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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
}
}