From: Niki Roo <niki@nikiroo.be>
Date: Wed, 8 Mar 2017 18:57:20 +0000 (+0100)
Subject: New: ConfigEditor, UI to configure a bundle
X-Git-Url: https://git.nikiroo.be/?a=commitdiff_plain;h=d350b96b06c55189e5d0ceed9db6f237e7d8d871;p=fanfix-jexer.git

New: ConfigEditor, UI to configure a bundle
---

diff --git a/src/be/nikiroo/utils/ui/ConfigEditor.java b/src/be/nikiroo/utils/ui/ConfigEditor.java
new file mode 100644
index 0000000..6b820bb
--- /dev/null
+++ b/src/be/nikiroo/utils/ui/ConfigEditor.java
@@ -0,0 +1,102 @@
+package be.nikiroo.utils.ui;
+
+import java.awt.BorderLayout;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.io.IOException;
+import java.util.List;
+
+import javax.swing.BoxLayout;
+import javax.swing.JButton;
+import javax.swing.JPanel;
+import javax.swing.border.EmptyBorder;
+
+import be.nikiroo.utils.resources.Bundle;
+
+/**
+ * A configuration panel for a {@link Bundle}.
+ * <p>
+ * All the items in the given {@link Bundle} will be displayed in editable
+ * controls, with options to Save, Reset and/or Reset to the application default
+ * values.
+ * 
+ * @author niki
+ *
+ * @param <E>
+ *            the type of {@link Bundle} to edit
+ */
+public class ConfigEditor<E extends Enum<E>> extends JPanel {
+	private static final long serialVersionUID = 1L;
+	private List<ConfigItem<E>> items;
+
+	/**
+	 * Create a new {@link ConfigEditor} for this {@link Bundle}.
+	 * 
+	 * @param type
+	 *            a class instance of the item type to work on
+	 * @param bundle
+	 *            the {@link Bundle} to sort through
+	 */
+	public ConfigEditor(Class<E> type, final Bundle<E> bundle) {
+		this.setLayout(new BoxLayout(this, BoxLayout.PAGE_AXIS));
+
+		items = ConfigItem.getItems(type, bundle);
+		for (ConfigItem<E> item : items) {
+			this.add(item);
+		}
+
+		addButton("Reset", new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				for (ConfigItem<E> item : items) {
+					item.reload();
+				}
+			}
+		});
+
+		addButton("Default", new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				Object snap = bundle.takeSnapshot();
+				bundle.reload(true);
+				for (ConfigItem<E> item : items) {
+					item.reload();
+				}
+				bundle.reload(false);
+				bundle.restoreSnapshot(snap);
+			}
+		});
+
+		addButton("Save", new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				for (ConfigItem<E> item : items) {
+					item.save();
+				}
+
+				try {
+					bundle.updateFile();
+				} catch (IOException e1) {
+					e1.printStackTrace();
+				}
+			}
+		});
+	}
+
+	/**
+	 * Add an action button for this action.
+	 * 
+	 * @param title
+	 *            the action title
+	 * @param listener
+	 *            the action
+	 */
+	private void addButton(String title, ActionListener listener) {
+		JButton button = new JButton(title);
+		button.addActionListener(listener);
+
+		JPanel panel = new JPanel();
+		panel.setLayout(new BorderLayout());
+		panel.setBorder(new EmptyBorder(2, 10, 2, 10));
+		panel.add(button, BorderLayout.CENTER);
+
+		this.add(panel);
+	}
+}
diff --git a/src/be/nikiroo/utils/ui/ConfigItem.java b/src/be/nikiroo/utils/ui/ConfigItem.java
new file mode 100644
index 0000000..3593d7c
--- /dev/null
+++ b/src/be/nikiroo/utils/ui/ConfigItem.java
@@ -0,0 +1,86 @@
+package be.nikiroo.utils.ui;
+
+import java.awt.BorderLayout;
+import java.awt.Dimension;
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+import javax.swing.JTextField;
+import javax.swing.border.EmptyBorder;
+
+import be.nikiroo.utils.resources.Bundle;
+
+/**
+ * A graphical item that reflect a configuration option from the given
+ * {@link Bundle}.
+ * 
+ * @author niki
+ *
+ * @param <E>
+ *            the type of {@link Bundle} to edit
+ */
+public class ConfigItem<E extends Enum<E>> extends JPanel {
+	private static final long serialVersionUID = 1L;
+	private final Bundle<E> bundle;
+	private final E id;
+	private String value;
+
+	private JTextField valueField;
+
+	public ConfigItem(Class<E> type, Bundle<E> bundle, E id) {
+		this.bundle = bundle;
+		this.id = id;
+
+		this.setLayout(new BorderLayout());
+		this.setBorder(new EmptyBorder(2, 10, 2, 10));
+
+		JLabel nameLabel = new JLabel(id.toString());
+		nameLabel.setPreferredSize(new Dimension(400, 0));
+		this.add(nameLabel, BorderLayout.WEST);
+
+		valueField = new JTextField();
+		valueField.setText(value);
+
+		reload();
+		this.add(valueField, BorderLayout.CENTER);
+	}
+
+	/**
+	 * Reload the value from the {@link Bundle}.
+	 */
+	public void reload() {
+		value = bundle.getString(id);
+		valueField.setText(value);
+	}
+
+	/**
+	 * Save the current value to the {@link Bundle}.
+	 */
+	public void save() {
+		value = valueField.getText();
+		bundle.setString(id, value);
+	}
+
+	/**
+	 * Create a list of {@link ConfigItem}, one for each of the item in the
+	 * given {@link Bundle}.
+	 * 
+	 * @param type
+	 *            a class instance of the item type to work on
+	 * @param bundle
+	 *            the {@link Bundle} to sort through
+	 * 
+	 * @return the list
+	 */
+	static public <E extends Enum<E>> List<ConfigItem<E>> getItems(
+			Class<E> type, Bundle<E> bundle) {
+		List<ConfigItem<E>> list = new ArrayList<ConfigItem<E>>();
+		for (E id : type.getEnumConstants()) {
+			list.add(new ConfigItem<E>(type, bundle, id));
+		}
+
+		return list;
+	}
+}