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