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