+++ /dev/null
-/*
- * This file is part of lanterna (http://code.google.com/p/lanterna/).
- *
- * lanterna 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 Lesser 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/>.
- *
- * Copyright (C) 2010-2015 Martin
- */
-package com.googlecode.lanterna.gui2;
-
-import com.googlecode.lanterna.TerminalTextUtils;
-import com.googlecode.lanterna.TerminalPosition;
-import com.googlecode.lanterna.TerminalSize;
-import com.googlecode.lanterna.input.KeyStroke;
-
-import java.util.ArrayList;
-import java.util.List;
-import java.util.regex.Pattern;
-
-/**
- * This component keeps a text content that is editable by the user. A TextBox can be single line or multiline and lets
- * the user navigate the cursor in the text area by using the arrow keys, page up, page down, home and end. For
- * multi-line {@code TextBox}:es, scrollbars will be automatically displayed if needed.
- * <p>
- * Size-wise, a {@code TextBox} should be hard-coded to a particular size, it's not good at guessing how large it should
- * be. You can do this through the constructor.
- */
-public class TextBox extends AbstractInteractableComponent<TextBox> {
-
- /**
- * Enum value to force a {@code TextBox} to be either single line or multi line. This is usually auto-detected if
- * the text box has some initial content by scanning that content for \n characters.
- */
- public enum Style {
- /**
- * The {@code TextBox} contains a single line of text and is typically drawn on one row
- */
- SINGLE_LINE,
- /**
- * The {@code TextBox} contains a none, one or many lines of text and is normally drawn over multiple lines
- */
- MULTI_LINE,
- ;
- }
-
- private final List<String> lines;
- private final Style style;
-
- private TerminalPosition caretPosition;
- private boolean caretWarp;
- private boolean readOnly;
- private boolean horizontalFocusSwitching;
- private boolean verticalFocusSwitching;
- private int maxLineLength;
- private int longestRow;
- private char unusedSpaceCharacter;
- private Character mask;
- private Pattern validationPattern;
-
- /**
- * Default constructor, this creates a single-line {@code TextBox} of size 10 which is initially empty
- */
- public TextBox() {
- this(new TerminalSize(10, 1), "", Style.SINGLE_LINE);
- }
-
- /**
- * Constructor that creates a {@code TextBox} with an initial content and attempting to be big enough to display
- * the whole text at once without scrollbars
- * @param initialContent Initial content of the {@code TextBox}
- */
- public TextBox(String initialContent) {
- this(null, initialContent, initialContent.contains("\n") ? Style.MULTI_LINE : Style.SINGLE_LINE);
- }
-
- /**
- * Creates a {@code TextBox} that has an initial content and attempting to be big enough to display the whole text
- * at once without scrollbars.
- *
- * @param initialContent Initial content of the {@code TextBox}
- * @param style Forced style instead of auto-detecting
- */
- public TextBox(String initialContent, Style style) {
- this(null, initialContent, style);
- }
-
- /**
- * Creates a new empty {@code TextBox} with a specific size
- * @param preferredSize Size of the {@code TextBox}
- */
- public TextBox(TerminalSize preferredSize) {
- this(preferredSize, (preferredSize != null && preferredSize.getRows() > 1) ? Style.MULTI_LINE : Style.SINGLE_LINE);
- }
-
- /**
- * Creates a new empty {@code TextBox} with a specific size and style
- * @param preferredSize Size of the {@code TextBox}
- * @param style Style to use
- */
- public TextBox(TerminalSize preferredSize, Style style) {
- this(preferredSize, "", style);
- }
-
- /**
- * Creates a new empty {@code TextBox} with a specific size and initial content
- * @param preferredSize Size of the {@code TextBox}
- * @param initialContent Initial content of the {@code TextBox}
- */
- public TextBox(TerminalSize preferredSize, String initialContent) {
- this(preferredSize, initialContent, (preferredSize != null && preferredSize.getRows() > 1) || initialContent.contains("\n") ? Style.MULTI_LINE : Style.SINGLE_LINE);
- }
-
- /**
- * Main constructor of the {@code TextBox} which decides size, initial content and style
- * @param preferredSize Size of the {@code TextBox}
- * @param initialContent Initial content of the {@code TextBox}
- * @param style Style to use for this {@code TextBox}, instead of auto-detecting
- */
- public TextBox(TerminalSize preferredSize, String initialContent, Style style) {
- this.lines = new ArrayList<String>();
- this.style = style;
- this.readOnly = false;
- this.caretWarp = false;
- this.verticalFocusSwitching = true;
- this.horizontalFocusSwitching = (style == Style.SINGLE_LINE);
- this.caretPosition = TerminalPosition.TOP_LEFT_CORNER;
- this.maxLineLength = -1;
- this.longestRow = 1; //To fit the cursor
- this.unusedSpaceCharacter = ' ';
- this.mask = null;
- this.validationPattern = null;
- setText(initialContent);
- if (preferredSize == null) {
- preferredSize = new TerminalSize(Math.max(10, longestRow), lines.size());
- }
- setPreferredSize(preferredSize);
- }
-
- /**
- * Sets a pattern on which the content of the text box is to be validated. For multi-line TextBox:s, the pattern is
- * checked against each line individually, not the content as a whole. Partial matchings will not be allowed, the
- * whole pattern must match, however, empty lines will always be allowed. When the user tried to modify the content
- * of the TextBox in a way that does not match the pattern, the operation will be silently ignored. If you set this
- * pattern to {@code null}, all validation is turned off.
- * @param validationPattern Pattern to validate the lines in this TextBox against, or {@code null} to disable
- * @return itself
- */
- public synchronized TextBox setValidationPattern(Pattern validationPattern) {
- if(validationPattern != null) {
- for(String line: lines) {
- if(!validated(line)) {
- throw new IllegalStateException("TextBox validation pattern " + validationPattern + " does not match existing content");
- }
- }
- }
- this.validationPattern = validationPattern;
- return this;
- }
-
- /**
- * Updates the text content of the {@code TextBox} to the supplied string.
- * @param text New text to assign to the {@code TextBox}
- * @return Itself
- */
- public synchronized TextBox setText(String text) {
- String[] split = text.split("\n");
- lines.clear();
- longestRow = 1;
- for(String line : split) {
- addLine(line);
- }
- if(caretPosition.getRow() > lines.size() - 1) {
- caretPosition = caretPosition.withRow(lines.size() - 1);
- }
- if(caretPosition.getColumn() > lines.get(caretPosition.getRow()).length()) {
- caretPosition = caretPosition.withColumn(lines.get(caretPosition.getRow()).length());
- }
- invalidate();
- return this;
- }
-
- @Override
- public TextBoxRenderer getRenderer() {
- return (TextBoxRenderer)super.getRenderer();
- }
-
- /**
- * Adds a single line to the {@code TextBox} at the end, this only works when in multi-line mode
- * @param line Line to add at the end of the content in this {@code TextBox}
- * @return Itself
- */
- public synchronized TextBox addLine(String line) {
- StringBuilder bob = new StringBuilder();
- for(int i = 0; i < line.length(); i++) {
- char c = line.charAt(i);
- if(c == '\n' && style == Style.MULTI_LINE) {
- String string = bob.toString();
- int lineWidth = TerminalTextUtils.getColumnWidth(string);
- lines.add(string);
- if(longestRow < lineWidth + 1) {
- longestRow = lineWidth + 1;
- }
- addLine(line.substring(i + 1));
- return this;
- }
- else if(Character.isISOControl(c)) {
- continue;
- }
-
- bob.append(c);
- }
- String string = bob.toString();
- if(!validated(string)) {
- throw new IllegalStateException("TextBox validation pattern " + validationPattern + " does not match the supplied text");
- }
- int lineWidth = TerminalTextUtils.getColumnWidth(string);
- lines.add(string);
- if(longestRow < lineWidth + 1) {
- longestRow = lineWidth + 1;
- }
- invalidate();
- return this;
- }
-
- /**
- * Sets if the caret should jump to the beginning of the next line if right arrow is pressed while at the end of a
- * line. Similarly, pressing left arrow at the beginning of a line will make the caret jump to the end of the
- * previous line. This only makes sense for multi-line TextBox:es; for single-line ones it has no effect. By default
- * this is {@code false}.
- * @param caretWarp Whether the caret will warp at the beginning/end of lines
- * @return Itself
- */
- public TextBox setCaretWarp(boolean caretWarp) {
- this.caretWarp = caretWarp;
- return this;
- }
-
- /**
- * Checks whether caret warp mode is enabled or not. See {@code setCaretWarp} for more details.
- * @return {@code true} if caret warp mode is enabled
- */
- public boolean isCaretWarp() {
- return caretWarp;
- }
-
- /**
- * Returns the position of the caret, as a {@code TerminalPosition} where the row and columns equals the coordinates
- * in a multi-line {@code TextBox} and for single-line {@code TextBox} you can ignore the {@code row} component.
- * @return Position of the text input caret
- */
- public TerminalPosition getCaretPosition() {
- return caretPosition;
- }
-
- /**
- * Returns the text in this {@code TextBox}, for multi-line mode all lines will be concatenated together with \n as
- * separator.
- * @return The text inside this {@code TextBox}
- */
- public synchronized String getText() {
- StringBuilder bob = new StringBuilder(lines.get(0));
- for(int i = 1; i < lines.size(); i++) {
- bob.append("\n").append(lines.get(i));
- }
- return bob.toString();
- }
-
- /**
- * Helper method, it will return the content of the {@code TextBox} unless it's empty in which case it will return
- * the supplied default value
- * @param defaultValueIfEmpty Value to return if the {@code TextBox} is empty
- * @return Text in the {@code TextBox} or {@code defaultValueIfEmpty} is the {@code TextBox} is empty
- */
- public String getTextOrDefault(String defaultValueIfEmpty) {
- String text = getText();
- if(text.isEmpty()) {
- return defaultValueIfEmpty;
- }
- return text;
- }
-
- /**
- * Returns the current text mask, meaning the substitute to draw instead of the text inside the {@code TextBox}.
- * This is normally used for password input fields so the password isn't shown
- * @return Current text mask or {@code null} if there is no mask
- */
- public Character getMask() {
- return mask;
- }
-
- /**
- * Sets the current text mask, meaning the substitute to draw instead of the text inside the {@code TextBox}.
- * This is normally used for password input fields so the password isn't shown
- * @param mask New text mask or {@code null} if there is no mask
- * @return Itself
- */
- public TextBox setMask(Character mask) {
- if(mask != null && TerminalTextUtils.isCharCJK(mask)) {
- throw new IllegalArgumentException("Cannot use a CJK character as a mask");
- }
- this.mask = mask;
- invalidate();
- return this;
- }
-
- /**
- * Returns {@code true} if this {@code TextBox} is in read-only mode, meaning text input from the user through the
- * keyboard is prevented
- * @return {@code true} if this {@code TextBox} is in read-only mode
- */
- public boolean isReadOnly() {
- return readOnly;
- }
-
- /**
- * Sets the read-only mode of the {@code TextBox}, meaning text input from the user through the keyboard is
- * prevented. The user can still focus and scroll through the text in this mode.
- * @param readOnly If {@code true} then the {@code TextBox} will switch to read-only mode
- * @return Itself
- */
- public TextBox setReadOnly(boolean readOnly) {
- this.readOnly = readOnly;
- invalidate();
- return this;
- }
-
- /**
- * If {@code true}, the component will switch to the next available component above if the cursor is at the top of
- * the TextBox and the user presses the 'up' array key, or switch to the next available component below if the
- * cursor is at the bottom of the TextBox and the user presses the 'down' array key. The means that for single-line
- * TextBox:es, pressing up and down will always switch focus.
- * @return {@code true} if vertical focus switching is enabled
- */
- public boolean isVerticalFocusSwitching() {
- return verticalFocusSwitching;
- }
-
- /**
- * If set to {@code true}, the component will switch to the next available component above if the cursor is at the
- * top of the TextBox and the user presses the 'up' array key, or switch to the next available component below if
- * the cursor is at the bottom of the TextBox and the user presses the 'down' array key. The means that for
- * single-line TextBox:es, pressing up and down will always switch focus with this mode enabled.
- * @param verticalFocusSwitching If called with true, vertical focus switching will be enabled
- * @return Itself
- */
- public TextBox setVerticalFocusSwitching(boolean verticalFocusSwitching) {
- this.verticalFocusSwitching = verticalFocusSwitching;
- return this;
- }
-
- /**
- * If {@code true}, the TextBox will switch focus to the next available component to the left if the cursor in the
- * TextBox is at the left-most position (index 0) on the row and the user pressed the 'left' arrow key, or vice
- * versa for pressing the 'right' arrow key when the cursor in at the right-most position of the current row.
- * @return {@code true} if horizontal focus switching is enabled
- */
- public boolean isHorizontalFocusSwitching() {
- return horizontalFocusSwitching;
- }
-
- /**
- * If set to {@code true}, the TextBox will switch focus to the next available component to the left if the cursor
- * in the TextBox is at the left-most position (index 0) on the row and the user pressed the 'left' arrow key, or
- * vice versa for pressing the 'right' arrow key when the cursor in at the right-most position of the current row.
- * @param horizontalFocusSwitching If called with true, horizontal focus switching will be enabled
- * @return Itself
- */
- public TextBox setHorizontalFocusSwitching(boolean horizontalFocusSwitching) {
- this.horizontalFocusSwitching = horizontalFocusSwitching;
- return this;
- }
-
- /**
- * Returns the line on the specific row. For non-multiline TextBox:es, calling this with index set to 0 will return
- * the same as calling {@code getText()}. If the row index is invalid (less than zero or equals or larger than the
- * number of rows), this method will throw IndexOutOfBoundsException.
- * @param index
- * @return The line at the specified index, as a String
- * @throws IndexOutOfBoundsException if the row index is less than zero or too large
- */
- public synchronized String getLine(int index) {
- return lines.get(index);
- }
-
- /**
- * Returns the number of lines currently in this TextBox. For single-line TextBox:es, this will always return 1.
- * @return Number of lines of text currently in this TextBox
- */
- public synchronized int getLineCount() {
- return lines.size();
- }
-
- @Override
- protected TextBoxRenderer createDefaultRenderer() {
- return new DefaultTextBoxRenderer();
- }
-
- @Override
- public synchronized Result handleKeyStroke(KeyStroke keyStroke) {
- if(readOnly) {
- return handleKeyStrokeReadOnly(keyStroke);
- }
- String line = lines.get(caretPosition.getRow());
- switch(keyStroke.getKeyType()) {
- case Character:
- if(maxLineLength == -1 || maxLineLength > line.length() + 1) {
- line = line.substring(0, caretPosition.getColumn()) + keyStroke.getCharacter() + line.substring(caretPosition.getColumn());
- if(validated(line)) {
- lines.set(caretPosition.getRow(), line);
- caretPosition = caretPosition.withRelativeColumn(1);
- }
- }
- return Result.HANDLED;
- case Backspace:
- if(caretPosition.getColumn() > 0) {
- line = line.substring(0, caretPosition.getColumn() - 1) + line.substring(caretPosition.getColumn());
- if(validated(line)) {
- lines.set(caretPosition.getRow(), line);
- caretPosition = caretPosition.withRelativeColumn(-1);
- }
- }
- else if(style == Style.MULTI_LINE && caretPosition.getRow() > 0) {
- String concatenatedLines = lines.get(caretPosition.getRow() - 1) + line;
- if(validated(concatenatedLines)) {
- lines.remove(caretPosition.getRow());
- caretPosition = caretPosition.withRelativeRow(-1);
- caretPosition = caretPosition.withColumn(lines.get(caretPosition.getRow()).length());
- lines.set(caretPosition.getRow(), concatenatedLines);
- }
- }
- return Result.HANDLED;
- case Delete:
- if(caretPosition.getColumn() < line.length()) {
- line = line.substring(0, caretPosition.getColumn()) + line.substring(caretPosition.getColumn() + 1);
- if(validated(line)) {
- lines.set(caretPosition.getRow(), line);
- }
- }
- else if(style == Style.MULTI_LINE && caretPosition.getRow() < lines.size() - 1) {
- String concatenatedLines = line + lines.get(caretPosition.getRow() + 1);
- if(validated(concatenatedLines)) {
- lines.set(caretPosition.getRow(), concatenatedLines);
- lines.remove(caretPosition.getRow() + 1);
- }
- }
- return Result.HANDLED;
- case ArrowLeft:
- if(caretPosition.getColumn() > 0) {
- caretPosition = caretPosition.withRelativeColumn(-1);
- }
- else if(style == Style.MULTI_LINE && caretWarp && caretPosition.getRow() > 0) {
- caretPosition = caretPosition.withRelativeRow(-1);
- caretPosition = caretPosition.withColumn(lines.get(caretPosition.getRow()).length());
- }
- else if(horizontalFocusSwitching) {
- return Result.MOVE_FOCUS_LEFT;
- }
- return Result.HANDLED;
- case ArrowRight:
- if(caretPosition.getColumn() < lines.get(caretPosition.getRow()).length()) {
- caretPosition = caretPosition.withRelativeColumn(1);
- }
- else if(style == Style.MULTI_LINE && caretWarp && caretPosition.getRow() < lines.size() - 1) {
- caretPosition = caretPosition.withRelativeRow(1);
- caretPosition = caretPosition.withColumn(0);
- }
- else if(horizontalFocusSwitching) {
- return Result.MOVE_FOCUS_RIGHT;
- }
- return Result.HANDLED;
- case ArrowUp:
- if(caretPosition.getRow() > 0) {
- int trueColumnPosition = TerminalTextUtils.getColumnIndex(lines.get(caretPosition.getRow()), caretPosition.getColumn());
- caretPosition = caretPosition.withRelativeRow(-1);
- line = lines.get(caretPosition.getRow());
- if(trueColumnPosition > TerminalTextUtils.getColumnWidth(line)) {
- caretPosition = caretPosition.withColumn(line.length());
- }
- else {
- caretPosition = caretPosition.withColumn(TerminalTextUtils.getStringCharacterIndex(line, trueColumnPosition));
- }
- }
- else if(verticalFocusSwitching) {
- return Result.MOVE_FOCUS_UP;
- }
- return Result.HANDLED;
- case ArrowDown:
- if(caretPosition.getRow() < lines.size() - 1) {
- int trueColumnPosition = TerminalTextUtils.getColumnIndex(lines.get(caretPosition.getRow()), caretPosition.getColumn());
- caretPosition = caretPosition.withRelativeRow(1);
- line = lines.get(caretPosition.getRow());
- if(trueColumnPosition > TerminalTextUtils.getColumnWidth(line)) {
- caretPosition = caretPosition.withColumn(line.length());
- }
- else {
- caretPosition = caretPosition.withColumn(TerminalTextUtils.getStringCharacterIndex(line, trueColumnPosition));
- }
- }
- else if(verticalFocusSwitching) {
- return Result.MOVE_FOCUS_DOWN;
- }
- return Result.HANDLED;
- case End:
- caretPosition = caretPosition.withColumn(line.length());
- return Result.HANDLED;
- case Enter:
- if(style == Style.SINGLE_LINE) {
- return Result.MOVE_FOCUS_NEXT;
- }
- String newLine = line.substring(caretPosition.getColumn());
- String oldLine = line.substring(0, caretPosition.getColumn());
- if(validated(newLine) && validated(oldLine)) {
- lines.set(caretPosition.getRow(), oldLine);
- lines.add(caretPosition.getRow() + 1, newLine);
- caretPosition = caretPosition.withColumn(0).withRelativeRow(1);
- }
- return Result.HANDLED;
- case Home:
- caretPosition = caretPosition.withColumn(0);
- return Result.HANDLED;
- case PageDown:
- caretPosition = caretPosition.withRelativeRow(getSize().getRows());
- if(caretPosition.getRow() > lines.size() - 1) {
- caretPosition = caretPosition.withRow(lines.size() - 1);
- }
- if(lines.get(caretPosition.getRow()).length() < caretPosition.getColumn()) {
- caretPosition = caretPosition.withColumn(lines.get(caretPosition.getRow()).length());
- }
- return Result.HANDLED;
- case PageUp:
- caretPosition = caretPosition.withRelativeRow(-getSize().getRows());
- if(caretPosition.getRow() < 0) {
- caretPosition = caretPosition.withRow(0);
- }
- if(lines.get(caretPosition.getRow()).length() < caretPosition.getColumn()) {
- caretPosition = caretPosition.withColumn(lines.get(caretPosition.getRow()).length());
- }
- return Result.HANDLED;
- default:
- }
- return super.handleKeyStroke(keyStroke);
- }
-
- private boolean validated(String line) {
- return validationPattern == null || line.isEmpty() || validationPattern.matcher(line).matches();
- }
-
- private Result handleKeyStrokeReadOnly(KeyStroke keyStroke) {
- switch (keyStroke.getKeyType()) {
- case ArrowLeft:
- if(getRenderer().getViewTopLeft().getColumn() == 0 && horizontalFocusSwitching) {
- return Result.MOVE_FOCUS_LEFT;
- }
- getRenderer().setViewTopLeft(getRenderer().getViewTopLeft().withRelativeColumn(-1));
- return Result.HANDLED;
- case ArrowRight:
- if(getRenderer().getViewTopLeft().getColumn() + getSize().getColumns() == longestRow && horizontalFocusSwitching) {
- return Result.MOVE_FOCUS_RIGHT;
- }
- getRenderer().setViewTopLeft(getRenderer().getViewTopLeft().withRelativeColumn(1));
- return Result.HANDLED;
- case ArrowUp:
- if(getRenderer().getViewTopLeft().getRow() == 0 && verticalFocusSwitching) {
- return Result.MOVE_FOCUS_UP;
- }
- getRenderer().setViewTopLeft(getRenderer().getViewTopLeft().withRelativeRow(-1));
- return Result.HANDLED;
- case ArrowDown:
- if(getRenderer().getViewTopLeft().getRow() + getSize().getRows() == lines.size() && verticalFocusSwitching) {
- return Result.MOVE_FOCUS_DOWN;
- }
- getRenderer().setViewTopLeft(getRenderer().getViewTopLeft().withRelativeRow(1));
- return Result.HANDLED;
- case Home:
- getRenderer().setViewTopLeft(TerminalPosition.TOP_LEFT_CORNER);
- return Result.HANDLED;
- case End:
- getRenderer().setViewTopLeft(TerminalPosition.TOP_LEFT_CORNER.withRow(getLineCount() - getSize().getRows()));
- return Result.HANDLED;
- case PageDown:
- getRenderer().setViewTopLeft(getRenderer().getViewTopLeft().withRelativeRow(getSize().getRows()));
- return Result.HANDLED;
- case PageUp:
- getRenderer().setViewTopLeft(getRenderer().getViewTopLeft().withRelativeRow(-getSize().getRows()));
- return Result.HANDLED;
- default:
- }
- return super.handleKeyStroke(keyStroke);
- }
-
- /**
- * Helper interface that doesn't add any new methods but makes coding new text box renderers a little bit more clear
- */
- public interface TextBoxRenderer extends InteractableRenderer<TextBox> {
- TerminalPosition getViewTopLeft();
- void setViewTopLeft(TerminalPosition position);
- }
-
- /**
- * This is the default text box renderer that is used if you don't override anything. With this renderer, the text
- * box is filled with a solid background color and the text is drawn on top of it. Scrollbars are added for
- * multi-line text whenever the text inside the {@code TextBox} does not fit in the available area.
- */
- public static class DefaultTextBoxRenderer implements TextBoxRenderer {
- private TerminalPosition viewTopLeft;
- private ScrollBar verticalScrollBar;
- private ScrollBar horizontalScrollBar;
- private boolean hideScrollBars;
-
- /**
- * Default constructor
- */
- public DefaultTextBoxRenderer() {
- viewTopLeft = TerminalPosition.TOP_LEFT_CORNER;
- verticalScrollBar = new ScrollBar(Direction.VERTICAL);
- horizontalScrollBar = new ScrollBar(Direction.HORIZONTAL);
- hideScrollBars = false;
- }
-
- @Override
- public TerminalPosition getViewTopLeft() {
- return viewTopLeft;
- }
-
- @Override
- public void setViewTopLeft(TerminalPosition position) {
- if(position.getColumn() < 0) {
- position = position.withColumn(0);
- }
- if(position.getRow() < 0) {
- position = position.withRow(0);
- }
- viewTopLeft = position;
- }
-
- @Override
- public TerminalPosition getCursorLocation(TextBox component) {
- if(component.isReadOnly()) {
- return null;
- }
-
- //Adjust caret position if necessary
- TerminalPosition caretPosition = component.getCaretPosition();
- String line = component.getLine(caretPosition.getRow());
- caretPosition = caretPosition.withColumn(Math.min(caretPosition.getColumn(), line.length()));
-
- return caretPosition
- .withColumn(TerminalTextUtils.getColumnIndex(line, caretPosition.getColumn()))
- .withRelativeColumn(-viewTopLeft.getColumn())
- .withRelativeRow(-viewTopLeft.getRow());
- }
-
- @Override
- public TerminalSize getPreferredSize(TextBox component) {
- return new TerminalSize(component.longestRow, component.lines.size());
- }
-
- /**
- * Controls whether scrollbars should be visible or not when a multi-line {@code TextBox} has more content than
- * it can draw in the area it was assigned (default: false)
- * @param hideScrollBars If {@code true}, don't show scrollbars if the multi-line content is bigger than the
- * area
- */
- public void setHideScrollBars(boolean hideScrollBars) {
- this.hideScrollBars = hideScrollBars;
- }
-
- @Override
- public void drawComponent(TextGUIGraphics graphics, TextBox component) {
- TerminalSize realTextArea = graphics.getSize();
- if(realTextArea.getRows() == 0 || realTextArea.getColumns() == 0) {
- return;
- }
- boolean drawVerticalScrollBar = false;
- boolean drawHorizontalScrollBar = false;
- int textBoxLineCount = component.getLineCount();
- if(!hideScrollBars && textBoxLineCount > realTextArea.getRows() && realTextArea.getColumns() > 1) {
- realTextArea = realTextArea.withRelativeColumns(-1);
- drawVerticalScrollBar = true;
- }
- if(!hideScrollBars && component.longestRow > realTextArea.getColumns() && realTextArea.getRows() > 1) {
- realTextArea = realTextArea.withRelativeRows(-1);
- drawHorizontalScrollBar = true;
- if(textBoxLineCount > realTextArea.getRows() && realTextArea.getRows() == graphics.getSize().getRows()) {
- realTextArea = realTextArea.withRelativeColumns(-1);
- drawVerticalScrollBar = true;
- }
- }
-
- drawTextArea(graphics.newTextGraphics(TerminalPosition.TOP_LEFT_CORNER, realTextArea), component);
-
- //Draw scrollbars, if any
- if(drawVerticalScrollBar) {
- verticalScrollBar.setViewSize(realTextArea.getRows());
- verticalScrollBar.setScrollMaximum(textBoxLineCount);
- verticalScrollBar.setScrollPosition(viewTopLeft.getRow());
- verticalScrollBar.draw(graphics.newTextGraphics(
- new TerminalPosition(graphics.getSize().getColumns() - 1, 0),
- new TerminalSize(1, graphics.getSize().getRows() - 1)));
- }
- if(drawHorizontalScrollBar) {
- horizontalScrollBar.setViewSize(realTextArea.getColumns());
- horizontalScrollBar.setScrollMaximum(component.longestRow - 1);
- horizontalScrollBar.setScrollPosition(viewTopLeft.getColumn());
- horizontalScrollBar.draw(graphics.newTextGraphics(
- new TerminalPosition(0, graphics.getSize().getRows() - 1),
- new TerminalSize(graphics.getSize().getColumns() - 1, 1)));
- }
- }
-
- private void drawTextArea(TextGUIGraphics graphics, TextBox component) {
- TerminalSize textAreaSize = graphics.getSize();
- if(viewTopLeft.getColumn() + textAreaSize.getColumns() > component.longestRow) {
- viewTopLeft = viewTopLeft.withColumn(component.longestRow - textAreaSize.getColumns());
- if(viewTopLeft.getColumn() < 0) {
- viewTopLeft = viewTopLeft.withColumn(0);
- }
- }
- if(viewTopLeft.getRow() + textAreaSize.getRows() > component.getLineCount()) {
- viewTopLeft = viewTopLeft.withRow(component.getLineCount() - textAreaSize.getRows());
- if(viewTopLeft.getRow() < 0) {
- viewTopLeft = viewTopLeft.withRow(0);
- }
- }
- if (component.isFocused()) {
- graphics.applyThemeStyle(graphics.getThemeDefinition(TextBox.class).getActive());
- }
- else {
- graphics.applyThemeStyle(graphics.getThemeDefinition(TextBox.class).getNormal());
- }
- graphics.fill(component.unusedSpaceCharacter);
-
- if(!component.isReadOnly()) {
- //Adjust caret position if necessary
- TerminalPosition caretPosition = component.getCaretPosition();
- String caretLine = component.getLine(caretPosition.getRow());
- caretPosition = caretPosition.withColumn(Math.min(caretPosition.getColumn(), caretLine.length()));
-
- //Adjust the view if necessary
- int trueColumnPosition = TerminalTextUtils.getColumnIndex(caretLine, caretPosition.getColumn());
- if (trueColumnPosition < viewTopLeft.getColumn()) {
- viewTopLeft = viewTopLeft.withColumn(trueColumnPosition);
- }
- else if (trueColumnPosition >= textAreaSize.getColumns() + viewTopLeft.getColumn()) {
- viewTopLeft = viewTopLeft.withColumn(trueColumnPosition - textAreaSize.getColumns() + 1);
- }
- if (caretPosition.getRow() < viewTopLeft.getRow()) {
- viewTopLeft = viewTopLeft.withRow(caretPosition.getRow());
- }
- else if (caretPosition.getRow() >= textAreaSize.getRows() + viewTopLeft.getRow()) {
- viewTopLeft = viewTopLeft.withRow(caretPosition.getRow() - textAreaSize.getRows() + 1);
- }
-
- //Additional corner-case for CJK characters
- if(trueColumnPosition - viewTopLeft.getColumn() == graphics.getSize().getColumns() - 1) {
- if(caretLine.length() > caretPosition.getColumn() &&
- TerminalTextUtils.isCharCJK(caretLine.charAt(caretPosition.getColumn()))) {
- viewTopLeft = viewTopLeft.withRelativeColumn(1);
- }
- }
- }
-
- for (int row = 0; row < textAreaSize.getRows(); row++) {
- int rowIndex = row + viewTopLeft.getRow();
- if(rowIndex >= component.lines.size()) {
- continue;
- }
- String line = component.lines.get(rowIndex);
- graphics.putString(0, row, TerminalTextUtils.fitString(line, viewTopLeft.getColumn(), textAreaSize.getColumns()));
- }
- }
- }
-}
git://git.nikiroo.be / jvcard.git / blobdiff