X-Git-Url: http://git.nikiroo.be/?a=blobdiff_plain;f=src%2Fjexer%2FTField.java;h=7c8b5bc415e62882a24941734da6ac213c706b75;hb=929409950e82914aa3cee323cfa7c5007585d2ea;hp=8055a3893563c7c248e10294de546820c6b4b9a3;hpb=0d47c5460c8e9d1198928308767a63ad35f46eb8;p=nikiroo-utils.git diff --git a/src/jexer/TField.java b/src/jexer/TField.java deleted file mode 100644 index 8055a38..0000000 --- a/src/jexer/TField.java +++ /dev/null @@ -1,440 +0,0 @@ -/** - * Jexer - Java Text User Interface - * - * License: LGPLv3 or later - * - * This module is licensed under the GNU Lesser General Public License - * Version 3. Please see the file "COPYING" in this directory for more - * information about the GNU Lesser General Public License Version 3. - * - * Copyright (C) 2015 Kevin Lamonte - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser 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 Lesser General Public - * License along with this program; if not, see - * http://www.gnu.org/licenses/, or write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA - * 02110-1301 USA - * - * @author Kevin Lamonte [kevin.lamonte@gmail.com] - * @version 1 - */ -package jexer; - -import jexer.bits.CellAttributes; -import jexer.bits.GraphicsChars; -import jexer.event.TKeypressEvent; -import jexer.event.TMouseEvent; -import static jexer.TKeypress.*; - -/** - * TField implements an editable text field. - */ -public class TField extends TWidget { - - /** - * Field text. - */ - protected String text = ""; - - /** - * Get field text. - * - * @return field text - */ - public final String getText() { - return text; - } - - /** - * If true, only allow enough characters that will fit in the width. If - * false, allow the field to scroll to the right. - */ - protected boolean fixed = false; - - /** - * Current editing position within text. - */ - protected int position = 0; - - /** - * Beginning of visible portion. - */ - protected int windowStart = 0; - - /** - * If true, new characters are inserted at position. - */ - protected boolean insertMode = true; - - /** - * Remember mouse state. - */ - protected TMouseEvent mouse; - - /** - * The action to perform when the user presses enter. - */ - protected TAction enterAction; - - /** - * The action to perform when the text is updated. - */ - protected TAction updateAction; - - /** - * Public constructor. - * - * @param parent parent widget - * @param x column relative to parent - * @param y row relative to parent - * @param width visible text width - * @param fixed if true, the text cannot exceed the display width - */ - public TField(final TWidget parent, final int x, final int y, - final int width, final boolean fixed) { - - this(parent, x, y, width, fixed, "", null, null); - } - - /** - * Public constructor. - * - * @param parent parent widget - * @param x column relative to parent - * @param y row relative to parent - * @param width visible text width - * @param fixed if true, the text cannot exceed the display width - * @param text initial text, default is empty string - */ - public TField(final TWidget parent, final int x, final int y, - final int width, final boolean fixed, final String text) { - - this(parent, x, y, width, fixed, text, null, null); - } - - /** - * Public constructor. - * - * @param parent parent widget - * @param x column relative to parent - * @param y row relative to parent - * @param width visible text width - * @param fixed if true, the text cannot exceed the display width - * @param text initial text, default is empty string - * @param enterAction function to call when enter key is pressed - * @param updateAction function to call when the text is updated - */ - public TField(final TWidget parent, final int x, final int y, - final int width, final boolean fixed, final String text, - final TAction enterAction, final TAction updateAction) { - - // Set parent and window - super(parent, x, y, width, 1); - - setCursorVisible(true); - this.fixed = fixed; - this.text = text; - this.enterAction = enterAction; - this.updateAction = updateAction; - } - - /** - * Returns true if the mouse is currently on the field. - * - * @return if true the mouse is currently on the field - */ - protected boolean mouseOnField() { - int rightEdge = getWidth() - 1; - if ((mouse != null) - && (mouse.getY() == 0) - && (mouse.getX() >= 0) - && (mouse.getX() <= rightEdge) - ) { - return true; - } - return false; - } - - /** - * Dispatch to the action function. - * - * @param enter if true, the user pressed Enter, else this was an update - * to the text. - */ - protected void dispatch(final boolean enter) { - if (enter) { - if (enterAction != null) { - enterAction.DO(); - } - } else { - if (updateAction != null) { - updateAction.DO(); - } - } - } - - /** - * Draw the text field. - */ - @Override - public void draw() { - CellAttributes fieldColor; - - if (isAbsoluteActive()) { - fieldColor = getTheme().getColor("tfield.active"); - } else { - fieldColor = getTheme().getColor("tfield.inactive"); - } - - int end = windowStart + getWidth(); - if (end > text.length()) { - end = text.length(); - } - getScreen().hLineXY(0, 0, getWidth(), GraphicsChars.HATCH, fieldColor); - getScreen().putStringXY(0, 0, text.substring(windowStart, end), - fieldColor); - - // Fix the cursor, it will be rendered by TApplication.drawAll(). - updateCursor(); - } - - /** - * Update the cursor position. - */ - protected void updateCursor() { - if ((position > getWidth()) && fixed) { - setCursorX(getWidth()); - } else if ((position - windowStart == getWidth()) && !fixed) { - setCursorX(getWidth() - 1); - } else { - setCursorX(position - windowStart); - } - } - - /** - * Handle mouse button presses. - * - * @param mouse mouse button event - */ - @Override - public void onMouseDown(final TMouseEvent mouse) { - this.mouse = mouse; - - if ((mouseOnField()) && (mouse.isMouse1())) { - // Move cursor - int deltaX = mouse.getX() - getCursorX(); - position += deltaX; - if (position > text.length()) { - position = text.length(); - } - updateCursor(); - return; - } - } - - /** - * Handle keystrokes. - * - * @param keypress keystroke event - */ - @Override - public void onKeypress(final TKeypressEvent keypress) { - - if (keypress.equals(kbLeft)) { - if (position > 0) { - position--; - } - if (fixed == false) { - if ((position == windowStart) && (windowStart > 0)) { - windowStart--; - } - } - return; - } - - if (keypress.equals(kbRight)) { - if (position < text.length()) { - position++; - if (fixed == true) { - if (position == getWidth()) { - position--; - } - } else { - if ((position - windowStart) == getWidth()) { - windowStart++; - } - } - } - return; - } - - if (keypress.equals(kbEnter)) { - dispatch(true); - return; - } - - if (keypress.equals(kbIns)) { - insertMode = !insertMode; - return; - } - if (keypress.equals(kbHome)) { - position = 0; - windowStart = 0; - return; - } - - if (keypress.equals(kbEnd)) { - position = text.length(); - if (fixed == true) { - if (position >= getWidth()) { - position = text.length() - 1; - } - } else { - windowStart = text.length() - getWidth() + 1; - if (windowStart < 0) { - windowStart = 0; - } - } - return; - } - - if (keypress.equals(kbDel)) { - if ((text.length() > 0) && (position < text.length())) { - text = text.substring(0, position) - + text.substring(position + 1); - } - return; - } - - if (keypress.equals(kbBackspace) || keypress.equals(kbBackspaceDel)) { - if (position > 0) { - position--; - text = text.substring(0, position) - + text.substring(position + 1); - } - if (fixed == false) { - if ((position == windowStart) - && (windowStart > 0) - ) { - windowStart--; - } - } - dispatch(false); - return; - } - - if (!keypress.getKey().isFnKey() - && !keypress.getKey().isAlt() - && !keypress.getKey().isCtrl() - ) { - // Plain old keystroke, process it - if ((position == text.length()) - && (text.length() < getWidth())) { - - // Append case - appendChar(keypress.getKey().getChar()); - } else if ((position < text.length()) - && (text.length() < getWidth())) { - - // Overwrite or insert a character - if (insertMode == false) { - // Replace character - text = text.substring(0, position) - + keypress.getKey().getChar() - + text.substring(position + 1); - position++; - } else { - // Insert character - insertChar(keypress.getKey().getChar()); - } - } else if ((position < text.length()) - && (text.length() >= getWidth())) { - - // Multiple cases here - if ((fixed == true) && (insertMode == true)) { - // Buffer is full, do nothing - } else if ((fixed == true) && (insertMode == false)) { - // Overwrite the last character, maybe move position - text = text.substring(0, position) - + keypress.getKey().getChar() - + text.substring(position + 1); - if (position < getWidth() - 1) { - position++; - } - } else if ((fixed == false) && (insertMode == false)) { - // Overwrite the last character, definitely move position - text = text.substring(0, position) - + keypress.getKey().getChar() - + text.substring(position + 1); - position++; - } else { - if (position == text.length()) { - // Append this character - appendChar(keypress.getKey().getChar()); - } else { - // Insert this character - insertChar(keypress.getKey().getChar()); - } - } - } else { - assert (!fixed); - - // Append this character - appendChar(keypress.getKey().getChar()); - } - dispatch(false); - return; - } - - // Pass to parent for the things we don't care about. - super.onKeypress(keypress); - } - - /** - * Append char to the end of the field. - * - * @param ch = char to append - */ - protected void appendChar(final char ch) { - // Append the LAST character - text += ch; - position++; - - assert (position == text.length()); - - if (fixed) { - if (position == getWidth()) { - position--; - } - } else { - if ((position - windowStart) == getWidth()) { - windowStart++; - } - } - } - - /** - * Insert char somewhere in the middle of the field. - * - * @param ch char to append - */ - protected void insertChar(final char ch) { - text = text.substring(0, position) + ch + text.substring(position); - position++; - if ((position - windowStart) == getWidth()) { - assert (!fixed); - windowStart++; - } - } - -}