save and restore opened files

Author	Karl Tauber <email>
Date	2015-07-24 18:43:05 GMT+0200
Commit	42da8236a81a6ce09ca66a677f886eff5bf552fe
Parent	e4c1139
Delta	78 lines added, 7 lines removed, 71-line increase

src/main/java/org/markdownwriterfx/util/Utils.java

		package org.markdownwriterfx.util;

		+import java.util.ArrayList;
		import java.util.Set;
		+import java.util.prefs.Preferences;
		import javafx.geometry.Orientation;
		import javafx.scene.Node;
		import javafx.scene.control.ScrollBar;

		/**
		* @author Karl Tauber
		*/
		public class Utils
		{
		+ public static String[] getPrefsStrings(Preferences prefs, String key) {
		+ ArrayList<String> arr = new ArrayList<String>();
		+ for (int i = 0; i < 10000; i++) {
		+ String s = prefs.get(key + (i + 1), null);
		+ if (s == null)
		+ break;
		+ arr.add(s);
		+ }
		+ return arr.toArray(new String[arr.size()]);
		+ }
		+
		+ public static void putPrefsStrings(Preferences prefs, String key, String[] strings) {
		+ for (int i = 0; i < strings.length; i++)
		+ prefs.put(key + (i + 1), strings[i]);
		+
		+ for (int i = strings.length; prefs.get(key + (i + 1), null) != null; i++)
		+ prefs.remove(key + (i + 1));
		+ }
		+
		public static ScrollBar findVScrollBar(Node node) {
		Set<Node> scrollBars = node.lookupAll(".scroll-bar");

src/main/java/org/markdownwriterfx/FileEditorTabPane.java

		import java.io.File;
		import java.nio.file.Path;
		+import java.util.ArrayList;
		import java.util.List;
		+import java.util.prefs.Preferences;
		import javafx.beans.property.ReadOnlyBooleanProperty;
		import javafx.beans.property.ReadOnlyBooleanWrapper;

		import javafx.stage.FileChooser;
		import javafx.stage.FileChooser.ExtensionFilter;
		+import org.markdownwriterfx.util.Utils;

		/**

		}
		});
		+
		+ // re-open files
		+ restoreState();
		}


		return null;

		- FileEditor[] fileEditors = new FileEditor[selectedFiles.size()];
		- for (int i = 0; i < selectedFiles.size(); i++) {
		- fileEditors[i] = createFileEditor(selectedFiles.get(i).toPath());
		+ return openEditors(selectedFiles, 0);
		+ }
		+
		+ FileEditor[] openEditors(List<File> files, int activeIndex) {
		+ FileEditor[] fileEditors = new FileEditor[files.size()];
		+ for (int i = 0; i < files.size(); i++) {
		+ fileEditors[i] = createFileEditor(files.get(i).toPath());

		Tab tab = fileEditors[i].getTab();
		tabPane.getTabs().add(tab);

		// select first file
		- if (i == 0)
		+ if (i == activeIndex)
		tabPane.getSelectionModel().select(tab);
		}

		return false;
		}
		+
		+ saveState(allEditors, activeEditor);

		return tabPane.getTabs().isEmpty();

		fileChooser.setInitialDirectory(new File("."));
		return fileChooser;
		+ }
		+
		+ private void restoreState() {
		+ Preferences state = MarkdownWriterFXApp.getState();
		+ String[] fileNames = Utils.getPrefsStrings(state, "file");
		+ String activeFileName = state.get("activeFile", null);
		+
		+ int activeIndex = 0;
		+ ArrayList<File> files = new ArrayList<>(fileNames.length);
		+ for (String fileName : fileNames) {
		+ File file = new File(fileName);
		+ if (file.exists()) {
		+ files.add(file);
		+
		+ if (fileName.equals(activeFileName))
		+ activeIndex = files.size() - 1;
		+ }
		+ }
		+
		+ if (files.isEmpty()) {
		+ newEditor();
		+ return;
		+ }
		+
		+ openEditors(files, activeIndex);
		+ }
		+
		+ private void saveState(FileEditor[] allEditors, FileEditor activeEditor) {
		+ ArrayList<String> fileNames = new ArrayList<>(allEditors.length);
		+ for (FileEditor fileEditor : allEditors) {
		+ if (fileEditor.getPath() != null)
		+ fileNames.add(fileEditor.getPath().toString());
		+ }
		+
		+ Preferences state = MarkdownWriterFXApp.getState();
		+ Utils.putPrefsStrings(state, "file", fileNames.toArray(new String[fileNames.size()]));
		+ if (activeEditor != null && activeEditor.getPath() != null)
		+ state.put("activeFile", activeEditor.getPath().toString());
		+ else
		+ state.remove("activeFile");
		}
		}

src/main/java/org/markdownwriterfx/MainWindow.java

		private final FileEditorTabPane fileEditorTabPane;

		- public MainWindow() {
		+ MainWindow() {
		fileEditorTabPane = new FileEditorTabPane(this);


		});
		});
		-
		- fileNew();
		}