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Aurelia OnKeyBindingBehavior updated
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| <template> | |
| <require from="./on-key"></require> | |
| <div> | |
| Press [<b>Ctrl + Enter</b>] in textbox <br/> | |
| Or [<b>Alt + Click</b>] it to trigger event | |
| </div> | |
| <input | |
| value.bind="message" | |
| keyup.delegate="textEntered() & keys:'ctrl':13" | |
| mousedown.delegate="textClicked() & keys:'alt'" | |
| /> | |
| <hr/> | |
| <label style='display: block;'> | |
| Dynamic key binding:<br/> | |
| <input type='number' value.bind='key | number'/> | |
| </label> | |
| </template> |
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| export class App { | |
| message = 'Hello World!'; | |
| textEntered() { | |
| alert(this.message); | |
| } | |
| textClicked() { | |
| alert(this.message); | |
| } | |
| } | |
| export class NumberValueConverter { | |
| fromView(v) { | |
| return parseFloat(v); | |
| } | |
| } |
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| <!doctype html> | |
| <html> | |
| <head> | |
| <title>Aurelia</title> | |
| <meta name="viewport" content="width=device-width, initial-scale=1"> | |
| </head> | |
| <body aurelia-app> | |
| <h1>Loading...</h1> | |
| <script src="https://jdanyow.github.io/rjs-bundle/node_modules/requirejs/require.js"></script> | |
| <script src="https://jdanyow.github.io/rjs-bundle/config.js"></script> | |
| <script src="https://jdanyow.github.io/rjs-bundle/bundles/aurelia.js"></script> | |
| <script src="https://jdanyow.github.io/rjs-bundle/bundles/babel.js"></script> | |
| <script> | |
| require(['aurelia-bootstrapper']); | |
| </script> | |
| </body> | |
| </html> |
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| export const keyMap = { | |
| enter: 13, | |
| esc: 27, | |
| tab: 9, | |
| // When you wish to change something at run time or after start | |
| setAlias(alias, key) { | |
| this[alias] = key; | |
| remapAllBehaviors(); | |
| }, | |
| setMetaKey(alias, key) { | |
| metaKeys[alias] = key; | |
| remapAllBehaviors(); | |
| } | |
| } | |
| export class KeysBindingBehavior { | |
| binding: any | |
| inputs: ( string | number)[] | |
| bind(binding, scope, ...keyCodesOrAliases) { | |
| if (!binding.callSource || !binding.targetEvent) { | |
| throw new Error('Keys binding behavior only supports event.'); | |
| } | |
| if(keyCodesOrAliases.length === 0) { | |
| throw new Error("Expected at least one key-code or alias that should trigger the event"); | |
| } | |
| this.binding = binding; | |
| // need to hold this for reuse | |
| this.inputs = keyCodesOrAliases; | |
| this.map(); | |
| keysBehaviors.push(this); | |
| binding.isKeyboardEvent = keyboardEvents.indexOf(binding.targetEvent) !== -1; | |
| binding.keyCodeFilteredCallSource = binding.callSource; | |
| binding.callSource = keysCallSource; | |
| } | |
| unbind(binding, scope) { | |
| const idx = keysBehaviors.indexOf(this); | |
| if (idx !== -1) { | |
| keysBehaviors.splice(idx, 1); | |
| } | |
| binding.callSource = binding.keyCodeFilteredCallSource; | |
| binding.keyCodeFilteredCallSource = binding.keys = binding.inputs = null; | |
| } | |
| map() { | |
| this.binding.keys = this.inputs.reduce(keyMapper, []); | |
| } | |
| } | |
| const keysBehaviors = []; | |
| function remapAllBehaviors() { | |
| for (let i = 0, ii = keysBehaviors.length; i < ii; ++i) keysBehaviors[i].map(); | |
| } | |
| const metaKeys = { | |
| ctrl: true, | |
| alt: true, | |
| shift: true, | |
| meta: true | |
| } | |
| const keyboardEvents = ['keydown', 'keypress', 'keyup', 'input']; | |
| function keyMapper(keys, item) { | |
| if (typeof item === 'number') { | |
| keys.push(item); | |
| } else if (metaKeys[item]) { | |
| (keys.meta = keys.meta || []).push(item); | |
| } else if (keyMap[item]) { | |
| keys.push(keyMap[item]); | |
| } | |
| return keys; | |
| } | |
| function keysCallSource(event) { | |
| const keys = this.keys; | |
| if (keys.meta) { | |
| for (let i = 0, ii = keys.meta.length; i < ii; ++i) { | |
| if (!event[keys.meta[i] + 'Key']) return; | |
| } | |
| } | |
| if (this.isKeyboardEvent) { | |
| if (keys.indexOf(event.keyCode) !== -1) { | |
| this.keyCodeFilteredCallSource(event); | |
| } | |
| return; | |
| } | |
| this.keyCodeFilteredCallSource(event); | |
| } |
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