Start splitting into maven modules

1 files changed, 198 insertions, 0 deletions

diff --git a/base/src/main/java/bjc/utils/gui/SimpleFileChooser.java b/base/src/main/java/bjc/utils/gui/SimpleFileChooser.java
new file mode 100644
index 0000000..7da0bd8
--- /dev/null
+++ b/base/src/main/java/bjc/utils/gui/SimpleFileChooser.java
@@ -0,0 +1,198 @@
+package bjc.utils.gui;
+
+import java.awt.Component;
+import java.io.File;
+
+import javax.swing.JFileChooser;
+
+import bjc.utils.exceptions.FileNotChosenException;
+
+/**
+ * Utility class for easily prompting user for files.
+ *
+ * Built for Swing.
+ *
+ * @author ben
+ *
+ */
+public class SimpleFileChooser {
+	private static File doOpenFile(final Component parent, final String title, final JFileChooser files) {
+		if (title == null) throw new NullPointerException("Title must not be null");
+
+		files.setDialogTitle(title);
+
+		boolean success = false;
+
+		while (!success) {
+			try {
+				maybeDoOpenFile(parent, files);
+
+				success = true;
+			} catch (final FileNotChosenException fncx) {
+				// We don't care about specifics
+				SimpleDialogs.showError(parent, "I/O Error", "Please pick a file to open");
+			}
+		}
+
+		return files.getSelectedFile();
+	}
+
+	private static File doSaveFile(final Component parent, final String title, final JFileChooser files) {
+		if (title == null) throw new NullPointerException("Title must not be null");
+
+		files.setDialogTitle(title);
+
+		final boolean success = false;
+
+		while (!success) {
+			try {
+				maybeDoSaveFile(parent, files);
+
+				return files.getSelectedFile();
+			} catch (final FileNotChosenException fncex) {
+				// We don't care about specifics
+				SimpleDialogs.showError(parent, "I/O Error", "Please pick a file to save to");
+			}
+		}
+	}
+
+	/**
+	 * Prompt the user with a "Open File..." dialog. Keeps prompting them
+	 * until they pick a file.
+	 *
+	 * @param parent
+	 *                The component to use as the parent for the dialog.
+	 * @param title
+	 *                The title of the dialog to prompt with.
+	 * @return The file the user has chosen.
+	 */
+	public static File getOpenFile(final Component parent, final String title) {
+		final JFileChooser files = new JFileChooser();
+
+		return doOpenFile(parent, title, files);
+	}
+
+	/**
+	 * Prompt the user with a "Open File..." dialog. Keeps prompting them
+	 * until they pick a file.
+	 *
+	 * @param parent
+	 *                The component to use as the parent for the dialog.
+	 * @param title
+	 *                The title of the dialog to prompt with.
+	 * @param extensions
+	 *                The list of file extensions the file should have.
+	 * @return The file the user has chosen.
+	 */
+	public static File getOpenFile(final Component parent, final String title, final String... extensions) {
+		final JFileChooser files = new JFileChooser();
+
+		files.addChoosableFileFilter(new ExtensionFileFilter(extensions));
+
+		return doOpenFile(parent, title, files);
+	}
+
+	/**
+	 * Prompt the user with a "Save File..." dialog.
+	 *
+	 * @param parent
+	 *                The component to use as the parent for the dialog.
+	 * @param title
+	 *                The title of the dialog to prompt with.
+	 * @return The file the user chose.
+	 */
+	public static File getSaveFile(final Component parent, final String title) {
+		final JFileChooser files = new JFileChooser();
+
+		return doSaveFile(parent, title, files);
+	}
+
+	/**
+	 * Prompt the user with a "Save File..." dialog.
+	 *
+	 * @param parent
+	 *                The component to use as the parent for the dialog.
+	 * @param title
+	 *                The title of the dialog to prompt with.
+	 * @param extensions
+	 *                The extensions of the files the user can choose.
+	 * @return The file the user chose.
+	 */
+	public static File getSaveFile(final Component parent, final String title, final String... extensions) {
+		final JFileChooser files = new JFileChooser();
+
+		files.addChoosableFileFilter(new ExtensionFileFilter(extensions));
+
+		return doSaveFile(parent, title, files);
+	}
+
+	private static void maybeDoOpenFile(final Component parent, final JFileChooser files)
+			throws FileNotChosenException {
+		if (parent == null)
+			throw new NullPointerException("Parent must not be null");
+		else if (files == null) throw new NullPointerException("File chooser must not be null");
+
+		final int result = files.showSaveDialog(parent);
+
+		if (result != JFileChooser.APPROVE_OPTION) throw new FileNotChosenException();
+	}
+
+	private static void maybeDoSaveFile(final Component parent, final JFileChooser files)
+			throws FileNotChosenException {
+		if (parent == null)
+			throw new NullPointerException("Parent must not be null");
+		else if (files == null) throw new NullPointerException("File chooser must not be null");
+
+		final int result = files.showSaveDialog(parent);
+
+		if (result != JFileChooser.APPROVE_OPTION) throw new FileNotChosenException();
+	}
+
+	/**
+	 * Prompt the user with a "Open File..." dialog.
+	 *
+	 * @param parent
+	 *                The component to use as the parent for the dialog.
+	 * @param title
+	 *                The title of the dialog to prompt with.
+	 * @return The file if the user chose one or null if they didn't.
+	 */
+	public static File maybeOpenFile(final Component parent, final String title) {
+		if (title == null) throw new NullPointerException("Title must not be null");
+
+		final JFileChooser files = new JFileChooser();
+		files.setDialogTitle(title);
+
+		try {
+			maybeDoOpenFile(parent, files);
+		} catch (final FileNotChosenException fncex) {
+			// We don't care about specifics
+		}
+
+		return files.getSelectedFile();
+	}
+
+	/**
+	 * Prompt the user with a "Save File..." dialog.
+	 *
+	 * @param parent
+	 *                The component to use as the parent for the dialog.
+	 * @param title
+	 *                The title of the dialog to prompt with.
+	 * @return The file if the user chose one or null if they didn't.
+	 */
+	public static File maybeSaveFile(final Component parent, final String title) {
+		if (title == null) throw new NullPointerException("Title must not be null");
+
+		final JFileChooser files = new JFileChooser();
+		files.setDialogTitle(title);
+
+		try {
+			maybeDoSaveFile(parent, files);
+		} catch (final FileNotChosenException fncex) {
+			// We don't care about specifics
+		}
+
+		return files.getSelectedFile();
+	}
+}