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import { deleteNearSelection } from "./deleteNearSelection.js"
import { commands } from "./commands.js"
import { attachDoc } from "../model/document_data.js"
import { activeElt, addClass, rmClass, root, win } from "../util/dom.js"
import { eventMixin, signal } from "../util/event.js"
import { getLineStyles, getContextBefore, takeToken } from "../line/highlight.js"
import { indentLine } from "../input/indent.js"
import { triggerElectric } from "../input/input.js"
import { onKeyDown, onKeyPress, onKeyUp } from "./key_events.js"
import { onMouseDown } from "./mouse_events.js"
import { getKeyMap } from "../input/keymap.js"
import { endOfLine, moveLogically, moveVisually } from "../input/movement.js"
import { endOperation, methodOp, operation, runInOp, startOperation } from "../display/operations.js"
import { clipLine, clipPos, equalCursorPos, Pos } from "../line/pos.js"
import { charCoords, charWidth, clearCaches, clearLineMeasurementCache, coordsChar, cursorCoords, displayHeight, displayWidth, estimateLineHeights, fromCoordSystem, intoCoordSystem, scrollGap, textHeight } from "../measurement/position_measurement.js"
import { Range } from "../model/selection.js"
import { replaceOneSelection, skipAtomic } from "../model/selection_updates.js"
import { addToScrollTop, ensureCursorVisible, scrollIntoView, scrollToCoords, scrollToCoordsRange, scrollToRange } from "../display/scrolling.js"
import { heightAtLine } from "../line/spans.js"
import { updateGutterSpace } from "../display/update_display.js"
import { indexOf, insertSorted, isWordChar, sel_dontScroll, sel_move } from "../util/misc.js"
import { signalLater } from "../util/operation_group.js"
import { getLine, isLine, lineAtHeight } from "../line/utils_line.js"
import { regChange, regLineChange } from "../display/view_tracking.js"
// The publicly visible API. Note that methodOp(f) means
// 'wrap f in an operation, performed on its `this` parameter'.
// This is not the complete set of editor methods. Most of the
// methods defined on the Doc type are also injected into
// CodeMirror.prototype, for backwards compatibility and
// convenience.
export default function(CodeMirror) {
let optionHandlers = CodeMirror.optionHandlers
let helpers = CodeMirror.helpers = {}
CodeMirror.prototype = {
constructor: CodeMirror,
focus: function(){win(this).focus(); this.display.input.focus()},
setOption: function(option, value) {
let options = this.options, old = options[option]
if (options[option] == value && option != "mode") return
options[option] = value
if (optionHandlers.hasOwnProperty(option))
operation(this, optionHandlers[option])(this, value, old)
signal(this, "optionChange", this, option)
},
getOption: function(option) {return this.options[option]},
getDoc: function() {return this.doc},
addKeyMap: function(map, bottom) {
this.state.keyMaps[bottom ? "push" : "unshift"](getKeyMap(map))
},
removeKeyMap: function(map) {
let maps = this.state.keyMaps
for (let i = 0; i < maps.length; ++i)
if (maps[i] == map || maps[i].name == map) {
maps.splice(i, 1)
return true
}
},
addOverlay: methodOp(function(spec, options) {
let mode = spec.token ? spec : CodeMirror.getMode(this.options, spec)
if (mode.startState) throw new Error("Overlays may not be stateful.")
insertSorted(this.state.overlays,
{mode: mode, modeSpec: spec, opaque: options && options.opaque,
priority: (options && options.priority) || 0},
overlay => overlay.priority)
this.state.modeGen++
regChange(this)
}),
removeOverlay: methodOp(function(spec) {
let overlays = this.state.overlays
for (let i = 0; i < overlays.length; ++i) {
let cur = overlays[i].modeSpec
if (cur == spec || typeof spec == "string" && cur.name == spec) {
overlays.splice(i, 1)
this.state.modeGen++
regChange(this)
return
}
}
}),
indentLine: methodOp(function(n, dir, aggressive) {
if (typeof dir != "string" && typeof dir != "number") {
if (dir == null) dir = this.options.smartIndent ? "smart" : "prev"
else dir = dir ? "add" : "subtract"
}
if (isLine(this.doc, n)) indentLine(this, n, dir, aggressive)
}),
indentSelection: methodOp(function(how) {
let ranges = this.doc.sel.ranges, end = -1
for (let i = 0; i < ranges.length; i++) {
let range = ranges[i]
if (!range.empty()) {
let from = range.from(), to = range.to()
let start = Math.max(end, from.line)
end = Math.min(this.lastLine(), to.line - (to.ch ? 0 : 1)) + 1
for (let j = start; j < end; ++j)
indentLine(this, j, how)
let newRanges = this.doc.sel.ranges
if (from.ch == 0 && ranges.length == newRanges.length && newRanges[i].from().ch > 0)
replaceOneSelection(this.doc, i, new Range(from, newRanges[i].to()), sel_dontScroll)
} else if (range.head.line > end) {
indentLine(this, range.head.line, how, true)
end = range.head.line
if (i == this.doc.sel.primIndex) ensureCursorVisible(this)
}
}
}),
// Fetch the parser token for a given character. Useful for hacks
// that want to inspect the mode state (say, for completion).
getTokenAt: function(pos, precise) {
return takeToken(this, pos, precise)
},
getLineTokens: function(line, precise) {
return takeToken(this, Pos(line), precise, true)
},
getTokenTypeAt: function(pos) {
pos = clipPos(this.doc, pos)
let styles = getLineStyles(this, getLine(this.doc, pos.line))
let before = 0, after = (styles.length - 1) / 2, ch = pos.ch
let type
if (ch == 0) type = styles[2]
else for (;;) {
let mid = (before + after) >> 1
if ((mid ? styles[mid * 2 - 1] : 0) >= ch) after = mid
else if (styles[mid * 2 + 1] < ch) before = mid + 1
else { type = styles[mid * 2 + 2]; break }
}
let cut = type ? type.indexOf("overlay ") : -1
return cut < 0 ? type : cut == 0 ? null : type.slice(0, cut - 1)
},
getModeAt: function(pos) {
let mode = this.doc.mode
if (!mode.innerMode) return mode
return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode
},
getHelper: function(pos, type) {
return this.getHelpers(pos, type)[0]
},
getHelpers: function(pos, type) {
let found = []
if (!helpers.hasOwnProperty(type)) return found
let help = helpers[type], mode = this.getModeAt(pos)
if (typeof mode[type] == "string") {
if (help[mode[type]]) found.push(help[mode[type]])
} else if (mode[type]) {
for (let i = 0; i < mode[type].length; i++) {
let val = help[mode[type][i]]
if (val) found.push(val)
}
} else if (mode.helperType && help[mode.helperType]) {
found.push(help[mode.helperType])
} else if (help[mode.name]) {
found.push(help[mode.name])
}
for (let i = 0; i < help._global.length; i++) {
let cur = help._global[i]
if (cur.pred(mode, this) && indexOf(found, cur.val) == -1)
found.push(cur.val)
}
return found
},
getStateAfter: function(line, precise) {
let doc = this.doc
line = clipLine(doc, line == null ? doc.first + doc.size - 1: line)
return getContextBefore(this, line + 1, precise).state
},
cursorCoords: function(start, mode) {
let pos, range = this.doc.sel.primary()
if (start == null) pos = range.head
else if (typeof start == "object") pos = clipPos(this.doc, start)
else pos = start ? range.from() : range.to()
return cursorCoords(this, pos, mode || "page")
},
charCoords: function(pos, mode) {
return charCoords(this, clipPos(this.doc, pos), mode || "page")
},
coordsChar: function(coords, mode) {
coords = fromCoordSystem(this, coords, mode || "page")
return coordsChar(this, coords.left, coords.top)
},
lineAtHeight: function(height, mode) {
height = fromCoordSystem(this, {top: height, left: 0}, mode || "page").top
return lineAtHeight(this.doc, height + this.display.viewOffset)
},
heightAtLine: function(line, mode, includeWidgets) {
let end = false, lineObj
if (typeof line == "number") {
let last = this.doc.first + this.doc.size - 1
if (line < this.doc.first) line = this.doc.first
else if (line > last) { line = last; end = true }
lineObj = getLine(this.doc, line)
} else {
lineObj = line
}
return intoCoordSystem(this, lineObj, {top: 0, left: 0}, mode || "page", includeWidgets || end).top +
(end ? this.doc.height - heightAtLine(lineObj) : 0)
},
defaultTextHeight: function() { return textHeight(this.display) },
defaultCharWidth: function() { return charWidth(this.display) },
getViewport: function() { return {from: this.display.viewFrom, to: this.display.viewTo}},
addWidget: function(pos, node, scroll, vert, horiz) {
let display = this.display
pos = cursorCoords(this, clipPos(this.doc, pos))
let top = pos.bottom, left = pos.left
node.style.position = "absolute"
node.setAttribute("cm-ignore-events", "true")
this.display.input.setUneditable(node)
display.sizer.appendChild(node)
if (vert == "over") {
top = pos.top
} else if (vert == "above" || vert == "near") {
let vspace = Math.max(display.wrapper.clientHeight, this.doc.height),
hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth)
// Default to positioning above (if specified and possible); otherwise default to positioning below
if ((vert == 'above' || pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight)
top = pos.top - node.offsetHeight
else if (pos.bottom + node.offsetHeight <= vspace)
top = pos.bottom
if (left + node.offsetWidth > hspace)
left = hspace - node.offsetWidth
}
node.style.top = top + "px"
node.style.left = node.style.right = ""
if (horiz == "right") {
left = display.sizer.clientWidth - node.offsetWidth
node.style.right = "0px"
} else {
if (horiz == "left") left = 0
else if (horiz == "middle") left = (display.sizer.clientWidth - node.offsetWidth) / 2
node.style.left = left + "px"
}
if (scroll)
scrollIntoView(this, {left, top, right: left + node.offsetWidth, bottom: top + node.offsetHeight})
},
triggerOnKeyDown: methodOp(onKeyDown),
triggerOnKeyPress: methodOp(onKeyPress),
triggerOnKeyUp: onKeyUp,
triggerOnMouseDown: methodOp(onMouseDown),
execCommand: function(cmd) {
if (commands.hasOwnProperty(cmd))
return commands[cmd].call(null, this)
},
triggerElectric: methodOp(function(text) { triggerElectric(this, text) }),
findPosH: function(from, amount, unit, visually) {
let dir = 1
if (amount < 0) { dir = -1; amount = -amount }
let cur = clipPos(this.doc, from)
for (let i = 0; i < amount; ++i) {
cur = findPosH(this.doc, cur, dir, unit, visually)
if (cur.hitSide) break
}
return cur
},
moveH: methodOp(function(dir, unit) {
this.extendSelectionsBy(range => {
if (this.display.shift || this.doc.extend || range.empty())
return findPosH(this.doc, range.head, dir, unit, this.options.rtlMoveVisually)
else
return dir < 0 ? range.from() : range.to()
}, sel_move)
}),
deleteH: methodOp(function(dir, unit) {
let sel = this.doc.sel, doc = this.doc
if (sel.somethingSelected())
doc.replaceSelection("", null, "+delete")
else
deleteNearSelection(this, range => {
let other = findPosH(doc, range.head, dir, unit, false)
return dir < 0 ? {from: other, to: range.head} : {from: range.head, to: other}
})
}),
findPosV: function(from, amount, unit, goalColumn) {
let dir = 1, x = goalColumn
if (amount < 0) { dir = -1; amount = -amount }
let cur = clipPos(this.doc, from)
for (let i = 0; i < amount; ++i) {
let coords = cursorCoords(this, cur, "div")
if (x == null) x = coords.left
else coords.left = x
cur = findPosV(this, coords, dir, unit)
if (cur.hitSide) break
}
return cur
},
moveV: methodOp(function(dir, unit) {
let doc = this.doc, goals = []
let collapse = !this.display.shift && !doc.extend && doc.sel.somethingSelected()
doc.extendSelectionsBy(range => {
if (collapse)
return dir < 0 ? range.from() : range.to()
let headPos = cursorCoords(this, range.head, "div")
if (range.goalColumn != null) headPos.left = range.goalColumn
goals.push(headPos.left)
let pos = findPosV(this, headPos, dir, unit)
if (unit == "page" && range == doc.sel.primary())
addToScrollTop(this, charCoords(this, pos, "div").top - headPos.top)
return pos
}, sel_move)
if (goals.length) for (let i = 0; i < doc.sel.ranges.length; i++)
doc.sel.ranges[i].goalColumn = goals[i]
}),
// Find the word at the given position (as returned by coordsChar).
findWordAt: function(pos) {
let doc = this.doc, line = getLine(doc, pos.line).text
let start = pos.ch, end = pos.ch
if (line) {
let helper = this.getHelper(pos, "wordChars")
if ((pos.sticky == "before" || end == line.length) && start) --start; else ++end
let startChar = line.charAt(start)
let check = isWordChar(startChar, helper)
? ch => isWordChar(ch, helper)
: /\s/.test(startChar) ? ch => /\s/.test(ch)
: ch => (!/\s/.test(ch) && !isWordChar(ch))
while (start > 0 && check(line.charAt(start - 1))) --start
while (end < line.length && check(line.charAt(end))) ++end
}
return new Range(Pos(pos.line, start), Pos(pos.line, end))
},
toggleOverwrite: function(value) {
if (value != null && value == this.state.overwrite) return
if (this.state.overwrite = !this.state.overwrite)
addClass(this.display.cursorDiv, "CodeMirror-overwrite")
else
rmClass(this.display.cursorDiv, "CodeMirror-overwrite")
signal(this, "overwriteToggle", this, this.state.overwrite)
},
hasFocus: function() { return this.display.input.getField() == activeElt(root(this)) },
isReadOnly: function() { return !!(this.options.readOnly || this.doc.cantEdit) },
scrollTo: methodOp(function (x, y) { scrollToCoords(this, x, y) }),
getScrollInfo: function() {
let scroller = this.display.scroller
return {left: scroller.scrollLeft, top: scroller.scrollTop,
height: scroller.scrollHeight - scrollGap(this) - this.display.barHeight,
width: scroller.scrollWidth - scrollGap(this) - this.display.barWidth,
clientHeight: displayHeight(this), clientWidth: displayWidth(this)}
},
scrollIntoView: methodOp(function(range, margin) {
if (range == null) {
range = {from: this.doc.sel.primary().head, to: null}
if (margin == null) margin = this.options.cursorScrollMargin
} else if (typeof range == "number") {
range = {from: Pos(range, 0), to: null}
} else if (range.from == null) {
range = {from: range, to: null}
}
if (!range.to) range.to = range.from
range.margin = margin || 0
if (range.from.line != null) {
scrollToRange(this, range)
} else {
scrollToCoordsRange(this, range.from, range.to, range.margin)
}
}),
setSize: methodOp(function(width, height) {
let interpret = val => typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val
if (width != null) this.display.wrapper.style.width = interpret(width)
if (height != null) this.display.wrapper.style.height = interpret(height)
if (this.options.lineWrapping) clearLineMeasurementCache(this)
let lineNo = this.display.viewFrom
this.doc.iter(lineNo, this.display.viewTo, line => {
if (line.widgets) for (let i = 0; i < line.widgets.length; i++)
if (line.widgets[i].noHScroll) { regLineChange(this, lineNo, "widget"); break }
++lineNo
})
this.curOp.forceUpdate = true
signal(this, "refresh", this)
}),
operation: function(f){return runInOp(this, f)},
startOperation: function(){return startOperation(this)},
endOperation: function(){return endOperation(this)},
refresh: methodOp(function() {
let oldHeight = this.display.cachedTextHeight
regChange(this)
this.curOp.forceUpdate = true
clearCaches(this)
scrollToCoords(this, this.doc.scrollLeft, this.doc.scrollTop)
updateGutterSpace(this.display)
if (oldHeight == null || Math.abs(oldHeight - textHeight(this.display)) > .5 || this.options.lineWrapping)
estimateLineHeights(this)
signal(this, "refresh", this)
}),
swapDoc: methodOp(function(doc) {
let old = this.doc
old.cm = null
// Cancel the current text selection if any (#5821)
if (this.state.selectingText) this.state.selectingText()
attachDoc(this, doc)
clearCaches(this)
this.display.input.reset()
scrollToCoords(this, doc.scrollLeft, doc.scrollTop)
this.curOp.forceScroll = true
signalLater(this, "swapDoc", this, old)
return old
}),
phrase: function(phraseText) {
let phrases = this.options.phrases
return phrases && Object.prototype.hasOwnProperty.call(phrases, phraseText) ? phrases[phraseText] : phraseText
},
getInputField: function(){return this.display.input.getField()},
getWrapperElement: function(){return this.display.wrapper},
getScrollerElement: function(){return this.display.scroller},
getGutterElement: function(){return this.display.gutters}
}
eventMixin(CodeMirror)
CodeMirror.registerHelper = function(type, name, value) {
if (!helpers.hasOwnProperty(type)) helpers[type] = CodeMirror[type] = {_global: []}
helpers[type][name] = value
}
CodeMirror.registerGlobalHelper = function(type, name, predicate, value) {
CodeMirror.registerHelper(type, name, value)
helpers[type]._global.push({pred: predicate, val: value})
}
}
// Used for horizontal relative motion. Dir is -1 or 1 (left or
// right), unit can be "codepoint", "char", "column" (like char, but
// doesn't cross line boundaries), "word" (across next word), or
// "group" (to the start of next group of word or
// non-word-non-whitespace chars). The visually param controls
// whether, in right-to-left text, direction 1 means to move towards
// the next index in the string, or towards the character to the right
// of the current position. The resulting position will have a
// hitSide=true property if it reached the end of the document.
function findPosH(doc, pos, dir, unit, visually) {
let oldPos = pos
let origDir = dir
let lineObj = getLine(doc, pos.line)
let lineDir = visually && doc.direction == "rtl" ? -dir : dir
function findNextLine() {
let l = pos.line + lineDir
if (l < doc.first || l >= doc.first + doc.size) return false
pos = new Pos(l, pos.ch, pos.sticky)
return lineObj = getLine(doc, l)
}
function moveOnce(boundToLine) {
let next
if (unit == "codepoint") {
let ch = lineObj.text.charCodeAt(pos.ch + (dir > 0 ? 0 : -1))
if (isNaN(ch)) {
next = null
} else {
let astral = dir > 0 ? ch >= 0xD800 && ch < 0xDC00 : ch >= 0xDC00 && ch < 0xDFFF
next = new Pos(pos.line, Math.max(0, Math.min(lineObj.text.length, pos.ch + dir * (astral ? 2 : 1))), -dir)
}
} else if (visually) {
next = moveVisually(doc.cm, lineObj, pos, dir)
} else {
next = moveLogically(lineObj, pos, dir)
}
if (next == null) {
if (!boundToLine && findNextLine())
pos = endOfLine(visually, doc.cm, lineObj, pos.line, lineDir)
else
return false
} else {
pos = next
}
return true
}
if (unit == "char" || unit == "codepoint") {
moveOnce()
} else if (unit == "column") {
moveOnce(true)
} else if (unit == "word" || unit == "group") {
let sawType = null, group = unit == "group"
let helper = doc.cm && doc.cm.getHelper(pos, "wordChars")
for (let first = true;; first = false) {
if (dir < 0 && !moveOnce(!first)) break
let cur = lineObj.text.charAt(pos.ch) || "\n"
let type = isWordChar(cur, helper) ? "w"
: group && cur == "\n" ? "n"
: !group || /\s/.test(cur) ? null
: "p"
if (group && !first && !type) type = "s"
if (sawType && sawType != type) {
if (dir < 0) {dir = 1; moveOnce(); pos.sticky = "after"}
break
}
if (type) sawType = type
if (dir > 0 && !moveOnce(!first)) break
}
}
let result = skipAtomic(doc, pos, oldPos, origDir, true)
if (equalCursorPos(oldPos, result)) result.hitSide = true
return result
}
// For relative vertical movement. Dir may be -1 or 1. Unit can be
// "page" or "line". The resulting position will have a hitSide=true
// property if it reached the end of the document.
function findPosV(cm, pos, dir, unit) {
let doc = cm.doc, x = pos.left, y
if (unit == "page") {
let pageSize = Math.min(cm.display.wrapper.clientHeight, win(cm).innerHeight || doc(cm).documentElement.clientHeight)
let moveAmount = Math.max(pageSize - .5 * textHeight(cm.display), 3)
y = (dir > 0 ? pos.bottom : pos.top) + dir * moveAmount
} else if (unit == "line") {
y = dir > 0 ? pos.bottom + 3 : pos.top - 3
}
let target
for (;;) {
target = coordsChar(cm, x, y)
if (!target.outside) break
if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break }
y += dir * 5
}
return target
}