import CodeMirror from "../edit/CodeMirror.js"
import { docMethodOp } from "../display/operations.js"
import { Line } from "../line/line_data.js"
import { clipPos, clipPosArray, Pos } from "../line/pos.js"
import { visualLine } from "../line/spans.js"
import { getBetween, getLine, getLines, isLine, lineNo } from "../line/utils_line.js"
import { classTest } from "../util/dom.js"
import { splitLinesAuto } from "../util/feature_detection.js"
import { createObj, map, isEmpty, sel_dontScroll } from "../util/misc.js"
import { ensureCursorVisible, scrollToCoords } from "../display/scrolling.js"
import { changeLine, makeChange, makeChangeFromHistory, replaceRange } from "./changes.js"
import { computeReplacedSel } from "./change_measurement.js"
import { BranchChunk, LeafChunk } from "./chunk.js"
import { directionChanged, linkedDocs, updateDoc } from "./document_data.js"
import { copyHistoryArray, History } from "./history.js"
import { addLineWidget } from "./line_widget.js"
import { copySharedMarkers, detachSharedMarkers, findSharedMarkers, markText } from "./mark_text.js"
import { normalizeSelection, Range, simpleSelection } from "./selection.js"
import { extendSelection, extendSelections, setSelection, setSelectionReplaceHistory, setSimpleSelection } from "./selection_updates.js"
let nextDocId = 0
let Doc = function(text, mode, firstLine, lineSep, direction) {
if (!(this instanceof Doc)) return new Doc(text, mode, firstLine, lineSep, direction)
if (firstLine == null) firstLine = 0
BranchChunk.call(this, [new LeafChunk([new Line("", null)])])
this.first = firstLine
this.scrollTop = this.scrollLeft = 0
this.cantEdit = false
this.cleanGeneration = 1
this.modeFrontier = this.highlightFrontier = firstLine
let start = Pos(firstLine, 0)
this.sel = simpleSelection(start)
this.history = new History(null)
this.id = ++nextDocId
this.modeOption = mode
this.lineSep = lineSep
this.direction = (direction == "rtl") ? "rtl" : "ltr"
this.extend = false
if (typeof text == "string") text = this.splitLines(text)
updateDoc(this, {from: start, to: start, text: text})
setSelection(this, simpleSelection(start), sel_dontScroll)
}
Doc.prototype = createObj(BranchChunk.prototype, {
constructor: Doc,
// Iterate over the document. Supports two forms -- with only one
// argument, it calls that for each line in the document. With
// three, it iterates over the range given by the first two (with
// the second being non-inclusive).
iter: function(from, to, op) {
if (op) this.iterN(from - this.first, to - from, op)
else this.iterN(this.first, this.first + this.size, from)
},
// Non-public interface for adding and removing lines.
insert: function(at, lines) {
let height = 0
for (let i = 0; i < lines.length; ++i) height += lines[i].height
this.insertInner(at - this.first, lines, height)
},
remove: function(at, n) { this.removeInner(at - this.first, n) },
// From here, the methods are part of the public interface. Most
// are also available from CodeMirror (editor) instances.
getValue: function(lineSep) {
let lines = getLines(this, this.first, this.first + this.size)
if (lineSep === false) return lines
return lines.join(lineSep || this.lineSeparator())
},
setValue: docMethodOp(function(code) {
let top = Pos(this.first, 0), last = this.first + this.size - 1
makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length),
text: this.splitLines(code), origin: "setValue", full: true}, true)
if (this.cm) scrollToCoords(this.cm, 0, 0)
setSelection(this, simpleSelection(top), sel_dontScroll)
}),
replaceRange: function(code, from, to, origin) {
from = clipPos(this, from)
to = to ? clipPos(this, to) : from
replaceRange(this, code, from, to, origin)
},
getRange: function(from, to, lineSep) {
let lines = getBetween(this, clipPos(this, from), clipPos(this, to))
if (lineSep === false) return lines
if (lineSep === '') return lines.join('')
return lines.join(lineSep || this.lineSeparator())
},
getLine: function(line) {let l = this.getLineHandle(line); return l && l.text},
getLineHandle: function(line) {if (isLine(this, line)) return getLine(this, line)},
getLineNumber: function(line) {return lineNo(line)},
getLineHandleVisualStart: function(line) {
if (typeof line == "number") line = getLine(this, line)
return visualLine(line)
},
lineCount: function() {return this.size},
firstLine: function() {return this.first},
lastLine: function() {return this.first + this.size - 1},
clipPos: function(pos) {return clipPos(this, pos)},
getCursor: function(start) {
let range = this.sel.primary(), pos
if (start == null || start == "head") pos = range.head
else if (start == "anchor") pos = range.anchor
else if (start == "end" || start == "to" || start === false) pos = range.to()
else pos = range.from()
return pos
},
listSelections: function() { return this.sel.ranges },
somethingSelected: function() {return this.sel.somethingSelected()},
setCursor: docMethodOp(function(line, ch, options) {
setSimpleSelection(this, clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line), null, options)
}),
setSelection: docMethodOp(function(anchor, head, options) {
setSimpleSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), options)
}),
extendSelection: docMethodOp(function(head, other, options) {
extendSelection(this, clipPos(this, head), other && clipPos(this, other), options)
}),
extendSelections: docMethodOp(function(heads, options) {
extendSelections(this, clipPosArray(this, heads), options)
}),
extendSelectionsBy: docMethodOp(function(f, options) {
let heads = map(this.sel.ranges, f)
extendSelections(this, clipPosArray(this, heads), options)
}),
setSelections: docMethodOp(function(ranges, primary, options) {
if (!ranges.length) return
let out = []
for (let i = 0; i < ranges.length; i++)
out[i] = new Range(clipPos(this, ranges[i].anchor),
clipPos(this, ranges[i].head || ranges[i].anchor))
if (primary == null) primary = Math.min(ranges.length - 1, this.sel.primIndex)
setSelection(this, normalizeSelection(this.cm, out, primary), options)
}),
addSelection: docMethodOp(function(anchor, head, options) {
let ranges = this.sel.ranges.slice(0)
ranges.push(new Range(clipPos(this, anchor), clipPos(this, head || anchor)))
setSelection(this, normalizeSelection(this.cm, ranges, ranges.length - 1), options)
}),
getSelection: function(lineSep) {
let ranges = this.sel.ranges, lines
for (let i = 0; i < ranges.length; i++) {
let sel = getBetween(this, ranges[i].from(), ranges[i].to())
lines = lines ? lines.concat(sel) : sel
}
if (lineSep === false) return lines
else return lines.join(lineSep || this.lineSeparator())
},
getSelections: function(lineSep) {
let parts = [], ranges = this.sel.ranges
for (let i = 0; i < ranges.length; i++) {
let sel = getBetween(this, ranges[i].from(), ranges[i].to())
if (lineSep !== false) sel = sel.join(lineSep || this.lineSeparator())
parts[i] = sel
}
return parts
},
replaceSelection: function(code, collapse, origin) {
let dup = []
for (let i = 0; i < this.sel.ranges.length; i++)
dup[i] = code
this.replaceSelections(dup, collapse, origin || "+input")
},
replaceSelections: docMethodOp(function(code, collapse, origin) {
let changes = [], sel = this.sel
for (let i = 0; i < sel.ranges.length; i++) {
let range = sel.ranges[i]
changes[i] = {from: range.from(), to: range.to(), text: this.splitLines(code[i]), origin: origin}
}
let newSel = collapse && collapse != "end" && computeReplacedSel(this, changes, collapse)
for (let i = changes.length - 1; i >= 0; i--)
makeChange(this, changes[i])
if (newSel) setSelectionReplaceHistory(this, newSel)
else if (this.cm) ensureCursorVisible(this.cm)
}),
undo: docMethodOp(function() {makeChangeFromHistory(this, "undo")}),
redo: docMethodOp(function() {makeChangeFromHistory(this, "redo")}),
undoSelection: docMethodOp(function() {makeChangeFromHistory(this, "undo", true)}),
redoSelection: docMethodOp(function() {makeChangeFromHistory(this, "redo", true)}),
setExtending: function(val) {this.extend = val},
getExtending: function() {return this.extend},
historySize: function() {
let hist = this.history, done = 0, undone = 0
for (let i = 0; i < hist.done.length; i++) if (!hist.done[i].ranges) ++done
for (let i = 0; i < hist.undone.length; i++) if (!hist.undone[i].ranges) ++undone
return {undo: done, redo: undone}
},
clearHistory: function() {
this.history = new History(this.history)
linkedDocs(this, doc => doc.history = this.history, true)
},
markClean: function() {
this.cleanGeneration = this.changeGeneration(true)
},
changeGeneration: function(forceSplit) {
if (forceSplit)
this.history.lastOp = this.history.lastSelOp = this.history.lastOrigin = null
return this.history.generation
},
isClean: function (gen) {
return this.history.generation == (gen || this.cleanGeneration)
},
getHistory: function() {
return {done: copyHistoryArray(this.history.done),
undone: copyHistoryArray(this.history.undone)}
},
setHistory: function(histData) {
let hist = this.history = new History(this.history)
hist.done = copyHistoryArray(histData.done.slice(0), null, true)
hist.undone = copyHistoryArray(histData.undone.slice(0), null, true)
},
setGutterMarker: docMethodOp(function(line, gutterID, value) {
return changeLine(this, line, "gutter", line => {
let markers = line.gutterMarkers || (line.gutterMarkers = {})
markers[gutterID] = value
if (!value && isEmpty(markers)) line.gutterMarkers = null
return true
})
}),
clearGutter: docMethodOp(function(gutterID) {
this.iter(line => {
if (line.gutterMarkers && line.gutterMarkers[gutterID]) {
changeLine(this, line, "gutter", () => {
line.gutterMarkers[gutterID] = null
if (isEmpty(line.gutterMarkers)) line.gutterMarkers = null
return true
})
}
})
}),
lineInfo: function(line) {
let n
if (typeof line == "number") {
if (!isLine(this, line)) return null
n = line
line = getLine(this, line)
if (!line) return null
} else {
n = lineNo(line)
if (n == null) return null
}
return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers,
textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass,
widgets: line.widgets}
},
addLineClass: docMethodOp(function(handle, where, cls) {
return changeLine(this, handle, where == "gutter" ? "gutter" : "class", line => {
let prop = where == "text" ? "textClass"
: where == "background" ? "bgClass"
: where == "gutter" ? "gutterClass" : "wrapClass"
if (!line[prop]) line[prop] = cls
else if (classTest(cls).test(line[prop])) return false
else line[prop] += " " + cls
return true
})
}),
removeLineClass: docMethodOp(function(handle, where, cls) {
return changeLine(this, handle, where == "gutter" ? "gutter" : "class", line => {
let prop = where == "text" ? "textClass"
: where == "background" ? "bgClass"
: where == "gutter" ? "gutterClass" : "wrapClass"
let cur = line[prop]
if (!cur) return false
else if (cls == null) line[prop] = null
else {
let found = cur.match(classTest(cls))
if (!found) return false
let end = found.index + found[0].length
line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? "" : " ") + cur.slice(end) || null
}
return true
})
}),
addLineWidget: docMethodOp(function(handle, node, options) {
return addLineWidget(this, handle, node, options)
}),
removeLineWidget: function(widget) { widget.clear() },
markText: function(from, to, options) {
return markText(this, clipPos(this, from), clipPos(this, to), options, options && options.type || "range")
},
setBookmark: function(pos, options) {
let realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options),
insertLeft: options && options.insertLeft,
clearWhenEmpty: false, shared: options && options.shared,
handleMouseEvents: options && options.handleMouseEvents}
pos = clipPos(this, pos)
return markText(this, pos, pos, realOpts, "bookmark")
},
findMarksAt: function(pos) {
pos = clipPos(this, pos)
let markers = [], spans = getLine(this, pos.line).markedSpans
if (spans) for (let i = 0; i < spans.length; ++i) {
let span = spans[i]
if ((span.from == null || span.from <= pos.ch) &&
(span.to == null || span.to >= pos.ch))
markers.push(span.marker.parent || span.marker)
}
return markers
},
findMarks: function(from, to, filter) {
from = clipPos(this, from); to = clipPos(this, to)
let found = [], lineNo = from.line
this.iter(from.line, to.line + 1, line => {
let spans = line.markedSpans
if (spans) for (let i = 0; i < spans.length; i++) {
let span = spans[i]
if (!(span.to != null && lineNo == from.line && from.ch >= span.to ||
span.from == null && lineNo != from.line ||
span.from != null && lineNo == to.line && span.from >= to.ch) &&
(!filter || filter(span.marker)))
found.push(span.marker.parent || span.marker)
}
++lineNo
})
return found
},
getAllMarks: function() {
let markers = []
this.iter(line => {
let sps = line.markedSpans
if (sps) for (let i = 0; i < sps.length; ++i)
if (sps[i].from != null) markers.push(sps[i].marker)
})
return markers
},
posFromIndex: function(off) {
let ch, lineNo = this.first, sepSize = this.lineSeparator().length
this.iter(line => {
let sz = line.text.length + sepSize
if (sz > off) { ch = off; return true }
off -= sz
++lineNo
})
return clipPos(this, Pos(lineNo, ch))
},
indexFromPos: function (coords) {
coords = clipPos(this, coords)
let index = coords.ch
if (coords.line < this.first || coords.ch < 0) return 0
let sepSize = this.lineSeparator().length
this.iter(this.first, coords.line, line => { // iter aborts when callback returns a truthy value
index += line.text.length + sepSize
})
return index
},
copy: function(copyHistory) {
let doc = new Doc(getLines(this, this.first, this.first + this.size),
this.modeOption, this.first, this.lineSep, this.direction)
doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft
doc.sel = this.sel
doc.extend = false
if (copyHistory) {
doc.history.undoDepth = this.history.undoDepth
doc.setHistory(this.getHistory())
}
return doc
},
linkedDoc: function(options) {
if (!options) options = {}
let from = this.first, to = this.first + this.size
if (options.from != null && options.from > from) from = options.from
if (options.to != null && options.to < to) to = options.to
let copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from, this.lineSep, this.direction)
if (options.sharedHist) copy.history = this.history
;(this.linked || (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist})
copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}]
copySharedMarkers(copy, findSharedMarkers(this))
return copy
},
unlinkDoc: function(other) {
if (other instanceof CodeMirror) other = other.doc
if (this.linked) for (let i = 0; i < this.linked.length; ++i) {
let link = this.linked[i]
if (link.doc != other) continue
this.linked.splice(i, 1)
other.unlinkDoc(this)
detachSharedMarkers(findSharedMarkers(this))
break
}
// If the histories were shared, split them again
if (other.history == this.history) {
let splitIds = [other.id]
linkedDocs(other, doc => splitIds.push(doc.id), true)
other.history = new History(null)
other.history.done = copyHistoryArray(this.history.done, splitIds)
other.history.undone = copyHistoryArray(this.history.undone, splitIds)
}
},
iterLinkedDocs: function(f) {linkedDocs(this, f)},
getMode: function() {return this.mode},
getEditor: function() {return this.cm},
splitLines: function(str) {
if (this.lineSep) return str.split(this.lineSep)
return splitLinesAuto(str)
},
lineSeparator: function() { return this.lineSep || "\n" },
setDirection: docMethodOp(function (dir) {
if (dir != "rtl") dir = "ltr"
if (dir == this.direction) return
this.direction = dir
this.iter(line => line.order = null)
if (this.cm) directionChanged(this.cm)
})
})
// Public alias.
Doc.prototype.eachLine = Doc.prototype.iter
export default Doc
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