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comparison: ui/winui/list.cpp

ui/winui/list.cpp

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1 /*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
3 *
4 * Copyright 2023 Olaf Wintermann. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include "list.h"
30 #include "container.h"
31 #include "util.h"
32
33 #include "../common/context.h"
34 #include "../common/object.h"
35
36 #include <winrt/Microsoft.UI.Xaml.Data.h>
37
38 using namespace winrt;
39 using namespace Microsoft::UI::Xaml;
40 using namespace Microsoft::UI::Xaml::Controls;
41 using namespace Windows::UI::Xaml::Interop;
42 using namespace winrt::Windows::Foundation;
43 using namespace winrt::Microsoft::UI::Xaml::Controls::Primitives;
44
45 UIWIDGET ui_listview_create(UiObject* obj, UiListArgs args) {
46 UiObject* current = uic_current_obj(obj);
47
48 // create listview and toolkit wrapper
49 ListView listview = ListView();
50 if (args.multiselection) {
51 listview.SelectionMode(ListViewSelectionMode::Extended);
52 }
53
54 bool clickEnabled = listview.IsItemClickEnabled();
55 listview.IsItemClickEnabled(true);
56
57
58 UIElement elm = listview;
59 UiWidget* widget = new UiWidget(elm);
60 widget->data1 = args.model;
61 widget->data2 = args.getvalue;
62 ui_context_add_widget_destructor(current->ctx, widget);
63
64 // bind var
65 UiVar* var = uic_widget_var(obj->ctx, current->ctx, args.list, args.varname, UI_VAR_LIST);
66 if (var) {
67 UiList* list = (UiList*)var->value;
68 list->update = ui_simple_list_update;
69 list->obj = widget;
70 ui_simple_list_update(list, 0);
71 }
72
73 if (args.onselection) {
74 ui_callback onselection = args.onselection;
75 void* cbdata = args.onselectiondata;
76 listview.SelectionChanged([onselection, cbdata, obj](IInspectable const& sender, RoutedEventArgs evtargs) {
77 std::vector<int> selectedRows = ui_create_listview_selection(sender.as<ListView>());
78
79 UiListSelection selection;
80 selection.rows = selectedRows.data();
81 selection.count = selectedRows.size();
82
83 UiEvent evt;
84 evt.obj = obj;
85 evt.window = obj->window;
86 evt.document = obj->ctx->document;
87 evt.eventdata = &selection;
88 evt.intval = 0;
89 onselection(&evt, cbdata);
90 });
91 }
92 if (args.onactivate) {
93 ui_callback cb = args.onactivate;
94 void* cbdata = args.onactivatedata;
95 listview.ItemClick([cb, cbdata, obj](IInspectable const& sender, RoutedEventArgs evtargs) {
96 std::vector<int> selectedRows = ui_create_listview_selection(sender.as<ListView>());
97 UiListSelection selection;
98 selection.rows = selectedRows.data();
99 selection.count = selectedRows.size();
100
101 UiEvent evt;
102 evt.obj = obj;
103 evt.window = obj->window;
104 evt.document = obj->ctx->document;
105 evt.eventdata = &selection;
106 evt.intval = 0;
107 cb(&evt, cbdata);
108 });
109 }
110
111 // add listview to current container
112 UI_APPLY_LAYOUT1(current, args);
113
114 current->container->Add(listview, false);
115
116 return widget;
117 }
118
119 static void* getstrvalue(void* elm, int ignore) {
120 return elm;
121 }
122
123 void ui_simple_list_update(UiList* list, int i) {
124 UiWidget* widget = (UiWidget*)list->obj;
125 UiModel* model = (UiModel*)widget->data1;
126 ui_getvaluefunc getvalue = (ui_getvaluefunc)widget->data2;
127 ListView listview = widget->uielement.as<ListView>();
128 auto items = listview.Items();
129
130 // priority: getvalue, model.getvalue, getstrvalue (fallback)
131 if (getvalue == nullptr) {
132 if (model && model->getvalue) {
133 getvalue = model->getvalue;
134 } else {
135 getvalue = getstrvalue;
136 }
137 }
138
139 // add list elements to listview.Items
140 items.Clear();
141 void* elm = list->first(list);
142 while (elm) {
143 char* value = (char*)getvalue(elm, 0);
144 wchar_t* wstr = str2wstr(value, nullptr);
145 items.Append(box_value(wstr));
146 free(wstr);
147
148 elm = list->next(list);
149 }
150 }
151
152 std::vector<int> ui_create_listview_selection(ListView listview) {
153 std::vector<int> selection;
154 int p = 0;
155 auto ranges = listview.SelectedRanges();
156 for (auto range : ranges) {
157 int begin = range.FirstIndex();
158 int end = range.LastIndex();
159 for (int i = begin; i <= end; i++) {
160 selection.push_back(i);
161 }
162 }
163 return selection;
164 }
165

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