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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
// @flow
export * from "./source-documents";
export * from "./get-token-location";
export * from "./source-search";
export * from "../ui";
export { onMouseOver } from "./token-events";
import { createEditor } from "./create-editor";
import { shouldPrettyPrint, isOriginal } from "../source";
import { findNext, findPrev } from "./source-search";
import { isWasm, lineToWasmOffset, wasmOffsetToLine } from "../wasm";
import type { AstLocation } from "../../workers/parser";
import type { EditorPosition, EditorRange } from "../editor/types";
import type { Location } from "../../types";
type Editor = Object;
let editor: ?Editor;
export function getEditor() {
if (editor) {
return editor;
}
editor = createEditor();
return editor;
}
export function removeEditor() {
editor = null;
}
function getCodeMirror() {
return editor && editor.codeMirror;
}
export function startOperation() {
const codeMirror = getCodeMirror();
if (!codeMirror) {
return;
}
codeMirror.startOperation();
}
export function endOperation() {
const codeMirror = getCodeMirror();
if (!codeMirror) {
return;
}
codeMirror.endOperation();
}
export function shouldShowPrettyPrint(selectedSource) {
if (!selectedSource) {
return false;
}
return shouldPrettyPrint(selectedSource);
}
export function shouldShowFooter(selectedSource, horizontal) {
if (!horizontal) {
return true;
}
if (!selectedSource) {
return false;
}
return shouldShowPrettyPrint(selectedSource) || isOriginal(selectedSource);
}
export function traverseResults(e, ctx, query, dir, modifiers) {
e.stopPropagation();
e.preventDefault();
if (dir == "prev") {
findPrev(ctx, query, true, modifiers);
} else if (dir == "next") {
findNext(ctx, query, true, modifiers);
}
}
export function toEditorLine(sourceId: string, lineOrOffset: number): number {
if (isWasm(sourceId)) {
// TODO ensure offset is always "mappable" to edit line.
return wasmOffsetToLine(sourceId, lineOrOffset) || 0;
}
return lineOrOffset ? lineOrOffset - 1 : 1;
}
export function toEditorPosition(location: Location): EditorPosition {
return {
line: toEditorLine(location.sourceId, location.line),
column: isWasm(location.sourceId) || !location.column ? 0 : location.column
};
}
export function toEditorRange(
sourceId: string,
location: AstLocation
): EditorRange {
const { start, end } = location;
return {
start: toEditorPosition({ ...start, sourceId }),
end: toEditorPosition({ ...end, sourceId })
};
}
export function toSourceLine(sourceId: string, line: number): ?number {
return isWasm(sourceId) ? lineToWasmOffset(sourceId, line) : line + 1;
}
export function scrollToColumn(codeMirror: any, line: number, column: number) {
const { top, left } = codeMirror.charCoords(
{ line: line, ch: column },
"local"
);
if (!isVisible(codeMirror, top, left)) {
const scroller = codeMirror.getScrollerElement();
const centeredX = Math.max(left - scroller.offsetWidth / 2, 0);
const centeredY = Math.max(top - scroller.offsetHeight / 2, 0);
codeMirror.scrollTo(centeredX, centeredY);
}
}
function isVisible(codeMirror: any, top: number, left: number) {
function withinBounds(x, min, max) {
return x >= min && x <= max;
}
const scrollArea = codeMirror.getScrollInfo();
const charWidth = codeMirror.defaultCharWidth();
const fontHeight = codeMirror.defaultTextHeight();
const { scrollTop, scrollLeft } = codeMirror.doc;
const inXView = withinBounds(
left,
scrollLeft,
scrollLeft + (scrollArea.clientWidth - 30) - charWidth
);
const inYView = withinBounds(
top,
scrollTop,
scrollTop + scrollArea.clientHeight - fontHeight
);
return inXView && inYView;
}
export function markText(_editor: any, className, { start, end }: EditorRange) {
return _editor.codeMirror.markText(
{ ch: start.column, line: start.line },
{ ch: end.column, line: end.line },
{ className }
);
}
export function lineAtHeight(_editor, sourceId, event) {
const _editorLine = _editor.codeMirror.lineAtHeight(event.clientY);
return toSourceLine(sourceId, _editorLine);
}
export function getSourceLocationFromMouseEvent(
_editor: Object,
selectedLocation: Location,
e: MouseEvent
) {
const { line, ch } = _editor.codeMirror.coordsChar({
left: e.clientX,
top: e.clientY
});
return {
sourceId: selectedLocation.sourceId,
line: line + 1,
column: ch + 1
};
}
export function forEachLine(codeMirror, iter) {
codeMirror.operation(() => {
codeMirror.doc.iter(0, codeMirror.lineCount(), iter);
});
}
export function removeLineClass(codeMirror, line, className) {
codeMirror.removeLineClass(line, "line", className);
}
export function clearLineClass(codeMirror, className) {
forEachLine(codeMirror, line => {
removeLineClass(codeMirror, line, className);
});
}
export function getTextForLine(codeMirror, line) {
return codeMirror.getLine(line - 1).trim();
}
export function getCursorLine(codeMirror): number {
return codeMirror.getCursor().line;
}