Java tutorial
/* * This file is part of the PDF Split And Merge source code * Created on 25/ott/2013 * Copyright 2013 by Andrea Vacondio (andrea.vacondio@gmail.com). * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package org.pdfsam.ui.io; import static org.apache.commons.lang3.StringUtils.EMPTY; import static org.apache.commons.lang3.StringUtils.defaultString; import java.io.File; import java.util.Map; import java.util.Optional; import javafx.css.PseudoClass; import javafx.scene.Node; import javafx.scene.control.Button; import javafx.scene.layout.HBox; import javafx.scene.layout.Priority; import org.pdfsam.i18n.DefaultI18nContext; import org.pdfsam.ui.commons.ValidableTextField; import org.pdfsam.ui.support.FXValidationSupport.ValidationState; import org.pdfsam.ui.support.Style; import org.pdfsam.ui.workspace.RestorableView; /** * {@link ValidableTextField} with attached a browse button to let the user select a file * * @author Andrea Vacondio * */ abstract class BrowsableField extends HBox implements RestorableView { private static final PseudoClass SELECTED_PSEUDOCLASS_STATE = PseudoClass.getPseudoClass("selected"); private Button browseButton; private ValidableTextField textField = new ValidableTextField(); private HBox validableContainer; private String browseWindowTitle = DefaultI18nContext.getInstance().i18n("Select"); public BrowsableField() { HBox.setHgrow(textField, Priority.ALWAYS); this.getStyleClass().add("browsable-field"); validableContainer = new HBox(textField); validableContainer.getStyleClass().add("validable-container"); textField.getStyleClass().add("validable-container-field"); browseButton = new Button(DefaultI18nContext.getInstance().i18n("Browse")); browseButton.getStyleClass().addAll(Style.BROWSE_BUTTON.css()); browseButton.prefHeightProperty().bind(validableContainer.heightProperty()); browseButton.setMaxHeight(USE_PREF_SIZE); browseButton.setMinHeight(USE_PREF_SIZE); HBox.setHgrow(validableContainer, Priority.ALWAYS); textField.validProperty().addListener((o, oldValue, newValue) -> { if (newValue == ValidationState.INVALID) { validableContainer.getStyleClass().addAll(Style.INVALID.css()); } else { validableContainer.getStyleClass().removeAll(Style.INVALID.css()); } }); textField.focusedProperty().addListener((o, oldVal, newVal) -> validableContainer .pseudoClassStateChanged(SELECTED_PSEUDOCLASS_STATE, newVal)); getChildren().addAll(validableContainer, browseButton); } /** * @return the internal {@link ValidableTextField} */ public ValidableTextField getTextField() { return textField; } public void saveStateTo(Map<String, String> data) { data.put(defaultString(getId()) + "browsableField", defaultString(textField.getText())); } public void restoreStateFrom(Map<String, String> data) { textField.setText(Optional.ofNullable(data.get(defaultString(getId()) + "browsableField")).orElse(EMPTY)); } public final void setGraphic(Node value) { validableContainer.getChildren().clear(); if (value != null) { validableContainer.getChildren().add(value); } validableContainer.getChildren().add(textField); } Button getBrowseButton() { return browseButton; } String getBrowseWindowTitle() { return browseWindowTitle; } public void setBrowseWindowTitle(String browseWindowTitle) { this.browseWindowTitle = browseWindowTitle; } /** * Set the text from the given input file * * @param inputFile */ abstract void setTextFromFile(File inputFile); }