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File: editor/codemirror/src/model/mark_text.js

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File: editor/codemirror/src/model/mark_text.js
Role: Auxiliary data
Content type: text/plain
Description: Auxiliary data
Class: Custom PHP HTML Parser
Process HTML to replace it with parameter values
Author: By
Last change:
Date: 1 year ago
Size: 11,224 bytes
 

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import { eltP } from "../util/dom.js" import { eventMixin, hasHandler, on } from "../util/event.js" import { endOperation, operation, runInOp, startOperation } from "../display/operations.js" import { clipPos, cmp, Pos } from "../line/pos.js" import { lineNo, updateLineHeight } from "../line/utils_line.js" import { clearLineMeasurementCacheFor, findViewForLine, textHeight } from "../measurement/position_measurement.js" import { seeReadOnlySpans, seeCollapsedSpans } from "../line/saw_special_spans.js" import { addMarkedSpan, conflictingCollapsedRange, getMarkedSpanFor, lineIsHidden, lineLength, MarkedSpan, removeMarkedSpan, visualLine } from "../line/spans.js" import { copyObj, indexOf, lst } from "../util/misc.js" import { signalLater } from "../util/operation_group.js" import { widgetHeight } from "../measurement/widgets.js" import { regChange, regLineChange } from "../display/view_tracking.js" import { linkedDocs } from "./document_data.js" import { addChangeToHistory } from "./history.js" import { reCheckSelection } from "./selection_updates.js" // TEXTMARKERS // Created with markText and setBookmark methods. A TextMarker is a // handle that can be used to clear or find a marked position in the // document. Line objects hold arrays (markedSpans) containing // {from, to, marker} object pointing to such marker objects, and // indicating that such a marker is present on that line. Multiple // lines may point to the same marker when it spans across lines. // The spans will have null for their from/to properties when the // marker continues beyond the start/end of the line. Markers have // links back to the lines they currently touch. // Collapsed markers have unique ids, in order to be able to order // them, which is needed for uniquely determining an outer marker // when they overlap (they may nest, but not partially overlap). let nextMarkerId = 0 export class TextMarker { constructor(doc, type) { this.lines = [] this.type = type this.doc = doc this.id = ++nextMarkerId } // Clear the marker. clear() { if (this.explicitlyCleared) return let cm = this.doc.cm, withOp = cm && !cm.curOp if (withOp) startOperation(cm) if (hasHandler(this, "clear")) { let found = this.find() if (found) signalLater(this, "clear", found.from, found.to) } let min = null, max = null for (let i = 0; i < this.lines.length; ++i) { let line = this.lines[i] let span = getMarkedSpanFor(line.markedSpans, this) if (cm && !this.collapsed) regLineChange(cm, lineNo(line), "text") else if (cm) { if (span.to != null) max = lineNo(line) if (span.from != null) min = lineNo(line) } line.markedSpans = removeMarkedSpan(line.markedSpans, span) if (span.from == null && this.collapsed && !lineIsHidden(this.doc, line) && cm) updateLineHeight(line, textHeight(cm.display)) } if (cm && this.collapsed && !cm.options.lineWrapping) for (let i = 0; i < this.lines.length; ++i) { let visual = visualLine(this.lines[i]), len = lineLength(visual) if (len > cm.display.maxLineLength) { cm.display.maxLine = visual cm.display.maxLineLength = len cm.display.maxLineChanged = true } } if (min != null && cm && this.collapsed) regChange(cm, min, max + 1) this.lines.length = 0 this.explicitlyCleared = true if (this.atomic && this.doc.cantEdit) { this.doc.cantEdit = false if (cm) reCheckSelection(cm.doc) } if (cm) signalLater(cm, "markerCleared", cm, this, min, max) if (withOp) endOperation(cm) if (this.parent) this.parent.clear() } // Find the position of the marker in the document. Returns a {from, // to} object by default. Side can be passed to get a specific side // -- 0 (both), -1 (left), or 1 (right). When lineObj is true, the // Pos objects returned contain a line object, rather than a line // number (used to prevent looking up the same line twice). find(side, lineObj) { if (side == null && this.type == "bookmark") side = 1 let from, to for (let i = 0; i < this.lines.length; ++i) { let line = this.lines[i] let span = getMarkedSpanFor(line.markedSpans, this) if (span.from != null) { from = Pos(lineObj ? line : lineNo(line), span.from) if (side == -1) return from } if (span.to != null) { to = Pos(lineObj ? line : lineNo(line), span.to) if (side == 1) return to } } return from && {from: from, to: to} } // Signals that the marker's widget changed, and surrounding layout // should be recomputed. changed() { let pos = this.find(-1, true), widget = this, cm = this.doc.cm if (!pos || !cm) return runInOp(cm, () => { let line = pos.line, lineN = lineNo(pos.line) let view = findViewForLine(cm, lineN) if (view) { clearLineMeasurementCacheFor(view) cm.curOp.selectionChanged = cm.curOp.forceUpdate = true } cm.curOp.updateMaxLine = true if (!lineIsHidden(widget.doc, line) && widget.height != null) { let oldHeight = widget.height widget.height = null let dHeight = widgetHeight(widget) - oldHeight if (dHeight) updateLineHeight(line, line.height + dHeight) } signalLater(cm, "markerChanged", cm, this) }) } attachLine(line) { if (!this.lines.length && this.doc.cm) { let op = this.doc.cm.curOp if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1) (op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this) } this.lines.push(line) } detachLine(line) { this.lines.splice(indexOf(this.lines, line), 1) if (!this.lines.length && this.doc.cm) { let op = this.doc.cm.curOp ;(op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this) } } } eventMixin(TextMarker) // Create a marker, wire it up to the right lines, and export function markText(doc, from, to, options, type) { // Shared markers (across linked documents) are handled separately // (markTextShared will call out to this again, once per // document). if (options && options.shared) return markTextShared(doc, from, to, options, type) // Ensure we are in an operation. if (doc.cm && !doc.cm.curOp) return operation(doc.cm, markText)(doc, from, to, options, type) let marker = new TextMarker(doc, type), diff = cmp(from, to) if (options) copyObj(options, marker, false) // Don't connect empty markers unless clearWhenEmpty is false if (diff > 0 || diff == 0 && marker.clearWhenEmpty !== false) return marker if (marker.replacedWith) { // Showing up as a widget implies collapsed (widget replaces text) marker.collapsed = true marker.widgetNode = eltP("span", [marker.replacedWith], "CodeMirror-widget") if (!options.handleMouseEvents) marker.widgetNode.setAttribute("cm-ignore-events", "true") if (options.insertLeft) marker.widgetNode.insertLeft = true } if (marker.collapsed) { if (conflictingCollapsedRange(doc, from.line, from, to, marker) || from.line != to.line && conflictingCollapsedRange(doc, to.line, from, to, marker)) throw new Error("Inserting collapsed marker partially overlapping an existing one") seeCollapsedSpans() } if (marker.addToHistory) addChangeToHistory(doc, {from: from, to: to, origin: "markText"}, doc.sel, NaN) let curLine = from.line, cm = doc.cm, updateMaxLine doc.iter(curLine, to.line + 1, line => { if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(line) == cm.display.maxLine) updateMaxLine = true if (marker.collapsed && curLine != from.line) updateLineHeight(line, 0) addMarkedSpan(line, new MarkedSpan(marker, curLine == from.line ? from.ch : null, curLine == to.line ? to.ch : null), doc.cm && doc.cm.curOp) ++curLine }) // lineIsHidden depends on the presence of the spans, so needs a second pass if (marker.collapsed) doc.iter(from.line, to.line + 1, line => { if (lineIsHidden(doc, line)) updateLineHeight(line, 0) }) if (marker.clearOnEnter) on(marker, "beforeCursorEnter", () => marker.clear()) if (marker.readOnly) { seeReadOnlySpans() if (doc.history.done.length || doc.history.undone.length) doc.clearHistory() } if (marker.collapsed) { marker.id = ++nextMarkerId marker.atomic = true } if (cm) { // Sync editor state if (updateMaxLine) cm.curOp.updateMaxLine = true if (marker.collapsed) regChange(cm, from.line, to.line + 1) else if (marker.className || marker.startStyle || marker.endStyle || marker.css || marker.attributes || marker.title) for (let i = from.line; i <= to.line; i++) regLineChange(cm, i, "text") if (marker.atomic) reCheckSelection(cm.doc) signalLater(cm, "markerAdded", cm, marker) } return marker } // SHARED TEXTMARKERS // A shared marker spans multiple linked documents. It is // implemented as a meta-marker-object controlling multiple normal // markers. export class SharedTextMarker { constructor(markers, primary) { this.markers = markers this.primary = primary for (let i = 0; i < markers.length; ++i) markers[i].parent = this } clear() { if (this.explicitlyCleared) return this.explicitlyCleared = true for (let i = 0; i < this.markers.length; ++i) this.markers[i].clear() signalLater(this, "clear") } find(side, lineObj) { return this.primary.find(side, lineObj) } } eventMixin(SharedTextMarker) function markTextShared(doc, from, to, options, type) { options = copyObj(options) options.shared = false let markers = [markText(doc, from, to, options, type)], primary = markers[0] let widget = options.widgetNode linkedDocs(doc, doc => { if (widget) options.widgetNode = widget.cloneNode(true) markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type)) for (let i = 0; i < doc.linked.length; ++i) if (doc.linked[i].isParent) return primary = lst(markers) }) return new SharedTextMarker(markers, primary) } export function findSharedMarkers(doc) { return doc.findMarks(Pos(doc.first, 0), doc.clipPos(Pos(doc.lastLine())), m => m.parent) } export function copySharedMarkers(doc, markers) { for (let i = 0; i < markers.length; i++) { let marker = markers[i], pos = marker.find() let mFrom = doc.clipPos(pos.from), mTo = doc.clipPos(pos.to) if (cmp(mFrom, mTo)) { let subMark = markText(doc, mFrom, mTo, marker.primary, marker.primary.type) marker.markers.push(subMark) subMark.parent = marker } } } export function detachSharedMarkers(markers) { for (let i = 0; i < markers.length; i++) { let marker = markers[i], linked = [marker.primary.doc] linkedDocs(marker.primary.doc, d => linked.push(d)) for (let j = 0; j < marker.markers.length; j++) { let subMarker = marker.markers[j] if (indexOf(linked, subMarker.doc) == -1) { subMarker.parent = null marker.markers.splice(j--, 1) } } } }