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April 12, 2018 16:45
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| <!doctype html> | |
| <script type="module"> | |
| import cmkey from "./cmkey.js" | |
| const log = text => { | |
| document.querySelector("#div").prepend(text, document.createElement("br")) | |
| } | |
| cmkey.setOptions({ | |
| modifier: "Space", | |
| submodifier: "Home", | |
| action: { | |
| KeyA() { log("m-a pressed") }, | |
| KeyB() { log("m-b pressed") }, | |
| KeyC: "State1" | |
| }, | |
| subaction: { | |
| KeyX() { log("s-x pressed") }, | |
| }, | |
| stateactions: { | |
| State1: { | |
| "M/KeyA"() { log("m-c m-a pressed") }, | |
| KeyB() { log("m-c b pressed") }, | |
| "S/KeyC"() { log("m-c s-c pressed") }, | |
| KeyD: "State2", | |
| }, | |
| State2: { | |
| KeyA() { log("m-c d a pressed") }, | |
| }, | |
| }, | |
| except_selector: "input", | |
| }) | |
| cmkey.addStateChangedListener(state => { | |
| const state_elem = document.querySelector("#state") | |
| state_elem.innerHTML = state || "" | |
| state_elem.style.backgroundColor = { | |
| State1: "yellow", | |
| State2: "greenyellow", | |
| }[state] | |
| }) | |
| </script> | |
| <style> | |
| #state { | |
| position: fixed; | |
| bottom: 0; | |
| left: 0; | |
| width: 100vw; | |
| } | |
| </style> | |
| <input> | |
| <div>Log</div> | |
| <div id="div"></div> | |
| <div id="state"></div> |
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| export default { | |
| setOptions(opt) { | |
| Object.assign(options, opt) | |
| }, | |
| getOptions() { | |
| return options | |
| }, | |
| addStateChangedListener(fn) { | |
| if (typeof fn === "function") { | |
| state_changed_listeners.push(fn) | |
| } | |
| }, | |
| __detectKey() { | |
| window.addEventListener("keydown", eve => { | |
| console.log(eve.code) | |
| }) | |
| }, | |
| } | |
| const options = { | |
| selector: "", | |
| except_selector: "", | |
| modifier: "", | |
| submodifier: "", | |
| action: {}, | |
| subaction: {}, | |
| stateactions: {}, | |
| } | |
| const state_changed_listeners = [] | |
| const status = { | |
| _state: null, | |
| get state() { | |
| return this._state | |
| }, | |
| set state(value) { | |
| state_changed_listeners.forEach(f => f(value)) | |
| this._state = value | |
| }, | |
| modifier: false, | |
| submodifier: false, | |
| } | |
| window.addEventListener( | |
| "keydown", | |
| eve => { | |
| const handled = (() => { | |
| const code = eve.code | |
| if (!options.modifier) { | |
| return false | |
| } | |
| if ((code === options.modifier && status.submodifier) || (code === options.submodifier && status.modifier)) { | |
| return false | |
| } | |
| if (code === options.modifier) { | |
| status.modifier = true | |
| return true | |
| } | |
| if (code === options.submodifier) { | |
| status.submodifier = true | |
| return true | |
| } | |
| const matched = | |
| (options.selector ? eve.target.matches(options.selector) : true) && | |
| (options.except_selector ? !eve.target.matches(options.except_selector) : true) | |
| if (!matched) { | |
| return false | |
| } | |
| if (status.state) { | |
| const action = options.stateactions[status.state] || {} | |
| const prefix = status.modifier ? "M/" : status.submodifier ? "S/" : "" | |
| return doAction(action, prefix + code) | |
| } else { | |
| const action = status.modifier ? options.action : status.submodifier ? options.subaction : {} | |
| return doAction(action, code) | |
| } | |
| function doAction(action, key) { | |
| if (typeof action[key] === "function") { | |
| action[key](eve) | |
| status.state = null | |
| return true | |
| } else if (typeof action[key] === "string") { | |
| status.state = action[key] | |
| return true | |
| } | |
| return false | |
| } | |
| return false | |
| })() | |
| if (handled) { | |
| eve.preventDefault() | |
| } else { | |
| status.state = null | |
| } | |
| }, | |
| true | |
| ) | |
| window.addEventListener( | |
| "keyup", | |
| eve => { | |
| const code = eve.code | |
| if (code === options.modifier) { | |
| status.modifier = false | |
| } | |
| if (code === options.submodifier) { | |
| status.submodifier = false | |
| } | |
| }, | |
| true | |
| ) |
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| <!doctype html> | |
| <script type="module"> | |
| import Cmkey from "./Cmkey_class.js" | |
| const log = text => { | |
| document.querySelector("#div").prepend(text, document.createElement("br")) | |
| } | |
| new Cmkey({ | |
| modifier: "Space", | |
| submodifier: "Home", | |
| action: { | |
| KeyA() { log("m-a pressed") }, | |
| KeyB() { log("m-b pressed") }, | |
| KeyC: "State1" | |
| }, | |
| subaction: { | |
| KeyX() { log("s-x pressed") }, | |
| }, | |
| stateactions: { | |
| State1: { | |
| "M/KeyA"() { log("m-c m-a pressed") }, | |
| KeyB() { log("m-c b pressed") }, | |
| "S/KeyC"() { log("m-c s-c pressed") }, | |
| KeyD: "State2", | |
| }, | |
| State2: { | |
| KeyA() { log("m-c d a pressed") }, | |
| }, | |
| }, | |
| except_selector: "input", | |
| onstatechange: state => { | |
| const state_elem = document.querySelector("#state") | |
| state_elem.innerHTML = state || "" | |
| state_elem.style.backgroundColor = { | |
| State1: "yellow", | |
| State2: "greenyellow", | |
| }[state] | |
| } | |
| }).observe(window) | |
| </script> | |
| <style> | |
| #state { | |
| position: fixed; | |
| bottom: 0; | |
| left: 0; | |
| width: 100vw; | |
| } | |
| </style> | |
| <input> | |
| <div>Log</div> | |
| <div id="div"></div> | |
| <div id="state"></div> |
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| export default class Cmkey { | |
| constructor(options) { | |
| this.options = Object.assign( | |
| { | |
| selector: "", | |
| except_selector: "", | |
| modifier: "", | |
| submodifier: "", | |
| action: {}, | |
| subaction: {}, | |
| stateactions: {}, | |
| onstatechange: null, | |
| }, | |
| options | |
| ) | |
| this._state = null | |
| this.modifier = false | |
| this.submodifier = false | |
| this.listeners = { | |
| keydown: keydownListener.bind(this), | |
| keyup: keyupListener.bind(this), | |
| } | |
| this.use_capture = null | |
| } | |
| get state() { | |
| return this._state | |
| } | |
| set state(value) { | |
| this.options.onstatechange && this.options.onstatechange(value) | |
| this._state = value | |
| } | |
| observe(elem, use_capture) { | |
| this.use_capture = use_capture | |
| elem.addEventListener("keydown", this.listeners.keydown, use_capture) | |
| elem.addEventListener("keyup", this.listeners.keyup, use_capture) | |
| } | |
| unobserve() { | |
| elem.removeEventListener("keydown", this.listeners.keydown, this.use_capture) | |
| elem.removeEventListener("keyup", this.listeners.keyup, this.use_capture) | |
| } | |
| } | |
| function keydownListener(eve) { | |
| const {options} = this | |
| const handled = (() => { | |
| const code = eve.code | |
| if (!options.modifier) { | |
| return false | |
| } | |
| if ((code === options.modifier && this.submodifier) || (code === options.submodifier && this.modifier)) { | |
| return false | |
| } | |
| if (code === options.modifier) { | |
| this.modifier = true | |
| return true | |
| } | |
| if (code === options.submodifier) { | |
| this.submodifier = true | |
| return true | |
| } | |
| const matched = | |
| (options.selector ? eve.target.matches(options.selector) : true) && | |
| (options.except_selector ? !eve.target.matches(options.except_selector) : true) | |
| if (!matched) { | |
| return false | |
| } | |
| const doAction = (action, key) => { | |
| if (typeof action[key] === "function") { | |
| action[key](eve) | |
| this.state = null | |
| return true | |
| } else if (typeof action[key] === "string") { | |
| this.state = action[key] | |
| return true | |
| } | |
| return false | |
| } | |
| if (this.state) { | |
| const action = options.stateactions[this.state] || {} | |
| const prefix = this.modifier ? "M/" : this.submodifier ? "S/" : "" | |
| return doAction(action, prefix + code) | |
| } else { | |
| const action = this.modifier ? options.action : this.submodifier ? options.subaction : {} | |
| return doAction(action, code) | |
| } | |
| return false | |
| })() | |
| if (handled) { | |
| eve.preventDefault() | |
| } else { | |
| this.state = null | |
| } | |
| } | |
| function keyupListener(eve) { | |
| const code = eve.code | |
| if (code === this.options.modifier) { | |
| this.modifier = false | |
| } | |
| if (code === this.options.submodifier) { | |
| this.submodifier = false | |
| } | |
| } |
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