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/*
* #%L
* SciJava Common shared library for SciJava software.
* %%
* Copyright (C) 2009 - 2026 SciJava developers.
* %%
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
* #L%
*/
package org.scijava.ui;
import java.io.File;
import java.io.FileFilter;
import java.util.Arrays;
import java.util.List;
import org.scijava.Disposable;
import org.scijava.display.Display;
import org.scijava.plugin.Plugin;
import org.scijava.plugin.RichPlugin;
import org.scijava.ui.console.ConsolePane;
import org.scijava.ui.viewer.DisplayWindow;
import org.scijava.widget.FileWidget;
import org.scijava.widget.WidgetStyle;
/**
* An end-user SciJava application user interface.
* <p>
* UIs discoverable at runtime must implement this interface and be annotated
* with @{@link Plugin} with attribute {@link Plugin#type()} =
* {@link UserInterface}.class. While it possible to create a UI merely by
* implementing this interface, it is encouraged to instead extend
* {@link AbstractUserInterface}, for convenience.
* </p>
*
* @author Curtis Rueden
* @see Plugin
* @see UIService
*/
public interface UserInterface extends RichPlugin, Disposable {
/**
* Shows the UI.
* <p>
* Note that the actual UI components are created lazily when this method is
* called, rather then upon the UI's initial construction.
* </p>
*/
void show();
/** Whether this UI is visible onscreen. */
boolean isVisible();
/** Shows the object onscreen using an appropriate UI widget. */
default void show(final Object o) {
show(null, o);
}
/**
* Shows the object onscreen using an appropriate UI widget.
*
* @param name The name to use when displaying the object.
* @param o The object to be displayed.
*/
void show(String name, Object o);
/** Shows the display onscreen using an appropriate UI widget. */
void show(Display<?> display);
/**
* Gets the desktop, for use with multi-document interfaces (MDI), or null if
* not applicable.
*/
default Desktop getDesktop() {
return null;
}
/** Gets the main SciJava application frame, or null if not applicable. */
default ApplicationFrame getApplicationFrame() {
return null;
}
/** Gets the main SciJava toolbar, or null if not applicable. */
default ToolBar getToolBar() {
return null;
}
/** Gets the main SciJava status bar, or null if not applicable. */
default StatusBar getStatusBar() {
return null;
}
/** Gets the main SciJava console pane, or null if not applicable. */
default ConsolePane<?> getConsolePane() {
return null;
}
/**
* Gets the system clipboard associated with this UI, or null if not
* applicable.
*/
default SystemClipboard getSystemClipboard() {
return null;
}
/**
* Creates a new display window housing the given display, or null if not
* applicable.
*/
DisplayWindow createDisplayWindow(Display<?> display);
/**
* Creates a dialog prompter.
*
* @param message The message in the dialog itself.
* @param title The title of the dialog.
* @param messageType The type of message. This typically is rendered as an
* icon next to the message. For example,
* {@link DialogPrompt.MessageType#WARNING_MESSAGE} typically appears
* as an exclamation point.
* @param optionType The choices available when dismissing the dialog. These
* choices are typically rendered as buttons for the user to click.
* @return The newly created DialogPrompt object, or null if not applicable.
*/
DialogPrompt dialogPrompt(String message, String title,
DialogPrompt.MessageType messageType, DialogPrompt.OptionType optionType);
/**
* Prompts the user to choose a file.
*
* @param file The initial value displayed in the file chooser prompt.
* @param style The style of chooser to use:
* <ul>
* <li>{@link FileWidget#OPEN_STYLE}</li>
* <li>{@link FileWidget#SAVE_STYLE}</li>
* <li>{@link FileWidget#DIRECTORY_STYLE}</li>
* </ul>
* @return The {@link File} chosen by the user, or null if prompt is not
* available
*/
default File chooseFile(final File file, final String style) {
final String title;
// style can be a string with multiple comma-separated keywords
if (style == null) title = "Choose a file";
else if (WidgetStyle.isStyle(style, FileWidget.DIRECTORY_STYLE)) title = "Choose a directory";
else if (WidgetStyle.isStyle(style, FileWidget.FILE_AND_DIRECTORY_STYLE)) title = "Choose a file or directory";
else if (WidgetStyle.isStyle(style, FileWidget.OPEN_STYLE)) title = "Open";
else if (WidgetStyle.isStyle(style, FileWidget.SAVE_STYLE)) title = "Save";
else title = "Choose a file";
return chooseFile(title, file, style);
}
/**
* Prompts the user to choose a file.
*
* @param title Title to use in the file chooser dialog.
* @param file The initial value displayed in the file chooser prompt.
* @param style The style of chooser to use:
* <ul>
* <li>{@link FileWidget#OPEN_STYLE}</li>
* <li>{@link FileWidget#SAVE_STYLE}</li>
* <li>{@link FileWidget#DIRECTORY_STYLE}</li>
* <li>{@link FileWidget#FILE_AND_DIRECTORY_STYLE}</li>
* </ul>
* @return The {@link File} chosen by the user, or null if prompt is not
* available
*/
default File chooseFile(String title, File file, String style) {
throw new UnsupportedOperationException();
}
/**
* Prompts the user to choose a list of files.
*
* @param parent Parent folder for file selection
* @param files The initial value displayed in the file chooser prompt.
* @param filter A filter allowing to restrict file choice.
* @param style File selection style (files, directories, or both) and optional filters
* @return The selected {@link File}s chosen by the user, or null if the
* user cancels the prompt.
*/
default File[] chooseFiles(File parent, File[] files, FileFilter filter, String style) {
throw new UnsupportedOperationException();
}
/**
* Prompts the user to choose a list of files.
*
* @param parent Parent folder for file selection
* @param fileList The initial value displayed in the file chooser prompt.
* @param filter A filter allowing to restrict file choice.
* @param style File selection style (files, directories, or both) and optional filters
* @return The selected {@link File}s chosen by the user, or null if the
* user cancels the prompt.
*/
default List<File> chooseFiles(File parent, List<File> fileList, FileFilter filter, String style) {
final File[] initialFiles = fileList.toArray(new File[fileList.size()]);
final File[] chosenFiles = chooseFiles(parent, initialFiles, filter, style);
return chosenFiles == null ? null : Arrays.asList(chosenFiles);
}
/**
* Displays a popup context menu for the given display at the specified
* position.
*/
void showContextMenu(String menuRoot, Display<?> display, int x, int y);
/** Persists the application frame's current location. */
void saveLocation();
/** Restores the application frame's current location. */
void restoreLocation();
/** Returns true if this UI requires the EDT. */
boolean requiresEDT();
}