+++ /dev/null
-/*
- * Jexer - Java Text User Interface
- *
- * The MIT License (MIT)
- *
- * Copyright (C) 2019 Kevin Lamonte
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- * @author Kevin Lamonte [kevin.lamonte@gmail.com]
- * @version 1
- */
-package jexer;
-
-import java.util.List;
-
-import jexer.bits.CellAttributes;
-import jexer.bits.GraphicsChars;
-import jexer.event.TKeypressEvent;
-import jexer.event.TMouseEvent;
-import static jexer.TKeypress.*;
-
-/**
- * TComboBox implements a combobox containing a drop-down list and edit
- * field. Alt-Down can be used to show the drop-down.
- */
-public class TComboBox extends TWidget {
-
- // ------------------------------------------------------------------------
- // Variables --------------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * The list of items in the drop-down.
- */
- private TList list;
-
- /**
- * The edit field containing the value to return.
- */
- private TField field;
-
- /**
- * The action to perform when the user selects an item (clicks or enter).
- */
- private TAction updateAction = null;
-
- /**
- * If true, the field cannot be updated to a value not on the list.
- */
- private boolean limitToListValue = true;
-
- // ------------------------------------------------------------------------
- // Constructors -----------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * Public constructor.
- *
- * @param parent parent widget
- * @param x column relative to parent
- * @param y row relative to parent
- * @param width visible combobox width, including the down-arrow
- * @param values the possible values for the box, shown in the drop-down
- * @param valuesIndex the initial index in values, or -1 for no default
- * value
- * @param valuesHeight the height of the values drop-down when it is
- * visible
- * @param updateAction action to call when a new value is selected from
- * the list or enter is pressed in the edit field
- */
- public TComboBox(final TWidget parent, final int x, final int y,
- final int width, final List<String> values, final int valuesIndex,
- final int valuesHeight, final TAction updateAction) {
-
- // Set parent and window
- super(parent, x, y, width, 1);
-
- assert (values != null);
-
- this.updateAction = updateAction;
-
- field = addField(0, 0, width - 3, false, "", updateAction, null);
- if (valuesIndex >= 0) {
- field.setText(values.get(valuesIndex));
- }
-
- list = addList(values, 0, 1, width, valuesHeight,
- new TAction() {
- public void DO() {
- field.setText(list.getSelected());
- list.setEnabled(false);
- list.setVisible(false);
- TComboBox.this.setHeight(1);
- if (TComboBox.this.limitToListValue == false) {
- TComboBox.this.activate(field);
- }
- if (updateAction != null) {
- updateAction.DO();
- }
- }
- }
- );
- if (valuesIndex >= 0) {
- list.setSelectedIndex(valuesIndex);
- }
-
- list.setEnabled(false);
- list.setVisible(false);
- setHeight(1);
- if (limitToListValue) {
- field.setEnabled(false);
- } else {
- activate(field);
- }
- }
-
- // ------------------------------------------------------------------------
- // Event handlers ---------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * Returns true if the mouse is currently on the down arrow.
- *
- * @param mouse mouse event
- * @return true if the mouse is currently on the down arrow
- */
- private boolean mouseOnArrow(final TMouseEvent mouse) {
- if ((mouse.getY() == 0)
- && (mouse.getX() >= getWidth() - 3)
- && (mouse.getX() <= getWidth() - 1)
- ) {
- return true;
- }
- return false;
- }
-
- /**
- * Handle mouse down clicks.
- *
- * @param mouse mouse button down event
- */
- @Override
- public void onMouseDown(final TMouseEvent mouse) {
- if ((mouseOnArrow(mouse)) && (mouse.isMouse1())) {
- // Make the list visible or not.
- if (list.isActive()) {
- list.setEnabled(false);
- list.setVisible(false);
- setHeight(1);
- if (limitToListValue == false) {
- activate(field);
- }
- } else {
- list.setEnabled(true);
- list.setVisible(true);
- setHeight(list.getHeight() + 1);
- activate(list);
- }
- }
-
- // Pass to parent for the things we don't care about.
- super.onMouseDown(mouse);
- }
-
- /**
- * Handle keystrokes.
- *
- * @param keypress keystroke event
- */
- @Override
- public void onKeypress(final TKeypressEvent keypress) {
- if (keypress.equals(kbEsc)) {
- if (list.isActive()) {
- list.setEnabled(false);
- list.setVisible(false);
- setHeight(1);
- if (limitToListValue == false) {
- activate(field);
- }
- return;
- }
- }
-
- if (keypress.equals(kbAltDown)) {
- list.setEnabled(true);
- list.setVisible(true);
- setHeight(list.getHeight() + 1);
- activate(list);
- return;
- }
-
- if (keypress.equals(kbTab)
- || (keypress.equals(kbShiftTab))
- || (keypress.equals(kbBackTab))
- ) {
- if (list.isActive()) {
- list.setEnabled(false);
- list.setVisible(false);
- setHeight(1);
- if (limitToListValue == false) {
- activate(field);
- }
- return;
- }
- }
-
- // Pass to parent for the things we don't care about.
- super.onKeypress(keypress);
- }
-
- // ------------------------------------------------------------------------
- // TWidget ----------------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * Draw the combobox down arrow.
- */
- @Override
- public void draw() {
- CellAttributes comboBoxColor;
-
- if (!isAbsoluteActive()) {
- // We lost focus, turn off the list.
- if (list.isActive()) {
- list.setEnabled(false);
- list.setVisible(false);
- setHeight(1);
- if (limitToListValue == false) {
- activate(field);
- }
- }
- }
-
- if (isAbsoluteActive()) {
- comboBoxColor = getTheme().getColor("tcombobox.active");
- } else {
- comboBoxColor = getTheme().getColor("tcombobox.inactive");
- }
-
- putCharXY(getWidth() - 3, 0, GraphicsChars.DOWNARROWLEFT,
- comboBoxColor);
- putCharXY(getWidth() - 2, 0, GraphicsChars.DOWNARROW,
- comboBoxColor);
- putCharXY(getWidth() - 1, 0, GraphicsChars.DOWNARROWRIGHT,
- comboBoxColor);
- }
-
- // ------------------------------------------------------------------------
- // TComboBox --------------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * Get combobox text value.
- *
- * @return text in the edit field
- */
- public String getText() {
- return field.getText();
- }
-
- /**
- * Set combobox text value.
- *
- * @param text the new text in the edit field
- */
- public void setText(final String text) {
- setText(text, true);
- }
-
- /**
- * Set combobox text value.
- *
- * @param text the new text in the edit field
- * @param caseSensitive if true, perform a case-sensitive search for the
- * list item
- */
- public void setText(final String text, final boolean caseSensitive) {
- field.setText(text);
- for (int i = 0; i < list.getMaxSelectedIndex(); i++) {
- if (caseSensitive == true) {
- if (list.getListItem(i).equals(text)) {
- list.setSelectedIndex(i);
- return;
- }
- } else {
- if (list.getListItem(i).toLowerCase().equals(text.toLowerCase())) {
- list.setSelectedIndex(i);
- return;
- }
- }
- }
- list.setSelectedIndex(-1);
- }
-
- /**
- * Set combobox text to one of the list values.
- *
- * @param index the index in the list
- */
- public void setIndex(final int index) {
- list.setSelectedIndex(index);
- field.setText(list.getSelected());
- }
-
- /**
- * Get a copy of the list of strings to display.
- *
- * @return the list of strings
- */
- public final List<String> getList() {
- return list.getList();
- }
-
- /**
- * Set the new list of strings to display.
- *
- * @param list new list of strings
- */
- public final void setList(final List<String> list) {
- this.list.setList(list);
- field.setText("");
- }
-
-}
git://git.nikiroo.be / fanfix.git / blobdiff