diff options
Diffstat (limited to 'base/src/main/java/bjc/utils/gui/awt')
| -rw-r--r-- | base/src/main/java/bjc/utils/gui/awt/ExtensionFileFilter.java | 50 | ||||
| -rw-r--r-- | base/src/main/java/bjc/utils/gui/awt/SimpleFileDialog.java | 144 |
2 files changed, 194 insertions, 0 deletions
diff --git a/base/src/main/java/bjc/utils/gui/awt/ExtensionFileFilter.java b/base/src/main/java/bjc/utils/gui/awt/ExtensionFileFilter.java new file mode 100644 index 0000000..eb60ae2 --- /dev/null +++ b/base/src/main/java/bjc/utils/gui/awt/ExtensionFileFilter.java @@ -0,0 +1,50 @@ +package bjc.utils.gui.awt; + +import java.io.File; +import java.io.FilenameFilter; +import java.util.List; + +import bjc.utils.funcdata.FunctionalList; +import bjc.utils.funcdata.IList; + +/** + * Filter a set of filenames by extension. + * + * Built for AWT + * + * @author ben + * + */ +public class ExtensionFileFilter implements FilenameFilter { + /** + * The list of extensions to filter + */ + private final IList<String> extensions; + + /** + * Create a new filter only showing files with the specified extensions. + * + * @param exts + * The extensions to show in this filter. + */ + public ExtensionFileFilter(final List<String> exts) { + if (exts == null) throw new NullPointerException("Extensions must not be null"); + + extensions = new FunctionalList<>(exts); + } + + /** + * Create a new filter only showing files with the specified extensions. + * + * @param exts + * The extensions to show in this filter. + */ + public ExtensionFileFilter(final String... exts) { + extensions = new FunctionalList<>(exts); + } + + @Override + public boolean accept(final File directory, final String name) { + return extensions.anyMatch(name::endsWith); + } +}
\ No newline at end of file diff --git a/base/src/main/java/bjc/utils/gui/awt/SimpleFileDialog.java b/base/src/main/java/bjc/utils/gui/awt/SimpleFileDialog.java new file mode 100644 index 0000000..77a4a59 --- /dev/null +++ b/base/src/main/java/bjc/utils/gui/awt/SimpleFileDialog.java @@ -0,0 +1,144 @@ +package bjc.utils.gui.awt; + +import java.awt.FileDialog; +import java.awt.Frame; +import java.io.File; +import java.io.FilenameFilter; + +import bjc.utils.gui.SimpleDialogs; + +/** + * A simple way to get the user to pick a file + * + * Built for AWT. + * + * @author ben + * + */ +public class SimpleFileDialog { + /** + * Prompt the user to pick a file to open + * + * @param parent + * The parent of the file picker + * @param title + * The title of the file picker + * @return The file the user picked + */ + public static File getOpenFile(final Frame parent, final String title) { + return getOpenFile(parent, title, (String[]) null); + } + + /** + * Prompt the user to pick a file to open + * + * @param parent + * The parent of the file picker + * @param title + * The title of the file picker + * @param extensions + * The extensions to accept as valid + * @return The file the user picked + */ + public static File getOpenFile(final Frame parent, final String title, final String... extensions) { + if (parent == null) + throw new NullPointerException("Parent must not be null"); + else if (title == null) throw new NullPointerException("Title must not be null"); + + final FileDialog chooser = new FileDialog(parent, title, FileDialog.LOAD); + + if (extensions != null) { + final FilenameFilter filter = new ExtensionFileFilter(extensions); + chooser.setFilenameFilter(filter); + } + + chooser.setVisible(true); + + while (chooser.getFile() == null) { + SimpleDialogs.showError(parent, "File I/O Error", "Please choose a file to open."); + chooser.setVisible(true); + } + + return chooser.getFiles()[0]; + } + + /** + * Prompt the user to pick a file to open + * + * @param parent + * The parent of the file picker + * @param title + * The title of the file picker + * @param extensions + * The extensions to accept as valid + * @return The file the user picked + */ + public static File[] getOpenFiles(final Frame parent, final String title, final String... extensions) { + if (parent == null) + throw new NullPointerException("Parent must not be null"); + else if (title == null) throw new NullPointerException("Title must not be null"); + + final FileDialog chooser = new FileDialog(parent, title, FileDialog.LOAD); + + if (extensions != null) { + final FilenameFilter filter = new ExtensionFileFilter(extensions); + chooser.setFilenameFilter(filter); + } + + chooser.setMultipleMode(true); + chooser.setVisible(true); + + while (chooser.getFile() == null) { + SimpleDialogs.showError(parent, "File I/O Error", "Please choose a file to open."); + chooser.setVisible(true); + } + + return chooser.getFiles(); + } + + /** + * Prompt the user to pick a file to save + * + * @param parent + * The parent of the file picker + * @param title + * The title of the file picker + * @return The file the user picked + */ + public static File getSaveFile(final Frame parent, final String title) { + return getSaveFile(parent, title, (String[]) null); + } + + /** + * Prompt the user to pick a file to save + * + * @param parent + * The parent of the file picker + * @param title + * The title of the file picker + * @param extensions + * The extensions to accept as valid + * @return The file the user picked + */ + public static File getSaveFile(final Frame parent, final String title, final String... extensions) { + if (parent == null) + throw new NullPointerException("Parent must not be null"); + else if (title == null) throw new NullPointerException("Title must not be null"); + + final FileDialog chooser = new FileDialog(parent, title, FileDialog.SAVE); + + if (extensions != null) { + final FilenameFilter filter = new ExtensionFileFilter(extensions); + chooser.setFilenameFilter(filter); + } + + chooser.setVisible(true); + + while (chooser.getFile() == null) { + SimpleDialogs.showError(parent, "File I/O Error", "Please choose a file to save to."); + chooser.setVisible(true); + } + + return chooser.getFiles()[0]; + } +} |