Rename markdown to markdown-language-features

extensions/markdown-language-features/preview-src/index.ts

@@ -0,0 +1,117 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import { getSettings } from './settings';
+import { postCommand, postMessage } from './messaging';
+import { onceDocumentLoaded } from './events';
+import { getEditorLineNumberForPageOffset, scrollToRevealSourceLine } from './scroll-sync';
+import { ActiveLineMarker } from './activeLineMarker';
+import throttle = require('lodash.throttle');
+
+var scrollDisabled = true;
+const marker = new ActiveLineMarker();
+const settings = getSettings();
+
+onceDocumentLoaded(() => {
+	if (settings.scrollPreviewWithEditor) {
+		setTimeout(() => {
+			const initialLine = +settings.line;
+			if (!isNaN(initialLine)) {
+				scrollDisabled = true;
+				scrollToRevealSourceLine(initialLine);
+			}
+		}, 0);
+	}
+});
+
+const onUpdateView = (() => {
+	const doScroll = throttle((line: number) => {
+		scrollDisabled = true;
+		scrollToRevealSourceLine(line);
+	}, 50);
+
+	return (line: number, settings: any) => {
+		if (!isNaN(line)) {
+			settings.line = line;
+			doScroll(line);
+		}
+	};
+})();
+
+window.addEventListener('resize', () => {
+	scrollDisabled = true;
+}, true);
+
+window.addEventListener('message', event => {
+	if (event.data.source !== settings.source) {
+		return;
+	}
+
+	switch (event.data.type) {
+		case 'onDidChangeTextEditorSelection':
+			marker.onDidChangeTextEditorSelection(event.data.line);
+			break;
+
+		case 'updateView':
+			onUpdateView(event.data.line, settings);
+			break;
+	}
+}, false);
+
+document.addEventListener('dblclick', event => {
+	if (!settings.doubleClickToSwitchToEditor) {
+		return;
+	}
+
+	// Ignore clicks on links
+	for (let node = event.target as HTMLElement; node; node = node.parentNode as HTMLElement) {
+		if (node.tagName === 'A') {
+			return;
+		}
+	}
+
+	const offset = event.pageY;
+	const line = getEditorLineNumberForPageOffset(offset);
+	if (typeof line === 'number' && !isNaN(line)) {
+		postMessage('didClick', { line });
+	}
+});
+
+document.addEventListener('click', event => {
+	if (!event) {
+		return;
+	}
+
+	let node: any = event.target;
+	while (node) {
+		if (node.tagName && node.tagName === 'A' && node.href) {
+			if (node.getAttribute('href').startsWith('#')) {
+				break;
+			}
+			if (node.href.startsWith('file://') || node.href.startsWith('vscode-resource:')) {
+				const [path, fragment] = node.href.replace(/^(file:\/\/|vscode-resource:)/i, '').split('#');
+				postCommand('_markdown.openDocumentLink', [{ path, fragment }]);
+				event.preventDefault();
+				event.stopPropagation();
+				break;
+			}
+			break;
+		}
+		node = node.parentNode;
+	}
+}, true);
+
+if (settings.scrollEditorWithPreview) {
+	window.addEventListener('scroll', throttle(() => {
+		if (scrollDisabled) {
+			scrollDisabled = false;
+		} else {
+			const line = getEditorLineNumberForPageOffset(window.scrollY);
+			if (typeof line === 'number' && !isNaN(line)) {
+				postMessage('revealLine', { line });
+			}
+		}
+	}, 50));
+}