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 return true;
35 }
37 function button(evnt, txt) {
38 return A3(newElement, 100, 40, {
39 ctor: 'Custom',
40 type: 'Button',
41 render: render,
42 update: update,
43 model: { event:evnt, text:fromString(txt) }
44 });
45 }
47 return { _:{}, button:F2(button), events:events };
48 }
50 function customButtons(defaultValue) {
51 var events = Signal.constant(defaultValue);
53 function render(model) {
54 var btn = newNode('div');
55 btn.elmEvent = model.event;
57 btn.elmUp = Render.render(model.up);
58 btn.elmHover = Render.render(model.hover);
59 btn.elmDown = Render.render(model.down);
61 function replace(node) { return function() {
62 if (node !== btn.firstChild) btn.replaceChild(node, btn.firstChild);
63 };
64 }
65 var hover = replace(btn.elmHover);
66 function up() { hover(); elm.notify(events.id, btn.elmEvent); }
67 btn.addEventListener('mouseover', hover);
68 btn.addEventListener('mouseout' , replace(btn.elmUp));
69 btn.addEventListener('mousedown', replace(btn.elmDown));
70 btn.addEventListener('mouseup' , up);
72 btn.appendChild(btn.elmUp);
73 return btn;
74 }
76 function update(node, oldModel, newModel) {
77 node.elmEvent = newModel.event;
78 Render.update(node.elmUp, oldModel.up, newModel.up)
79 Render.update(node.elmHover, oldModel.hover, newModel.hover)
80 Render.update(node.elmDown, oldModel.down, newModel.down)
81 }
83 function button(evnt, up, hover, down) {
84 return A3(newElement,
85 Math.max(up.props.width, hover.props.width, down.props.width),
86 Math.max(up.props.height, hover.props.height, down.props.height),
87 { ctor: 'Custom',
88 type: 'CustomButton',
89 render: render,
90 update: update,
91 model: { event:evnt, up:up, hover:hover, down:down }
92 });
93 }
95 return { _:{}, button:F4(button), events:events };
96 }
98 function textFields(defaultValue) {
99 var events = Signal.constant(defaultValue);
101 function render(model) {
102 var field = newNode('input');
103 field.elmHandler = model.handler;
105 field.id = 'test'
106 field.placeholder = fromString(model.placeHolder);
107 field.elmValue = fromString(model.state.input);
108 field.value = field.elmValue;
109 field.setSelectionRange(model.state.start, model.state.end);
110 field.style.border = 'none';
112 function update() {
113 var state = { _:{},
114 input:toString(field.value),
115 start:field.selectionStart,
116 end:field.selectionEnd };
117 field.value = field.elmValue;
118 elm.notify(events.id, state);
119 }
120 function mousedown() {
121 update();
122 elm.node.addEventListener('mouseup', mouseup);
123 }
124 function mouseup() {
125 update();
126 elm.node.removeEventListener('mouseup', mouseup)
127 }
128 field.addEventListener('keyup', update);
129 field.addEventListener('mousedown', mousedown);
131 return field;
132 }
134 function update(node, oldModel, newModel) {
135 node.elmEvent = newModel.handler;
136 node.elmValue = fromString(newModel.state.input);
137 node.value = node.elmValue;
138 node.setSelectionRange(newModel.state.start, newModel.state.end);
139 }
141 function field(handler, placeHolder, state) {
142 return A3(newElement, 200, 30,
143 { ctor: 'Custom',
144 type: 'TextField',
145 render: render,
146 update: update,
147 model: { handler:handler,
148 placeHolder:placeHolder,
149 state:state }
150 });
151 }
153 return { _:{}, field:F3(field), events:events };
154 }
156 return elm.Native.Graphics.Input = {
157 buttons:buttons,
158 customButtons:customButtons,
159 textFields:textFields
160 };
162};