git.iko.soy/elk
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elk/libraries/Native/Graphics/Input.js
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2Elm.Native.Graphics.Input = function(elm) {
3 "use strict";
5 elm.Native = elm.Native || {};
6 elm.Native.Graphics = elm.Native.Graphics || {};
7 if (elm.Native.Graphics.Input) return elm.Native.Graphics.Input;
9 var Render = ElmRuntime.use(ElmRuntime.Render.Element);
10 var Utils = ElmRuntime.use(ElmRuntime.Render.Utils);
11 var newNode = Utils.newElement, fromString = Utils.fromString,
12 toString = Utils.toString;
14 var Signal = Elm.Signal(elm);
15 var newElement = Elm.Graphics.Element(elm).newElement;
17 function buttons(defaultValue) {
18 var events = Signal.constant(defaultValue);
20 function render(model) {
21 var b = newNode('button');
22 b.style.display = 'block';
23 b.elmEvent = model.event;
24 function click() { elm.notify(events.id, b.elmEvent); }
25 b.addEventListener('click', click);
26 b.innerHTML = model.text;
27 return b;
28 }
30 function update(node, oldModel, newModel) {
31 node.elmEvent = newModel.event;
32 var txt = newModel.text;
33 if (oldModel.text !== txt) node.innerHTML = txt;
34 }
36 function button(evnt, txt) {
37 return A3(newElement, 100, 40, {
38 ctor: 'Custom',
39 type: 'Button',
40 render: render,
41 update: update,
42 model: { event:evnt, text:fromString(txt) }
43 });
44 }
46 return { _:{}, button:F2(button), events:events };
47 }
49 function customButtons(defaultValue) {
50 var events = Signal.constant(defaultValue);
52 function render(model) {
53 var btn = newNode('div');
54 btn.elmEvent = model.event;
56 btn.elmUp = Render.render(model.up);
57 btn.elmHover = Render.render(model.hover);
58 btn.elmDown = Render.render(model.down);
60 function replace(node) {
61 if (node !== btn.firstChild) btn.replaceChild(node, btn.firstChild);
62 }
63 var overCount = 0;
64 function over(e) {
65 if (overCount++ > 0) return;
66 replace(btn.elmHover);
67 }
68 function out(e) {
69 if (btn.contains(e.toElement || e.relatedTarget)) return;
70 overCount = 0;
71 replace(btn.elmUp);
72 }
73 function up() {
74 replace(btn.elmHover);
75 elm.notify(events.id, btn.elmEvent);
76 }
77 function down() { replace(btn.elmDown); }
78 btn.addEventListener('mouseover', over);
79 btn.addEventListener('mouseout' , out);
80 btn.addEventListener('mousedown', down);
81 btn.addEventListener('mouseup' , up);
83 btn.appendChild(btn.elmUp);
84 return btn;
85 }
87 function update(node, oldModel, newModel) {
88 node.elmEvent = newModel.event;
89 Render.update(node.elmUp, oldModel.up, newModel.up)
90 Render.update(node.elmHover, oldModel.hover, newModel.hover)
91 Render.update(node.elmDown, oldModel.down, newModel.down)
92 }
94 function button(evnt, up, hover, down) {
95 return A3(newElement,
96 Math.max(up.props.width, hover.props.width, down.props.width),
97 Math.max(up.props.height, hover.props.height, down.props.height),
98 { ctor: 'Custom',
99 type: 'CustomButton',
100 render: render,
101 update: update,
102 model: { event:evnt, up:up, hover:hover, down:down }
103 });
104 }
106 return { _:{}, button:F4(button), events:events };
107 }
110 function checkboxes(defaultValue) {
111 var events = Signal.constant(defaultValue);
113 function render(model) {
114 var b = newNode('input');
115 b.type = 'checkbox';
116 b.checked = model.checked;
117 b.style.display = 'block';
118 b.elmHandler = model.handler;
119 function change() { elm.notify(events.id, b.elmHandler(b.checked)); }
120 b.addEventListener('change', change);
121 return b;
122 }
124 function update(node, oldModel, newModel) {
125 node.elmHandler = newModel.handler;
126 node.checked = newModel.checked;
127 return true;
128 }
130 function box(handler, checked) {
131 return A3(newElement, 13, 13, {
132 ctor: 'Custom',
133 type: 'CheckBox',
134 render: render,
135 update: update,
136 model: { checked:checked, handler:handler }
137 });
138 }
140 return { _:{}, box:F2(box), events:events };
141 }
143 function mkTextPool(type) { return function fields(defaultValue) {
144 var events = Signal.constant(defaultValue);
146 function render(model) {
147 var field = newNode('input');
148 field.elmHandler = model.handler;
150 field.id = 'test';
151 field.type = type;
152 field.placeholder = fromString(model.placeHolder);
153 field.value = fromString(model.state.string);
154 field.setSelectionRange(model.state.start, model.state.end);
155 field.style.border = 'none';
157 function update() {
158 var start = field.selectionStart,
159 end = field.selectionEnd;
160 if (field.selectionDirection === 'backward') {
161 start = end;
162 end = field.selectionStart;
163 }
164 var state = { _:{},
165 string:toString(field.value),
166 start:start,
167 end:end };
168 elm.notify(events.id, field.elmHandler(state));
169 }
170 function mousedown() {
171 update();
172 elm.node.addEventListener('mouseup', mouseup);
173 }
174 function mouseup() {
175 update();
176 elm.node.removeEventListener('mouseup', mouseup)
177 }
178 field.addEventListener('keyup', update);
179 field.addEventListener('mousedown', mousedown);
181 return field;
182 }
184 function update(node, oldModel, newModel) {
185 node.elmHandler = newModel.handler;
186 node.value = fromString(newModel.state.string);
187 if (newModel.state.start <= newModel.state.end) {
188 node.setSelectionRange(newModel.state.start, newModel.state.end);
189 } else {
190 node.setSelectionRange(newModel.state.end,
191 newModel.state.start, 'backward');
192 }
193 }
195 function field(handler, placeHolder, state) {
196 return A3(newElement, 200, 30,
197 { ctor: 'Custom',
198 type: type + 'Input',
199 render: render,
200 update: update,
201 model: { handler:handler,
202 placeHolder:placeHolder,
203 state:state }
204 });
205 }
207 return { _:{}, field:F3(field), events:events };
208 }
209 }
211 return elm.Native.Graphics.Input = {
212 buttons:buttons,
213 customButtons:customButtons,
214 checkboxes:checkboxes,
215 fields:mkTextPool('text'),
216 emails:mkTextPool('email'),
217 passwords:mkTextPool('password')
218 };
220};