528 lines
18 KiB
JavaScript
Executable File
528 lines
18 KiB
JavaScript
Executable File
import { operation, runInOp } from "../display/operations.js"
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import { prepareSelection } from "../display/selection.js"
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import { regChange } from "../display/view_tracking.js"
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import { applyTextInput, copyableRanges, disableBrowserMagic, handlePaste, hiddenTextarea, lastCopied, setLastCopied } from "./input.js"
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import { cmp, maxPos, minPos, Pos } from "../line/pos.js"
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import { getBetween, getLine, lineNo } from "../line/utils_line.js"
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import { findViewForLine, findViewIndex, mapFromLineView, nodeAndOffsetInLineMap } from "../measurement/position_measurement.js"
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import { replaceRange } from "../model/changes.js"
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import { simpleSelection } from "../model/selection.js"
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import { setSelection } from "../model/selection_updates.js"
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import { getBidiPartAt, getOrder } from "../util/bidi.js"
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import { android, chrome, gecko, ie_version } from "../util/browser.js"
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import { contains, range, removeChildrenAndAdd, selectInput } from "../util/dom.js"
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import { on, signalDOMEvent } from "../util/event.js"
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import { Delayed, lst, sel_dontScroll } from "../util/misc.js"
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// CONTENTEDITABLE INPUT STYLE
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export default class ContentEditableInput {
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constructor(cm) {
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this.cm = cm
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this.lastAnchorNode = this.lastAnchorOffset = this.lastFocusNode = this.lastFocusOffset = null
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this.polling = new Delayed()
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this.composing = null
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this.gracePeriod = false
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this.readDOMTimeout = null
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}
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init(display) {
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let input = this, cm = input.cm
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let div = input.div = display.lineDiv
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disableBrowserMagic(div, cm.options.spellcheck, cm.options.autocorrect, cm.options.autocapitalize)
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on(div, "paste", e => {
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if (signalDOMEvent(cm, e) || handlePaste(e, cm)) return
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// IE doesn't fire input events, so we schedule a read for the pasted content in this way
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if (ie_version <= 11) setTimeout(operation(cm, () => this.updateFromDOM()), 20)
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})
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on(div, "compositionstart", e => {
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this.composing = {data: e.data, done: false}
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})
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on(div, "compositionupdate", e => {
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if (!this.composing) this.composing = {data: e.data, done: false}
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})
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on(div, "compositionend", e => {
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if (this.composing) {
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if (e.data != this.composing.data) this.readFromDOMSoon()
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this.composing.done = true
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}
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})
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on(div, "touchstart", () => input.forceCompositionEnd())
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on(div, "input", () => {
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if (!this.composing) this.readFromDOMSoon()
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})
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function onCopyCut(e) {
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if (signalDOMEvent(cm, e)) return
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if (cm.somethingSelected()) {
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setLastCopied({lineWise: false, text: cm.getSelections()})
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if (e.type == "cut") cm.replaceSelection("", null, "cut")
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} else if (!cm.options.lineWiseCopyCut) {
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return
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} else {
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let ranges = copyableRanges(cm)
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setLastCopied({lineWise: true, text: ranges.text})
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if (e.type == "cut") {
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cm.operation(() => {
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cm.setSelections(ranges.ranges, 0, sel_dontScroll)
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cm.replaceSelection("", null, "cut")
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})
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}
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}
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if (e.clipboardData) {
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e.clipboardData.clearData()
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let content = lastCopied.text.join("\n")
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// iOS exposes the clipboard API, but seems to discard content inserted into it
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e.clipboardData.setData("Text", content)
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if (e.clipboardData.getData("Text") == content) {
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e.preventDefault()
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return
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}
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}
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// Old-fashioned briefly-focus-a-textarea hack
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let kludge = hiddenTextarea(), te = kludge.firstChild
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cm.display.lineSpace.insertBefore(kludge, cm.display.lineSpace.firstChild)
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te.value = lastCopied.text.join("\n")
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let hadFocus = document.activeElement
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selectInput(te)
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setTimeout(() => {
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cm.display.lineSpace.removeChild(kludge)
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hadFocus.focus()
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if (hadFocus == div) input.showPrimarySelection()
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}, 50)
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}
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on(div, "copy", onCopyCut)
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on(div, "cut", onCopyCut)
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}
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prepareSelection() {
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let result = prepareSelection(this.cm, false)
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result.focus = this.cm.state.focused
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return result
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}
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showSelection(info, takeFocus) {
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if (!info || !this.cm.display.view.length) return
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if (info.focus || takeFocus) this.showPrimarySelection()
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this.showMultipleSelections(info)
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}
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getSelection() {
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return this.cm.display.wrapper.ownerDocument.getSelection()
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}
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showPrimarySelection() {
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let sel = this.getSelection(), cm = this.cm, prim = cm.doc.sel.primary()
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let from = prim.from(), to = prim.to()
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if (cm.display.viewTo == cm.display.viewFrom || from.line >= cm.display.viewTo || to.line < cm.display.viewFrom) {
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sel.removeAllRanges()
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return
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}
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let curAnchor = domToPos(cm, sel.anchorNode, sel.anchorOffset)
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let curFocus = domToPos(cm, sel.focusNode, sel.focusOffset)
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if (curAnchor && !curAnchor.bad && curFocus && !curFocus.bad &&
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cmp(minPos(curAnchor, curFocus), from) == 0 &&
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cmp(maxPos(curAnchor, curFocus), to) == 0)
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return
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let view = cm.display.view
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let start = (from.line >= cm.display.viewFrom && posToDOM(cm, from)) ||
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{node: view[0].measure.map[2], offset: 0}
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let end = to.line < cm.display.viewTo && posToDOM(cm, to)
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if (!end) {
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let measure = view[view.length - 1].measure
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let map = measure.maps ? measure.maps[measure.maps.length - 1] : measure.map
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end = {node: map[map.length - 1], offset: map[map.length - 2] - map[map.length - 3]}
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}
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if (!start || !end) {
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sel.removeAllRanges()
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return
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}
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let old = sel.rangeCount && sel.getRangeAt(0), rng
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try { rng = range(start.node, start.offset, end.offset, end.node) }
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catch(e) {} // Our model of the DOM might be outdated, in which case the range we try to set can be impossible
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if (rng) {
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if (!gecko && cm.state.focused) {
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sel.collapse(start.node, start.offset)
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if (!rng.collapsed) {
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sel.removeAllRanges()
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sel.addRange(rng)
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}
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} else {
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sel.removeAllRanges()
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sel.addRange(rng)
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}
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if (old && sel.anchorNode == null) sel.addRange(old)
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else if (gecko) this.startGracePeriod()
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}
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this.rememberSelection()
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}
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startGracePeriod() {
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clearTimeout(this.gracePeriod)
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this.gracePeriod = setTimeout(() => {
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this.gracePeriod = false
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if (this.selectionChanged())
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this.cm.operation(() => this.cm.curOp.selectionChanged = true)
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}, 20)
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}
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showMultipleSelections(info) {
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removeChildrenAndAdd(this.cm.display.cursorDiv, info.cursors)
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removeChildrenAndAdd(this.cm.display.selectionDiv, info.selection)
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}
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rememberSelection() {
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let sel = this.getSelection()
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this.lastAnchorNode = sel.anchorNode; this.lastAnchorOffset = sel.anchorOffset
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this.lastFocusNode = sel.focusNode; this.lastFocusOffset = sel.focusOffset
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}
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selectionInEditor() {
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let sel = this.getSelection()
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if (!sel.rangeCount) return false
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let node = sel.getRangeAt(0).commonAncestorContainer
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return contains(this.div, node)
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}
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focus() {
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if (this.cm.options.readOnly != "nocursor") {
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if (!this.selectionInEditor())
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this.showSelection(this.prepareSelection(), true)
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this.div.focus()
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}
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}
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blur() { this.div.blur() }
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getField() { return this.div }
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supportsTouch() { return true }
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receivedFocus() {
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let input = this
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if (this.selectionInEditor())
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this.pollSelection()
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else
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runInOp(this.cm, () => input.cm.curOp.selectionChanged = true)
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function poll() {
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if (input.cm.state.focused) {
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input.pollSelection()
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input.polling.set(input.cm.options.pollInterval, poll)
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}
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}
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this.polling.set(this.cm.options.pollInterval, poll)
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}
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selectionChanged() {
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let sel = this.getSelection()
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return sel.anchorNode != this.lastAnchorNode || sel.anchorOffset != this.lastAnchorOffset ||
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sel.focusNode != this.lastFocusNode || sel.focusOffset != this.lastFocusOffset
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}
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pollSelection() {
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if (this.readDOMTimeout != null || this.gracePeriod || !this.selectionChanged()) return
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let sel = this.getSelection(), cm = this.cm
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// On Android Chrome (version 56, at least), backspacing into an
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// uneditable block element will put the cursor in that element,
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// and then, because it's not editable, hide the virtual keyboard.
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// Because Android doesn't allow us to actually detect backspace
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// presses in a sane way, this code checks for when that happens
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// and simulates a backspace press in this case.
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if (android && chrome && this.cm.display.gutterSpecs.length && isInGutter(sel.anchorNode)) {
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this.cm.triggerOnKeyDown({type: "keydown", keyCode: 8, preventDefault: Math.abs})
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this.blur()
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this.focus()
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return
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}
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if (this.composing) return
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this.rememberSelection()
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let anchor = domToPos(cm, sel.anchorNode, sel.anchorOffset)
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let head = domToPos(cm, sel.focusNode, sel.focusOffset)
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if (anchor && head) runInOp(cm, () => {
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setSelection(cm.doc, simpleSelection(anchor, head), sel_dontScroll)
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if (anchor.bad || head.bad) cm.curOp.selectionChanged = true
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})
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}
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pollContent() {
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if (this.readDOMTimeout != null) {
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clearTimeout(this.readDOMTimeout)
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this.readDOMTimeout = null
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}
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let cm = this.cm, display = cm.display, sel = cm.doc.sel.primary()
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let from = sel.from(), to = sel.to()
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if (from.ch == 0 && from.line > cm.firstLine())
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from = Pos(from.line - 1, getLine(cm.doc, from.line - 1).length)
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if (to.ch == getLine(cm.doc, to.line).text.length && to.line < cm.lastLine())
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to = Pos(to.line + 1, 0)
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if (from.line < display.viewFrom || to.line > display.viewTo - 1) return false
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let fromIndex, fromLine, fromNode
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if (from.line == display.viewFrom || (fromIndex = findViewIndex(cm, from.line)) == 0) {
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fromLine = lineNo(display.view[0].line)
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fromNode = display.view[0].node
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} else {
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fromLine = lineNo(display.view[fromIndex].line)
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fromNode = display.view[fromIndex - 1].node.nextSibling
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}
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let toIndex = findViewIndex(cm, to.line)
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let toLine, toNode
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if (toIndex == display.view.length - 1) {
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toLine = display.viewTo - 1
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toNode = display.lineDiv.lastChild
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} else {
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toLine = lineNo(display.view[toIndex + 1].line) - 1
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toNode = display.view[toIndex + 1].node.previousSibling
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}
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if (!fromNode) return false
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let newText = cm.doc.splitLines(domTextBetween(cm, fromNode, toNode, fromLine, toLine))
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let oldText = getBetween(cm.doc, Pos(fromLine, 0), Pos(toLine, getLine(cm.doc, toLine).text.length))
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while (newText.length > 1 && oldText.length > 1) {
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if (lst(newText) == lst(oldText)) { newText.pop(); oldText.pop(); toLine-- }
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else if (newText[0] == oldText[0]) { newText.shift(); oldText.shift(); fromLine++ }
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else break
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}
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let cutFront = 0, cutEnd = 0
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let newTop = newText[0], oldTop = oldText[0], maxCutFront = Math.min(newTop.length, oldTop.length)
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while (cutFront < maxCutFront && newTop.charCodeAt(cutFront) == oldTop.charCodeAt(cutFront))
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++cutFront
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let newBot = lst(newText), oldBot = lst(oldText)
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let maxCutEnd = Math.min(newBot.length - (newText.length == 1 ? cutFront : 0),
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oldBot.length - (oldText.length == 1 ? cutFront : 0))
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while (cutEnd < maxCutEnd &&
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newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1))
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++cutEnd
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// Try to move start of change to start of selection if ambiguous
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if (newText.length == 1 && oldText.length == 1 && fromLine == from.line) {
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while (cutFront && cutFront > from.ch &&
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newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1)) {
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cutFront--
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cutEnd++
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}
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}
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newText[newText.length - 1] = newBot.slice(0, newBot.length - cutEnd).replace(/^\u200b+/, "")
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newText[0] = newText[0].slice(cutFront).replace(/\u200b+$/, "")
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let chFrom = Pos(fromLine, cutFront)
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let chTo = Pos(toLine, oldText.length ? lst(oldText).length - cutEnd : 0)
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if (newText.length > 1 || newText[0] || cmp(chFrom, chTo)) {
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replaceRange(cm.doc, newText, chFrom, chTo, "+input")
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return true
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}
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}
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ensurePolled() {
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this.forceCompositionEnd()
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}
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reset() {
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this.forceCompositionEnd()
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}
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forceCompositionEnd() {
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if (!this.composing) return
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clearTimeout(this.readDOMTimeout)
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this.composing = null
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this.updateFromDOM()
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this.div.blur()
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this.div.focus()
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}
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readFromDOMSoon() {
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if (this.readDOMTimeout != null) return
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this.readDOMTimeout = setTimeout(() => {
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this.readDOMTimeout = null
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if (this.composing) {
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if (this.composing.done) this.composing = null
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else return
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}
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this.updateFromDOM()
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}, 80)
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}
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updateFromDOM() {
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if (this.cm.isReadOnly() || !this.pollContent())
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runInOp(this.cm, () => regChange(this.cm))
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}
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setUneditable(node) {
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node.contentEditable = "false"
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}
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onKeyPress(e) {
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if (e.charCode == 0 || this.composing) return
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e.preventDefault()
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if (!this.cm.isReadOnly())
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operation(this.cm, applyTextInput)(this.cm, String.fromCharCode(e.charCode == null ? e.keyCode : e.charCode), 0)
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}
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readOnlyChanged(val) {
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this.div.contentEditable = String(val != "nocursor")
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}
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onContextMenu() {}
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resetPosition() {}
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}
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ContentEditableInput.prototype.needsContentAttribute = true
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function posToDOM(cm, pos) {
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let view = findViewForLine(cm, pos.line)
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if (!view || view.hidden) return null
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let line = getLine(cm.doc, pos.line)
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let info = mapFromLineView(view, line, pos.line)
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let order = getOrder(line, cm.doc.direction), side = "left"
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if (order) {
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let partPos = getBidiPartAt(order, pos.ch)
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side = partPos % 2 ? "right" : "left"
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}
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let result = nodeAndOffsetInLineMap(info.map, pos.ch, side)
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result.offset = result.collapse == "right" ? result.end : result.start
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return result
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}
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function isInGutter(node) {
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for (let scan = node; scan; scan = scan.parentNode)
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if (/CodeMirror-gutter-wrapper/.test(scan.className)) return true
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return false
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}
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function badPos(pos, bad) { if (bad) pos.bad = true; return pos }
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function domTextBetween(cm, from, to, fromLine, toLine) {
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let text = "", closing = false, lineSep = cm.doc.lineSeparator(), extraLinebreak = false
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function recognizeMarker(id) { return marker => marker.id == id }
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function close() {
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if (closing) {
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text += lineSep
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if (extraLinebreak) text += lineSep
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closing = extraLinebreak = false
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}
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}
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function addText(str) {
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if (str) {
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close()
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text += str
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}
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}
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function walk(node) {
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if (node.nodeType == 1) {
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let cmText = node.getAttribute("cm-text")
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if (cmText) {
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addText(cmText)
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return
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}
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let markerID = node.getAttribute("cm-marker"), range
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if (markerID) {
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let found = cm.findMarks(Pos(fromLine, 0), Pos(toLine + 1, 0), recognizeMarker(+markerID))
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if (found.length && (range = found[0].find(0)))
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addText(getBetween(cm.doc, range.from, range.to).join(lineSep))
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return
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}
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if (node.getAttribute("contenteditable") == "false") return
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let isBlock = /^(pre|div|p|li|table|br)$/i.test(node.nodeName)
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if (!/^br$/i.test(node.nodeName) && node.textContent.length == 0) return
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if (isBlock) close()
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for (let i = 0; i < node.childNodes.length; i++)
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walk(node.childNodes[i])
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if (/^(pre|p)$/i.test(node.nodeName)) extraLinebreak = true
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if (isBlock) closing = true
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} else if (node.nodeType == 3) {
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addText(node.nodeValue.replace(/\u200b/g, "").replace(/\u00a0/g, " "))
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}
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}
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for (;;) {
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walk(from)
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if (from == to) break
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from = from.nextSibling
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extraLinebreak = false
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}
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return text
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}
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function domToPos(cm, node, offset) {
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let lineNode
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if (node == cm.display.lineDiv) {
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lineNode = cm.display.lineDiv.childNodes[offset]
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if (!lineNode) return badPos(cm.clipPos(Pos(cm.display.viewTo - 1)), true)
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node = null; offset = 0
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} else {
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for (lineNode = node;; lineNode = lineNode.parentNode) {
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if (!lineNode || lineNode == cm.display.lineDiv) return null
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if (lineNode.parentNode && lineNode.parentNode == cm.display.lineDiv) break
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}
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}
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|
for (let i = 0; i < cm.display.view.length; i++) {
|
|
let lineView = cm.display.view[i]
|
|
if (lineView.node == lineNode)
|
|
return locateNodeInLineView(lineView, node, offset)
|
|
}
|
|
}
|
|
|
|
function locateNodeInLineView(lineView, node, offset) {
|
|
let wrapper = lineView.text.firstChild, bad = false
|
|
if (!node || !contains(wrapper, node)) return badPos(Pos(lineNo(lineView.line), 0), true)
|
|
if (node == wrapper) {
|
|
bad = true
|
|
node = wrapper.childNodes[offset]
|
|
offset = 0
|
|
if (!node) {
|
|
let line = lineView.rest ? lst(lineView.rest) : lineView.line
|
|
return badPos(Pos(lineNo(line), line.text.length), bad)
|
|
}
|
|
}
|
|
|
|
let textNode = node.nodeType == 3 ? node : null, topNode = node
|
|
if (!textNode && node.childNodes.length == 1 && node.firstChild.nodeType == 3) {
|
|
textNode = node.firstChild
|
|
if (offset) offset = textNode.nodeValue.length
|
|
}
|
|
while (topNode.parentNode != wrapper) topNode = topNode.parentNode
|
|
let measure = lineView.measure, maps = measure.maps
|
|
|
|
function find(textNode, topNode, offset) {
|
|
for (let i = -1; i < (maps ? maps.length : 0); i++) {
|
|
let map = i < 0 ? measure.map : maps[i]
|
|
for (let j = 0; j < map.length; j += 3) {
|
|
let curNode = map[j + 2]
|
|
if (curNode == textNode || curNode == topNode) {
|
|
let line = lineNo(i < 0 ? lineView.line : lineView.rest[i])
|
|
let ch = map[j] + offset
|
|
if (offset < 0 || curNode != textNode) ch = map[j + (offset ? 1 : 0)]
|
|
return Pos(line, ch)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
let found = find(textNode, topNode, offset)
|
|
if (found) return badPos(found, bad)
|
|
|
|
// FIXME this is all really shaky. might handle the few cases it needs to handle, but likely to cause problems
|
|
for (let after = topNode.nextSibling, dist = textNode ? textNode.nodeValue.length - offset : 0; after; after = after.nextSibling) {
|
|
found = find(after, after.firstChild, 0)
|
|
if (found)
|
|
return badPos(Pos(found.line, found.ch - dist), bad)
|
|
else
|
|
dist += after.textContent.length
|
|
}
|
|
for (let before = topNode.previousSibling, dist = offset; before; before = before.previousSibling) {
|
|
found = find(before, before.firstChild, -1)
|
|
if (found)
|
|
return badPos(Pos(found.line, found.ch + dist), bad)
|
|
else
|
|
dist += before.textContent.length
|
|
}
|
|
}
|