645 lines
21 KiB
JavaScript
645 lines
21 KiB
JavaScript
export default function (CodeMirror, {
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cb,
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keyboardUp,
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keyboardDown,
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keyboardEnter
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}) {
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const HINT_ELEMENT_CLASS = 'CodeMirror-hint'
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const ACTIVE_HINT_ELEMENT_CLASS = 'CodeMirror-hint-active'
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// This is the old interface, kept around for now to stay
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// backwards-compatible.
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CodeMirror.showHint = function (cm, getHints, options) {
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if (!getHints) return cm.showHint(options)
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if (options && options.async) getHints.async = true
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const newOpts = { hint: getHints }
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if (options) for (const prop in options) newOpts[prop] = options[prop]
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return cm.showHint(newOpts)
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}
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CodeMirror.defineExtension('showHint', function (options) {
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options = parseOptions(this, this.getCursor('start'), options)
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const selections = this.listSelections()
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if (selections.length > 1) return
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// By default, don't allow completion when something is selected.
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// A hint function can have a `supportsSelection` property to
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// indicate that it can handle selections.
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if (this.somethingSelected()) {
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if (!options.hint.supportsSelection) return
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// Don't try with cross-line selections
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for (let i = 0; i < selections.length; i++) {
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if (selections[i].head.line != selections[i].anchor.line) return
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}
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}
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if (this.state.completionActive) this.state.completionActive.close()
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const completion = this.state.completionActive = new Completion(this, options)
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if (!completion.options.hint) return
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CodeMirror.signal(this, 'startCompletion', this)
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completion.update(true)
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cb && cb({ completion })
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})
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CodeMirror.defineExtension('closeHint', function () {
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if (this.state.completionActive) this.state.completionActive.close()
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})
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function Completion (cm, options) {
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this.cm = cm
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this.options = options
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this.widget = null
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this.debounce = 0
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this.tick = 0
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this.startPos = this.cm.getCursor('start')
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this.startLen = this.cm.getLine(this.startPos.line).length - this.cm.getSelection().length
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if (this.options.updateOnCursorActivity) {
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const self = this
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cm.on('cursorActivity', this.activityFunc = function () {
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self.cursorActivity()
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})
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}
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}
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const requestAnimationFrame = window.requestAnimationFrame || function (fn) {
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return setTimeout(fn, 1000 / 60)
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}
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const cancelAnimationFrame = window.cancelAnimationFrame || clearTimeout
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Completion.prototype = {
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close: function () {
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if (!this.active()) return
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this.cm.state.completionActive = null
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this.tick = null
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if (this.options.updateOnCursorActivity) {
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this.cm.off('cursorActivity', this.activityFunc)
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}
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if (this.widget && this.data) CodeMirror.signal(this.data, 'close')
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if (this.widget) this.widget.close()
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CodeMirror.signal(this.cm, 'endCompletion', this.cm)
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},
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active: function () {
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return this.cm.state.completionActive == this
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},
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pick: function (data, i) {
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const completion = data.list[i]; const self = this
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this.cm.operation(function () {
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if (completion.hint) {
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completion.hint(self.cm, data, completion)
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} else if (completion.field) {
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if (completion.text === 'in' || completion.text === 'like') {
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completion.text = ' ' + completion.text
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}
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let myString = self.cm.getValue().substring(data.from.ch, data.to.ch) + getText(completion)
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if (completion.text === 'has') {
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myString = getText(completion) + '(' + self.cm.getValue().substring(data.from.ch, data.to.ch) + ', ) '
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}
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self.cm.replaceRange(myString, data.from, data.to, 'complete')
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} else {
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self.cm.replaceRange(getText(completion), completion.from || data.from, completion.to || data.to, 'complete')
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}
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CodeMirror.signal(data, 'pick', completion)
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self.cm.scrollIntoView()
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})
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if (this.options.closeOnPick) {
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this.close()
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}
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},
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cursorActivity: function () {
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if (this.debounce) {
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cancelAnimationFrame(this.debounce)
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this.debounce = 0
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}
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let identStart = this.startPos
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if (this.data) {
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identStart = this.data.from
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}
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const pos = this.cm.getCursor(); const line = this.cm.getLine(pos.line)
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if (pos.line != this.startPos.line || line.length - pos.ch != this.startLen - this.startPos.ch ||
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pos.ch < identStart.ch || this.cm.somethingSelected() ||
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(!pos.ch || this.options.closeCharacters.test(line.charAt(pos.ch - 1)))) {
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this.close()
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} else {
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const self = this
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this.debounce = requestAnimationFrame(function () {
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self.update()
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})
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if (this.widget) this.widget.disable()
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}
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},
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update: function (first) {
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if (this.tick == null) return
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const self = this; const myTick = ++this.tick
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fetchHints(this.options.hint, this.cm, this.options, function (data) {
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if (self.tick == myTick) self.finishUpdate(data, first)
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})
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},
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finishUpdate: function (data, first) {
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if (this.data) CodeMirror.signal(this.data, 'update')
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const picked = (this.widget && this.widget.picked) || (first && this.options.completeSingle)
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if (this.widget) this.widget.close()
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this.data = data
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if (data && data.list.length) {
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if (picked && data.list.length == 1) {
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this.pick(data, 0)
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} else {
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this.widget = new Widget(this, data)
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CodeMirror.signal(data, 'shown')
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}
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}
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}
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}
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function parseOptions (cm, pos, options) {
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const editor = cm.options.hintOptions
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const out = {}
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for (var prop in defaultOptions) out[prop] = defaultOptions[prop]
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if (editor) {
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for (var prop in editor) {
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if (editor[prop] !== undefined) out[prop] = editor[prop]
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}
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}
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if (options) {
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for (var prop in options) {
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if (options[prop] !== undefined) out[prop] = options[prop]
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}
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}
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if (out.hint.resolve) out.hint = out.hint.resolve(cm, pos)
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return out
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}
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function getText (completion) {
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if (typeof completion == 'string') {
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return completion
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} else {
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return completion.text
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}
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}
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function buildKeyMap (completion, handle) {
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const baseMap = {
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Up: function () {
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handle.moveFocus(-1)
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},
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Down: function () {
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handle.moveFocus(1)
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},
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PageUp: function () {
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handle.moveFocus(-handle.menuSize() + 1, true)
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},
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PageDown: function () {
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handle.moveFocus(handle.menuSize() - 1, true)
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},
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Home: function () {
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handle.setFocus(0)
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},
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End: function () {
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handle.setFocus(handle.length - 1)
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},
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// Enter: handle.pick,
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// Tab: handle.pick,
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Tab: keyboardEnter,
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Enter: keyboardEnter,
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Esc: handle.close
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}
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const mac = /Mac/.test(navigator.platform)
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if (mac) {
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baseMap['Ctrl-P'] = function () {
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handle.moveFocus(-1)
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}
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baseMap['Ctrl-N'] = function () {
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handle.moveFocus(1)
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}
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}
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const custom = completion.options.customKeys
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const ourMap = custom ? {} : baseMap
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function addBinding (key, val) {
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let bound
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if (typeof val != 'string') {
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bound = function (cm) {
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return val(cm, handle)
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}
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}// This mechanism is deprecated
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else if (baseMap.hasOwnProperty(val)) {
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bound = baseMap[val]
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} else {
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bound = val
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}
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ourMap[key] = bound
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}
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if (custom) {
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for (var key in custom) {
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if (custom.hasOwnProperty(key)) {
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addBinding(key, custom[key])
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}
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}
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}
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const extra = completion.options.extraKeys
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if (extra) {
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for (var key in extra) {
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if (extra.hasOwnProperty(key)) {
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addBinding(key, extra[key])
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}
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}
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}
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return ourMap
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}
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function getHintElement (hintsElement, el) {
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while (el && el != hintsElement) {
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if (el.nodeName.toUpperCase() === 'LI' && el.parentNode == hintsElement) return el
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el = el.parentNode
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}
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}
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function Widget (completion, data) {
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this.id = 'cm-complete-' + Math.floor(Math.random(1e6))
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this.completion = completion
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this.data = data
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this.picked = false
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const widget = this; const cm = completion.cm
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const ownerDocument = cm.getInputField().ownerDocument
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const parentWindow = ownerDocument.defaultView || ownerDocument.parentWindow
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const hints = this.hints = ownerDocument.createElement('ul')
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// $(hints).append(`
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// <h1>lalallalla</h1>
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// `)
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hints.setAttribute('role', 'listbox')
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hints.setAttribute('aria-expanded', 'true')
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hints.id = this.id
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const theme = completion.cm.options.theme
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hints.className = 'CodeMirror-hints ' + theme
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this.selectedHint = data.selectedHint || 0
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const completions = data.list
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for (let i = 0; i < completions.length; ++i) {
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const elt = hints.appendChild(ownerDocument.createElement('li')); const cur = completions[i]
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let className = HINT_ELEMENT_CLASS + (i != this.selectedHint ? '' : ' ' + ACTIVE_HINT_ELEMENT_CLASS)
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if (cur.className != null) className = cur.className + ' ' + className
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elt.className = className
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if (i == this.selectedHint) elt.setAttribute('aria-selected', 'true')
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elt.id = this.id + '-' + i
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elt.setAttribute('role', 'option')
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if (cur.render) {
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cur.render(elt, data, cur)
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} else {
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elt.appendChild(ownerDocument.createTextNode(cur.displayText || getText(cur)))
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}
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elt.hintId = i
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}
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const container = completion.options.container || ownerDocument.body
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let pos = cm.cursorCoords(completion.options.alignWithWord ? data.from : null)
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let left = pos.left; let top = pos.bottom; let below = true
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let offsetLeft = 0; let offsetTop = 0
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if (container !== ownerDocument.body) {
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// We offset the cursor position because left and top are relative to the offsetParent's top left corner.
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const isContainerPositioned = ['absolute', 'relative', 'fixed'].indexOf(parentWindow.getComputedStyle(container).position) !== -1
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const offsetParent = isContainerPositioned ? container : container.offsetParent
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const offsetParentPosition = offsetParent.getBoundingClientRect()
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const bodyPosition = ownerDocument.body.getBoundingClientRect()
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offsetLeft = (offsetParentPosition.left - bodyPosition.left - offsetParent.scrollLeft)
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offsetTop = (offsetParentPosition.top - bodyPosition.top - offsetParent.scrollTop)
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}
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hints.style.left = (left - offsetLeft) + 'px'
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hints.style.top = (top - offsetTop) + 'px'
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// todo 隐藏codemirror自带的提示
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hints.style.display = 'none'
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// If we're at the edge of the screen, then we want the menu to appear on the left of the cursor.
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const winW = parentWindow.innerWidth || Math.max(ownerDocument.body.offsetWidth, ownerDocument.documentElement.offsetWidth)
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const winH = parentWindow.innerHeight || Math.max(ownerDocument.body.offsetHeight, ownerDocument.documentElement.offsetHeight)
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// 不用默认的DOM 下拉提示
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// container.appendChild(hints);
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hints.remove()
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cm.getInputField().setAttribute('aria-autocomplete', 'list')
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cm.getInputField().setAttribute('aria-owns', this.id)
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cm.getInputField().setAttribute('aria-activedescendant', this.id + '-' + this.selectedHint)
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let box = completion.options.moveOnOverlap ? hints.getBoundingClientRect() : new DOMRect()
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const scrolls = completion.options.paddingForScrollbar ? hints.scrollHeight > hints.clientHeight + 1 : false
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// Compute in the timeout to avoid reflow on init
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let startScroll
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setTimeout(function () {
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startScroll = cm.getScrollInfo()
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})
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const overlapY = box.bottom - winH
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if (overlapY > 0) {
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const height = box.bottom - box.top; const curTop = pos.top - (pos.bottom - box.top)
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if (curTop - height > 0) { // Fits above cursor
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hints.style.top = (top = pos.top - height - offsetTop) + 'px'
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below = false
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} else if (height > winH) {
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hints.style.height = (winH - 5) + 'px'
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hints.style.top = (top = pos.bottom - box.top - offsetTop) + 'px'
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const cursor = cm.getCursor()
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if (data.from.ch != cursor.ch) {
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pos = cm.cursorCoords(cursor)
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hints.style.left = (left = pos.left - offsetLeft) + 'px'
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box = hints.getBoundingClientRect()
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}
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}
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}
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let overlapX = box.right - winW
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if (scrolls) overlapX += cm.display.nativeBarWidth
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if (overlapX > 0) {
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if (box.right - box.left > winW) {
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hints.style.width = (winW - 5) + 'px'
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overlapX -= (box.right - box.left) - winW
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}
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hints.style.left = (left = Math.max(pos.left - overlapX - offsetLeft, 0)) + 'px'
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}
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if (scrolls) {
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for (let node = hints.firstChild; node; node = node.nextSibling) {
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node.style.paddingRight = cm.display.nativeBarWidth + 'px'
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}
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}
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// debugger
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cm.addKeyMap(this.keyMap = buildKeyMap(completion, {
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moveFocus: function (n, avoidWrap) {
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n === -1 ? keyboardUp && keyboardUp() : keyboardDown && keyboardDown()
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widget.changeActive(widget.selectedHint + n, avoidWrap)
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},
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setFocus: function (n) {
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widget.changeActive(n)
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},
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menuSize: function () {
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return widget.screenAmount()
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},
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length: completions.length,
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close: function () {
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completion.close()
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},
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pick: function () {
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widget.pick()
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},
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data: data
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}))
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if (completion.options.closeOnUnfocus) {
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let closingOnBlur
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cm.on('blur', this.onBlur = function () {
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closingOnBlur = setTimeout(function () {
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completion.close()
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}, 100)
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})
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cm.on('focus', this.onFocus = function () {
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clearTimeout(closingOnBlur)
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})
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}
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cm.on('scroll', this.onScroll = function () {
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const curScroll = cm.getScrollInfo(); const editor = cm.getWrapperElement().getBoundingClientRect()
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if (!startScroll) startScroll = cm.getScrollInfo()
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const newTop = top + startScroll.top - curScroll.top
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let point = newTop - (parentWindow.pageYOffset || (ownerDocument.documentElement || ownerDocument.body).scrollTop)
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if (!below) point += hints.offsetHeight
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if (point <= editor.top || point >= editor.bottom) return completion.close()
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hints.style.top = newTop + 'px'
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hints.style.left = (left + startScroll.left - curScroll.left) + 'px'
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})
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CodeMirror.on(hints, 'dblclick', function (e) {
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const t = getHintElement(hints, e.target || e.srcElement)
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if (t && t.hintId != null) {
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widget.changeActive(t.hintId)
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widget.pick()
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}
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})
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CodeMirror.on(hints, 'click', function (e) {
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const t = getHintElement(hints, e.target || e.srcElement)
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if (t && t.hintId != null) {
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widget.changeActive(t.hintId)
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if (completion.options.completeOnSingleClick) widget.pick()
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}
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})
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CodeMirror.on(hints, 'mousedown', function () {
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setTimeout(function () {
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cm.focus()
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}, 20)
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})
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// The first hint doesn't need to be scrolled to on init
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const selectedHintRange = this.getSelectedHintRange()
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if (selectedHintRange.from !== 0 || selectedHintRange.to !== 0) {
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this.scrollToActive()
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}
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CodeMirror.signal(data, 'select', completions[this.selectedHint], hints.childNodes[this.selectedHint])
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return true
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}
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Widget.prototype = {
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close: function () {
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if (this.completion.widget != this) return
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this.completion.widget = null
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if (this.hints.parentNode) this.hints.parentNode.removeChild(this.hints)
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this.completion.cm.removeKeyMap(this.keyMap)
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const input = this.completion.cm.getInputField()
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input.removeAttribute('aria-activedescendant')
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input.removeAttribute('aria-owns')
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const cm = this.completion.cm
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if (this.completion.options.closeOnUnfocus) {
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cm.off('blur', this.onBlur)
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cm.off('focus', this.onFocus)
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}
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cm.off('scroll', this.onScroll)
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},
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disable: function () {
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this.completion.cm.removeKeyMap(this.keyMap)
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const widget = this
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this.keyMap = {
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Enter: function () {
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widget.picked = true
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}
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}
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this.completion.cm.addKeyMap(this.keyMap)
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},
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pick: function () {
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this.completion.pick(this.data, this.selectedHint)
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},
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changeActive: function (i, avoidWrap) {
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if (i >= this.data.list.length) {
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i = avoidWrap ? this.data.list.length - 1 : 0
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} else if (i < 0) {
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i = avoidWrap ? 0 : this.data.list.length - 1
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}
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if (this.selectedHint == i) return
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let node = this.hints.childNodes[this.selectedHint]
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if (node) {
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node.className = node.className.replace(' ' + ACTIVE_HINT_ELEMENT_CLASS, '')
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node.removeAttribute('aria-selected')
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}
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node = this.hints.childNodes[this.selectedHint = i]
|
|
node.className += ' ' + ACTIVE_HINT_ELEMENT_CLASS
|
|
node.setAttribute('aria-selected', 'true')
|
|
this.completion.cm.getInputField().setAttribute('aria-activedescendant', node.id)
|
|
this.scrollToActive()
|
|
CodeMirror.signal(this.data, 'select', this.data.list[this.selectedHint], node)
|
|
},
|
|
|
|
scrollToActive: function () {
|
|
const selectedHintRange = this.getSelectedHintRange()
|
|
const node1 = this.hints.childNodes[selectedHintRange.from]
|
|
const node2 = this.hints.childNodes[selectedHintRange.to]
|
|
const firstNode = this.hints.firstChild
|
|
if (node1.offsetTop < this.hints.scrollTop) {
|
|
this.hints.scrollTop = node1.offsetTop - firstNode.offsetTop
|
|
} else if (node2.offsetTop + node2.offsetHeight > this.hints.scrollTop + this.hints.clientHeight) {
|
|
this.hints.scrollTop = node2.offsetTop + node2.offsetHeight - this.hints.clientHeight + firstNode.offsetTop
|
|
}
|
|
},
|
|
|
|
screenAmount: function () {
|
|
return Math.floor(this.hints.clientHeight / this.hints.firstChild.offsetHeight) || 1
|
|
},
|
|
|
|
getSelectedHintRange: function () {
|
|
const margin = this.completion.options.scrollMargin || 0
|
|
return {
|
|
from: Math.max(0, this.selectedHint - margin),
|
|
to: Math.min(this.data.list.length - 1, this.selectedHint + margin)
|
|
}
|
|
}
|
|
}
|
|
|
|
function applicableHelpers (cm, helpers) {
|
|
if (!cm.somethingSelected()) return helpers
|
|
const result = []
|
|
for (let i = 0; i < helpers.length; i++) {
|
|
if (helpers[i].supportsSelection) result.push(helpers[i])
|
|
}
|
|
return result
|
|
}
|
|
|
|
function fetchHints (hint, cm, options, callback) {
|
|
if (hint.async) {
|
|
hint(cm, callback, options)
|
|
} else {
|
|
const result = hint(cm, options)
|
|
if (result && result.then) {
|
|
result.then(callback)
|
|
} else {
|
|
callback(result)
|
|
}
|
|
}
|
|
}
|
|
|
|
function resolveAutoHints (cm, pos) {
|
|
const helpers = cm.getHelpers(pos, 'hint'); let words
|
|
if (helpers.length) {
|
|
const resolved = function (cm, callback, options) {
|
|
const app = applicableHelpers(cm, helpers)
|
|
|
|
function run (i) {
|
|
if (i == app.length) return callback(null)
|
|
fetchHints(app[i], cm, options, function (result) {
|
|
if (result && result.list.length > 0) {
|
|
callback(result)
|
|
} else {
|
|
run(i + 1)
|
|
}
|
|
})
|
|
}
|
|
|
|
run(0)
|
|
}
|
|
resolved.async = true
|
|
resolved.supportsSelection = true
|
|
return resolved
|
|
} else if (words = cm.getHelper(cm.getCursor(), 'hintWords')) {
|
|
return function (cm) {
|
|
return CodeMirror.hint.fromList(cm, { words: words })
|
|
}
|
|
} else if (CodeMirror.hint.anyword) {
|
|
return function (cm, options) {
|
|
return CodeMirror.hint.anyword(cm, options)
|
|
}
|
|
} else {
|
|
return function () {
|
|
}
|
|
}
|
|
}
|
|
|
|
CodeMirror.registerHelper('hint', 'auto', {
|
|
resolve: resolveAutoHints
|
|
})
|
|
|
|
CodeMirror.registerHelper('hint', 'fromList', function (cm, options) {
|
|
const cur = cm.getCursor(); const token = cm.getTokenAt(cur)
|
|
let term; let from = CodeMirror.Pos(cur.line, token.start); const to = cur
|
|
if (token.start < cur.ch && /\w/.test(token.string.charAt(cur.ch - token.start - 1))) {
|
|
term = token.string.substr(0, cur.ch - token.start)
|
|
} else {
|
|
term = ''
|
|
from = cur
|
|
}
|
|
const found = []
|
|
for (let i = 0; i < options.words.length; i++) {
|
|
const word = options.words[i]
|
|
if (word.slice(0, term.length) == term) {
|
|
found.push(word)
|
|
}
|
|
}
|
|
|
|
if (found.length) {
|
|
return {
|
|
list: found,
|
|
from: from,
|
|
to: to
|
|
}
|
|
}
|
|
})
|
|
|
|
CodeMirror.commands.autocomplete = CodeMirror.showHint
|
|
|
|
var defaultOptions = {
|
|
hint: CodeMirror.hint.auto,
|
|
completeSingle: true,
|
|
alignWithWord: true,
|
|
closeCharacters: /[\s()\[\]{};:>,]/,
|
|
|
|
closeOnPick: false,
|
|
closeOnUnfocus: false, // 阻止提示信息 失焦关闭
|
|
// closeOnUnfocus: false,
|
|
|
|
updateOnCursorActivity: true,
|
|
completeOnSingleClick: true,
|
|
container: null,
|
|
customKeys: null,
|
|
extraKeys: null,
|
|
paddingForScrollbar: true,
|
|
moveOnOverlap: true
|
|
}
|
|
CodeMirror.defineOption('hintOptions', null)
|
|
}
|