiEvent *event, void *data) {
    DavBrowser *browser = event->document;
    davbrowser_navigation_parent(event->obj, browser);
}

void action_go_back(UiEvent *event, void *data) {
    DavBrowser *browser = event->document;
    davbrowser_navigation_back(event->obj, browser);
}

void action_go_forward(UiEvent *event, void *data) {
    DavBrowser *browser = event->document;
    davbrowser_navigation_forward(event->obj, browser);
}

void action_path_selected(UiEvent *event, void *data) {
    DavBrowser *browser = event->document;
    char *path = event->eventdata;
    if (path && strlen(path) > 0) {
        davbrowser_query_url(event->obj, browser, path);
    }
}

void action_list_selection(UiEvent *event, void *data) {
    UiListSelection *selection = event->eventdata;
    if (selection->count > 0) {
        ui_set_group(event->obj->ctx, APP_STATE_BROWSER_SELECTION);
    } else {
        ui_unset_group(event->obj->ctx, APP_STATE_BROWSER_SELECTION);
    }
}

void action_list_activate(UiEvent *event, void *data) {
    UiListSelection *selection = event->eventdata;
    DavBrowser *browser = event->document;

    if (selection->count == 1) {
        DavResource *res = ui_list_get(browser->resources, selection->rows[0]);
        if (res) {
            if (res->iscollection) {
                davbrowser_query_path(event->obj, browser, res->path);
            } else {
                davbrowser_open_resource(event->obj, browser, res, NULL);
            }
        }
    }
}

static int filelist_uri2path(UiFileList *files) {
    for(int i=0;i<files->nfiles;i++) {
        char *uri = files->files[i];
        if(uri[0] == '/') {
            continue;
        }
        
        cxstring uri_s = cx_str(uri);
        if(!cx_strprefix(uri_s, CX_STR("file://"))) {
            return 1;
        }
        
        files->files[i] = cx_strdup(cx_strsubs(uri_s, 7)).ptr;
        free(uri);
    }
    
    return 0;
}

void action_dnd_drop(UiEvent *event, void *data) {
    UiDnD *dnd = event->eventdata;
    UiFileList files = ui_selection_geturis(dnd);
    if(files.nfiles == 0) {
        return;
    }
    
    if(filelist_uri2path(&files)) {
        ui_dnd_accept(dnd, FALSE);
        ui_filelist_free(files);
        return;
    }

    davbrowser_upload_files(event->obj, event->document, files);
}


/* ------------------------ resource viewer actions ------------------------ */

void action_resourceviewer_text_modified(UiEvent *event, void *data) {
    DavResourceViewer *doc = event->document;
    if(doc->loaded) {
        ui_set_group(event->obj->ctx, RESOURCEVIEWER_STATE_MODIFIED);
    }
}

void action_resourceviewer_save(UiEvent *event, void *data) {
    DavResourceViewer *doc = event->document;
    dav_resourceviewer_save(event->obj, doc);
}

void action_resourceviewer_property_select(UiEvent *event, void *data) {
    DavResourceViewer *doc = event->document;
    UiListSelection *selection = event->eventdata;
    if(selection->count == 1) {
        ui_set_group(event->obj->ctx, RESOURCEVIEWER_STATE_PROP_SELECTED);
        doc->selected_property = ui_list_get(doc->properties, selection->rows[0]);
    } else {
        ui_unset_group(event->obj->ctx, RESOURCEVIEWER_STATE_PROP_SELECTED);
        doc->selected_property = NULL;
    }
}

void action_resourceviewer_property_activate(UiEvent *event, void *data) {
    action_resourceviewer_property_select(event, data);
    action_resourceviewer_property_edit(event, data);
}


typedef struct PropertyDialog {
    UiInteger *type;
    UiString *ns;
    UiString *name;
    UiText *value;
} PropertyDialog;

static void propertydialog_action(UiEvent *event, void *data) {
    DavResourceViewer *res = data;
    if(event->intval == 4) {
        char *ns = ui_get(res->property_ns);
        char *name = ui_get(res->property_name);
        int type = ui_get(res->property_type);
        char *nsdef = ui_get(res->property_nsdef);
        char *value = ui_get(res->property_value);
        
        if(strlen(ns) == 0) {
            ui_set(res->property_errormsg, "Namespace must not be empty!");
            return;
        }
        if(strlen(name) == 0) {
            ui_set(res->property_errormsg, "Name must not be empty!");
            return;
        }
        
        char *textvalue = NULL;
        DavXmlNode *xmlvalue = NULL;
        if(type == 0) {
            // text value
            textvalue = value;
        } else {
            // xml value
        }
        
        DavBool add = FALSE;
        if(res->edit_property) {
            if(strcmp(res->edit_property->ns, ns) || strcmp(res->edit_property->name, name)) {
                // name or namespace changed, remove existing and create new property
                dav_resourceviewer_property_remove(res, res->edit_property);
                add = TRUE;
            }
        } else {
            add = TRUE;
        }
        
        if(add) {
            if(textvalue) {
                dav_resourceviewer_property_add_text(res, ns, name, textvalue);
            } else {
                dav_resourceviewer_property_add_xml(res, ns, name, nsdef, xmlvalue);
            }
        } else {
            if(textvalue) {
                dav_resourceviewer_property_update_text(res, res->edit_property, textvalue);
            } else {
                dav_resourceviewer_property_update_xml(res, res->edit_property, xmlvalue);
            }
        }
    }
    ui_close(event->obj);
}

static void prop_type_changed(UiEvent *event, void *data) {
    DavResourceViewer *res = data;
    switch(ui_get(res->property_type)) {
        case 0: {
            ui_unset_group(event->obj->ctx, RESOURCEVIEWER_STATE_PROP_XML);
            break;
        }
        case 1: {
            ui_set_group(event->obj->ctx, RESOURCEVIEWER_STATE_PROP_XML);
            char *ns = ui_get(res->property_ns);
            char *nsdef = ui_get(res->property_nsdef);
            if(strlen(nsdef) == 0) {
                cxmutstr def = cx_asprintf("xmlns:x0=\"%s\"", ns);
                ui_set(res->property_nsdef, def.ptr);
                free(def.ptr);
            }
            
            break;
        }
    }
}

static void edit_property_dialog(DavResourceViewer *res, const char *title, DavPropertyList *prop) {
    res->edit_property = prop;
    
    UiObject *obj = ui_dialog_window(res->obj,
            .title = title,
            .show_closebutton = UI_OFF,
            .lbutton1 = "Cancel",
            .rbutton4 = "Save",
            .default_button = 4,
            .onclick = propertydialog_action,
            .onclickdata = res,
            .width = 600,
            .height = 500);
    
    ui_grid(obj, .margin = 16, .columnspacing = 8, .rowspacing = 12) {
        ui_llabel(obj, .label = "Namespace");
        ui_textfield(obj, .hexpand = TRUE, .value = res->property_ns);
        ui_newline(obj);
        
        ui_llabel(obj, .label = "Property Name");
        ui_textfield(obj, .hexpand = TRUE, .value = res->property_name);
        ui_newline(obj);
        
        ui_llabel(obj, .label = "Type");
        ui_hbox(obj, .spacing = 8, .colspan = 2) {
            ui_radiobutton(obj, .label = "Text", .value = res->property_type, .onchange = prop_type_changed, .onchangedata = res);
            ui_radiobutton(obj, .label = "XML", .value = res->property_type, .onchange = prop_type_changed, .onchangedata = res);
        }
        ui_newline(obj);
        
        ui_llabel(obj, .label = "Namespace Declarations");
        ui_textfield(obj, .hexpand = TRUE, .value = res->property_nsdef, .groups = UI_GROUPS(RESOURCEVIEWER_STATE_PROP_XML));
        ui_newline(obj);
        
        ui_textarea(obj, .value = res->property_value, .hexpand = TRUE, .vexpand = TRUE, .colspan = 2);
        ui_newline(obj);
        
        ui_llabel(obj, .colspan = 2, .value = res->property_errormsg);
    }
    
    if(prop && prop->ns && prop->name) {
        ui_set(res->property_ns, prop->ns);
        ui_set(res->property_name, prop->name);
        if(prop->value_full) {
            ui_set(res->property_type, 0);
            ui_set(res->property_nsdef, "");
            ui_set(res->property_value, prop->value_full);
            ui_unset_group(obj->ctx, RESOURCEVIEWER_STATE_PROP_XML);
        } else if(prop->xml) {
            ui_set(res->property_type, 1);
            cxmutstr xml;
            cxmutstr nsdef;
            property_xml2str(prop->xml, prop->ns, &xml, &nsdef);
            ui_set(res->property_nsdef, nsdef.ptr);
            ui_set(res->property_value, xml.ptr);
            free(xml.ptr);
            free(nsdef.ptr);
            ui_set_group(obj->ctx, RESOURCEVIEWER_STATE_PROP_XML);
        }
    } else {
        ui_set(res->property_ns, "");
        ui_set(res->property_name, "");
        ui_set(res->property_nsdef, "");
        ui_set(res->property_type, 0);
        ui_set(res->property_value, "");
    }
    
    ui_set(res->property_errormsg, "");
    
    ui_show(obj);
}

void action_resourceviewer_property_add(UiEvent *event, void *data) {
    DavResourceViewer *doc = event->document;
    edit_property_dialog(doc, "Add Property", NULL);
}

void action_resourceviewer_property_edit(UiEvent *event, void *data) {
    DavResourceViewer *doc = event->document;
    edit_property_dialog(doc, "Edit Property", doc->selected_property);
}

void action_resourceviewer_property_remove(UiEvent *event, void *data) {
    DavResourceViewer *doc = event->document;
    if(!doc->selected_property) {
        return; // shouldn't happen
    }
    dav_resourceviewer_property_remove(doc, doc->selected_property);
}