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File: editor/codemirror/src/edit/key_events.js

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  Classes of Cedric Maenetja   Custom PHP HTML Parser   editor/codemirror/src/edit/key_events.js   Download  
File: editor/codemirror/src/edit/key_events.js
Role: Auxiliary data
Content type: text/plain
Description: Auxiliary data
Class: Custom PHP HTML Parser
Process HTML to replace it with parameter values
Author: By
Last change:
Date: 1 year ago
Size: 5,519 bytes
 

Contents

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import { signalLater } from "../util/operation_group.js" import { restartBlink } from "../display/selection.js" import { isModifierKey, keyName, lookupKey } from "../input/keymap.js" import { eventInWidget } from "../measurement/widgets.js" import { ie, ie_version, mac, presto, gecko } from "../util/browser.js" import { activeElt, addClass, rmClass, doc } from "../util/dom.js" import { e_preventDefault, off, on, signalDOMEvent } from "../util/event.js" import { hasCopyEvent } from "../util/feature_detection.js" import { Delayed, Pass } from "../util/misc.js" import { commands } from "./commands.js" // Run a handler that was bound to a key. function doHandleBinding(cm, bound, dropShift) { if (typeof bound == "string") { bound = commands[bound] if (!bound) return false } // Ensure previous input has been read, so that the handler sees a // consistent view of the document cm.display.input.ensurePolled() let prevShift = cm.display.shift, done = false try { if (cm.isReadOnly()) cm.state.suppressEdits = true if (dropShift) cm.display.shift = false done = bound(cm) != Pass } finally { cm.display.shift = prevShift cm.state.suppressEdits = false } return done } function lookupKeyForEditor(cm, name, handle) { for (let i = 0; i < cm.state.keyMaps.length; i++) { let result = lookupKey(name, cm.state.keyMaps[i], handle, cm) if (result) return result } return (cm.options.extraKeys && lookupKey(name, cm.options.extraKeys, handle, cm)) || lookupKey(name, cm.options.keyMap, handle, cm) } // Note that, despite the name, this function is also used to check // for bound mouse clicks. let stopSeq = new Delayed export function dispatchKey(cm, name, e, handle) { let seq = cm.state.keySeq if (seq) { if (isModifierKey(name)) return "handled" if (/\'$/.test(name)) cm.state.keySeq = null else stopSeq.set(50, () => { if (cm.state.keySeq == seq) { cm.state.keySeq = null cm.display.input.reset() } }) if (dispatchKeyInner(cm, seq + " " + name, e, handle)) return true } return dispatchKeyInner(cm, name, e, handle) } function dispatchKeyInner(cm, name, e, handle) { let result = lookupKeyForEditor(cm, name, handle) if (result == "multi") cm.state.keySeq = name if (result == "handled") signalLater(cm, "keyHandled", cm, name, e) if (result == "handled" || result == "multi") { e_preventDefault(e) restartBlink(cm) } return !!result } // Handle a key from the keydown event. function handleKeyBinding(cm, e) { let name = keyName(e, true) if (!name) return false if (e.shiftKey && !cm.state.keySeq) { // First try to resolve full name (including 'Shift-'). Failing // that, see if there is a cursor-motion command (starting with // 'go') bound to the keyname without 'Shift-'. return dispatchKey(cm, "Shift-" + name, e, b => doHandleBinding(cm, b, true)) || dispatchKey(cm, name, e, b => { if (typeof b == "string" ? /^go[A-Z]/.test(b) : b.motion) return doHandleBinding(cm, b) }) } else { return dispatchKey(cm, name, e, b => doHandleBinding(cm, b)) } } // Handle a key from the keypress event function handleCharBinding(cm, e, ch) { return dispatchKey(cm, "'" + ch + "'", e, b => doHandleBinding(cm, b, true)) } let lastStoppedKey = null export function onKeyDown(e) { let cm = this if (e.target && e.target != cm.display.input.getField()) return cm.curOp.focus = activeElt(doc(cm)) if (signalDOMEvent(cm, e)) return // IE does strange things with escape. if (ie && ie_version < 11 && e.keyCode == 27) e.returnValue = false let code = e.keyCode cm.display.shift = code == 16 || e.shiftKey let handled = handleKeyBinding(cm, e) if (presto) { lastStoppedKey = handled ? code : null // Opera has no cut event... we try to at least catch the key combo if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey)) cm.replaceSelection("", null, "cut") } if (gecko && !mac && !handled && code == 46 && e.shiftKey && !e.ctrlKey && document.execCommand) document.execCommand("cut") // Turn mouse into crosshair when Alt is held on Mac. if (code == 18 && !/\bCodeMirror-crosshair\b/.test(cm.display.lineDiv.className)) showCrossHair(cm) } function showCrossHair(cm) { let lineDiv = cm.display.lineDiv addClass(lineDiv, "CodeMirror-crosshair") function up(e) { if (e.keyCode == 18 || !e.altKey) { rmClass(lineDiv, "CodeMirror-crosshair") off(document, "keyup", up) off(document, "mouseover", up) } } on(document, "keyup", up) on(document, "mouseover", up) } export function onKeyUp(e) { if (e.keyCode == 16) this.doc.sel.shift = false signalDOMEvent(this, e) } export function onKeyPress(e) { let cm = this if (e.target && e.target != cm.display.input.getField()) return if (eventInWidget(cm.display, e) || signalDOMEvent(cm, e) || e.ctrlKey && !e.altKey || mac && e.metaKey) return let keyCode = e.keyCode, charCode = e.charCode if (presto && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return} if ((presto && (!e.which || e.which < 10)) && handleKeyBinding(cm, e)) return let ch = String.fromCharCode(charCode == null ? keyCode : charCode) // Some browsers fire keypress events for backspace if (ch == "\x08") return if (handleCharBinding(cm, e, ch)) return cm.display.input.onKeyPress(e) }