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

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  Classes of Cedric Maenetja   Custom PHP HTML Parser   editor/codemirror/src/model/document_data.js   Download  
File: editor/codemirror/src/model/document_data.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: 4,265 bytes
 

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import { loadMode } from "../display/mode_state.js" import { runInOp } from "../display/operations.js" import { regChange } from "../display/view_tracking.js" import { Line, updateLine } from "../line/line_data.js" import { findMaxLine } from "../line/spans.js" import { getLine } from "../line/utils_line.js" import { estimateLineHeights } from "../measurement/position_measurement.js" import { addClass, rmClass } from "../util/dom.js" import { lst } from "../util/misc.js" import { signalLater } from "../util/operation_group.js" // DOCUMENT DATA STRUCTURE // By default, updates that start and end at the beginning of a line // are treated specially, in order to make the association of line // widgets and marker elements with the text behave more intuitive. export function isWholeLineUpdate(doc, change) { return change.from.ch == 0 && change.to.ch == 0 && lst(change.text) == "" && (!doc.cm || doc.cm.options.wholeLineUpdateBefore) } // Perform a change on the document data structure. export function updateDoc(doc, change, markedSpans, estimateHeight) { function spansFor(n) {return markedSpans ? markedSpans[n] : null} function update(line, text, spans) { updateLine(line, text, spans, estimateHeight) signalLater(line, "change", line, change) } function linesFor(start, end) { let result = [] for (let i = start; i < end; ++i) result.push(new Line(text[i], spansFor(i), estimateHeight)) return result } let from = change.from, to = change.to, text = change.text let firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line) let lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line // Adjust the line structure if (change.full) { doc.insert(0, linesFor(0, text.length)) doc.remove(text.length, doc.size - text.length) } else if (isWholeLineUpdate(doc, change)) { // This is a whole-line replace. Treated specially to make // sure line objects move the way they are supposed to. let added = linesFor(0, text.length - 1) update(lastLine, lastLine.text, lastSpans) if (nlines) doc.remove(from.line, nlines) if (added.length) doc.insert(from.line, added) } else if (firstLine == lastLine) { if (text.length == 1) { update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans) } else { let added = linesFor(1, text.length - 1) added.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight)) update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0)) doc.insert(from.line + 1, added) } } else if (text.length == 1) { update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0)) doc.remove(from.line + 1, nlines) } else { update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0)) update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans) let added = linesFor(1, text.length - 1) if (nlines > 1) doc.remove(from.line + 1, nlines - 1) doc.insert(from.line + 1, added) } signalLater(doc, "change", doc, change) } // Call f for all linked documents. export function linkedDocs(doc, f, sharedHistOnly) { function propagate(doc, skip, sharedHist) { if (doc.linked) for (let i = 0; i < doc.linked.length; ++i) { let rel = doc.linked[i] if (rel.doc == skip) continue let shared = sharedHist && rel.sharedHist if (sharedHistOnly && !shared) continue f(rel.doc, shared) propagate(rel.doc, doc, shared) } } propagate(doc, null, true) } // Attach a document to an editor. export function attachDoc(cm, doc) { if (doc.cm) throw new Error("This document is already in use.") cm.doc = doc doc.cm = cm estimateLineHeights(cm) loadMode(cm) setDirectionClass(cm) cm.options.direction = doc.direction if (!cm.options.lineWrapping) findMaxLine(cm) cm.options.mode = doc.modeOption regChange(cm) } function setDirectionClass(cm) { ;(cm.doc.direction == "rtl" ? addClass : rmClass)(cm.display.lineDiv, "CodeMirror-rtl") } export function directionChanged(cm) { runInOp(cm, () => { setDirectionClass(cm) regChange(cm) }) }