Preview: support preview of local images with relative path to markdown file

Author	Karl Tauber <email>
Date	2015-08-05 12:05:49 GMT+0200
Commit	669613d35c62b054383d1343e5603a21b15febe2
Parent	371f7be
Delta	39 lines added, 11 lines removed, 28-line increase

src/main/java/org/markdownwriterfx/preview/ASTPreview.java

		package org.markdownwriterfx.preview;

		+import java.nio.file.Path;
		import javafx.scene.Node;
		import javafx.scene.control.ScrollBar;


		@Override
		- public void update(RootNode astRoot) {
		+ public void update(RootNode astRoot, Path path) {
		double scrollTop = textArea.getScrollTop();
		double scrollLeft = textArea.getScrollLeft();

src/main/java/org/markdownwriterfx/preview/HtmlSourcePreview.java

		package org.markdownwriterfx.preview;

		+import java.nio.file.Path;
		import javafx.scene.Node;
		import javafx.scene.control.ScrollBar;


		@Override
		- public void update(RootNode astRoot) {
		+ public void update(RootNode astRoot, Path path) {
		double scrollTop = textArea.getScrollTop();

src/main/java/org/markdownwriterfx/preview/MarkdownPreviewPane.java

		package org.markdownwriterfx.preview;

		+import java.nio.file.Path;
		import javafx.application.Platform;
		import javafx.beans.property.DoubleProperty;


		interface Preview {
		- void update(RootNode astRoot);
		+ void update(RootNode astRoot, Path path);
		void scrollY(double value);
		}


		tabPane.getSelectionModel().selectedItemProperty().addListener((observable, oldTab, newTab) -> {
		- getActivePreview().update(getMarkdownAST());
		+ update();
		scrollY();
		+ });
		+
		+ path.addListener((observable, oldValue, newValue) -> {
		+ update();
		});

		markdownAST.addListener((observable, oldValue, newValue) -> {
		- getActivePreview().update(newValue);
		+ update();
		});


		private Preview getActivePreview() {
		return (Preview) tabPane.getSelectionModel().getSelectedItem().getUserData();
		+ }
		+
		+ private void update() {
		+ getActivePreview().update(getMarkdownAST(), getPath());
		}


		});
		}
		+
		+ // 'path' property
		+ private final ObjectProperty<Path> path = new SimpleObjectProperty<>();
		+ public Path getPath() { return path.get(); }
		+ public void setPath(Path path) { this.path.set(path); }
		+ public ObjectProperty<Path> pathProperty() { return path; }

		// 'markdownAST' property

src/main/java/org/markdownwriterfx/preview/WebViewPreview.java

		package org.markdownwriterfx.preview;

		+import java.nio.file.Path;
		import java.util.Collections;
		import javafx.scene.Node;


		static String toHtml(RootNode astRoot) {
		+ if (astRoot == null)
		+ return "";
		return new ToHtmlSerializer(new LinkRenderer(),
		Collections.<String, VerbatimSerializer>emptyMap(),
		PegDownPlugins.NONE.getHtmlSerializerPlugins())
		.toHtml(astRoot);
		}

		@Override
		- public void update(RootNode astRoot) {
		+ public void update(RootNode astRoot, Path path) {
		if (!webView.getEngine().getLoadWorker().isRunning()) {
		// get window.scrollX and window.scrollY from web engine,
		// but only no worker is running (in this case the result would be zero)
		Object scrollXobj = webView.getEngine().executeScript("window.scrollX");
		Object scrollYobj = webView.getEngine().executeScript("window.scrollY");
		lastScrollX = (scrollXobj instanceof Number) ? ((Number)scrollXobj).intValue() : 0;
		lastScrollY = (scrollYobj instanceof Number) ? ((Number)scrollYobj).intValue() : 0;
		}

		+ String base = (path != null)
		+ ? ("<base href=\"" + path.getParent().toUri().toString() + "\">\n")
		+ : "";
		String scrollScript = (lastScrollX > 0 \|\| lastScrollY > 0)
		? (" onload='window.scrollTo("+lastScrollX+", "+lastScrollY+");'")
		- : null;
		+ : "";

		webView.getEngine().loadContent(
		- "<!DOCTYPE html><html><head><link rel=\"stylesheet\" href=\""
		- + getClass().getResource("markdownpad-github.css")
		- + "\"></head><body" + scrollScript + ">"
		+ "<!DOCTYPE html>\n"
		+ + "<html>\n"
		+ + "<head>\n"
		+ + "<link rel=\"stylesheet\" href=\"" + getClass().getResource("markdownpad-github.css") + "\">\n"
		+ + base
		+ + "</head>\n"
		+ + "<body" + scrollScript + ">\n"
		+ toHtml(astRoot)
		- + "</body></html>");
		+ + "</body>\n"
		+ + "</html>");
		}