com.kotcrab.vis.ui.widget.file.internal.FileSuggestionPopup Maven / Gradle / Ivy

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UI toolkit and flat design skin for scene2d.ui
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/*
 * Copyright 2014-2017 See AUTHORS file.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.kotcrab.vis.ui.widget.file.internal;

import com.badlogic.gdx.files.FileHandle;
import com.badlogic.gdx.scenes.scene2d.Actor;
import com.badlogic.gdx.scenes.scene2d.Stage;
import com.badlogic.gdx.scenes.scene2d.utils.ChangeListener;
import com.badlogic.gdx.utils.Array;
import com.kotcrab.vis.ui.widget.MenuItem;
import com.kotcrab.vis.ui.widget.VisTextField;
import com.kotcrab.vis.ui.widget.file.FileChooser;
import com.kotcrab.vis.ui.widget.file.FileTypeFilter;

/** @author Kotcrab */
public class FileSuggestionPopup extends AbstractSuggestionPopup {
	public FileSuggestionPopup (FileChooser chooser) {
		super(chooser);
	}

	public void pathFieldKeyTyped (Stage stage, Array files, VisTextField pathField) {
		if (pathField.getText().length() == 0) {
			remove();
			return;
		}

		int suggestions = createSuggestions(files, pathField);
		if (suggestions == 0) {
			remove();
			return;
		}

		showMenu(stage, pathField);
	}

	private int createSuggestions (Array files, final VisTextField fileNameField) {
		clearChildren();
		int suggestions = 0;
		for (final FileHandle file : files) {
			if (file.name().startsWith(fileNameField.getText()) && file.name().equals(fileNameField.getText()) == false) {
				MenuItem item = createMenuItem(getTrimmedName(file.name()));
				item.addListener(new ChangeListener() {
					@Override
					public void changed (ChangeEvent event, Actor actor) {
						chooser.highlightFiles(file);
					}
				});
				addItem(item);
				suggestions++;
			}

			if (suggestions == MAX_SUGGESTIONS) {
				break;
			}
		}

		if (chooser.getMode() == FileChooser.Mode.SAVE && suggestions == 0 //don't show matches when there are files that actually exist and matched previous search
				&& chooser.getActiveFileTypeFilterRule() != null && fileNameField.getText().matches(".*\\.")) {
			FileTypeFilter.Rule rule = chooser.getActiveFileTypeFilterRule();

			for (String extension : rule.getExtensions()) {
				MenuItem item = createMenuItem(fileNameField.getText() + extension);
				final String arbitraryPath = fileNameField.getText() + extension;
				item.addListener(new ChangeListener() {
					@Override
					public void changed (ChangeEvent event, Actor actor) {
						fileNameField.setText(arbitraryPath);
						fileNameField.setCursorAtTextEnd();
					}
				});
				addItem(item);
				suggestions++;
			}
		}

		return suggestions;
	}

	private String getTrimmedName (String name) {
		if (name.length() > 40) {
			return name.substring(0, 40) + "...";
		} else {
			return name;
		}
	}
}