+++ /dev/null
-/**
- * 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 java.io.File;
-import java.util.ArrayList;
-import java.util.List;
-
-import jexer.bits.CellAttributes;
-import jexer.event.TKeypressEvent;
-import jexer.event.TMouseEvent;
-import static jexer.TKeypress.*;
-
-/**
- * TDirectoryList shows the files within a directory.
- */
-public class TDirectoryList extends TWidget {
-
- /**
- * Files in the directory.
- */
- private List<File> files;
-
- /**
- * Selected file.
- */
- private int selectedFile = -1;
-
- /**
- * Root path containing files to display.
- */
- public File path;
-
- /**
- * Vertical scrollbar.
- */
- private TVScroller vScroller;
-
- /**
- * Horizontal scrollbar.
- */
- private THScroller hScroller;
-
- /**
- * Maximum width of a single line.
- */
- private int maxLineWidth;
-
- /**
- * The action to perform when the user selects an item.
- */
- private TAction action = null;
-
- /**
- * Perform user selection action.
- */
- public void dispatch() {
- assert (selectedFile >= 0);
- assert (selectedFile < files.size());
- if (action != null) {
- action.DO();
- }
- }
-
- /**
- * Format one of the entries for drawing on the screen.
- *
- * @param index index into files
- * @return the line to draw
- */
- private String renderFile(int index) {
- File file = files.get(index);
- String name = file.getName();
- if (name.length() > 20) {
- name = name.substring(0, 17) + "...";
- }
- return String.format("%-20s %5dk", name, (file.length() / 1024));
- }
-
- /**
- * Resize for a new width/height.
- */
- public void reflow() {
-
- // Reset the lines
- selectedFile = -1;
- maxLineWidth = 0;
- files.clear();
-
- // Build a list of files in this directory
- File [] newFiles = path.listFiles();
- for (int i = 0; i < newFiles.length; i++) {
- if (newFiles[i].getName().startsWith(".")) {
- continue;
- }
- if (newFiles[i].isDirectory()) {
- continue;
- }
- files.add(newFiles[i]);
- }
-
- for (int i = 0; i < files.size(); i++) {
- String line = renderFile(i);
- if (line.length() > maxLineWidth) {
- maxLineWidth = line.length();
- }
- }
-
- // Start at the top
- if (vScroller == null) {
- vScroller = new TVScroller(this, getWidth() - 1, 0,
- getHeight() - 1);
- } else {
- vScroller.setX(getWidth() - 1);
- vScroller.setHeight(getHeight() - 1);
- }
- vScroller.setBottomValue(files.size() - getHeight() - 1);
- vScroller.setTopValue(0);
- vScroller.setValue(0);
- if (vScroller.getBottomValue() < 0) {
- vScroller.setBottomValue(0);
- }
- vScroller.setBigChange(getHeight() - 1);
-
- // Start at the left
- if (hScroller == null) {
- hScroller = new THScroller(this, 0, getHeight() - 1,
- getWidth() - 1);
- } else {
- hScroller.setY(getHeight() - 1);
- hScroller.setWidth(getWidth() - 1);
- }
- hScroller.setRightValue(maxLineWidth - getWidth() + 1);
- hScroller.setLeftValue(0);
- hScroller.setValue(0);
- if (hScroller.getRightValue() < 0) {
- hScroller.setRightValue(0);
- }
- hScroller.setBigChange(getWidth() - 1);
- }
-
- /**
- * Public constructor.
- *
- * @param parent parent widget
- * @param path directory path, must be a directory
- * @param x column relative to parent
- * @param y row relative to parent
- * @param width width of text area
- * @param height height of text area
- */
- public TDirectoryList(final TWidget parent, final String path, final int x,
- final int y, final int width, final int height) {
-
- this(parent, path, x, y, width, height, null);
- }
-
- /**
- * Public constructor.
- *
- * @param parent parent widget
- * @param path directory path, must be a directory
- * @param x column relative to parent
- * @param y row relative to parent
- * @param width width of text area
- * @param height height of text area
- * @param action action to perform when an item is selected
- */
- public TDirectoryList(final TWidget parent, final String path, final int x,
- final int y, final int width, final int height, final TAction action) {
-
- this.path = new File(path);
- this.action = action;
- files = new ArrayList<File>();
- reflow();
- }
-
- /**
- * Draw the files list.
- */
- @Override
- public void draw() {
- CellAttributes color = null;
- int begin = vScroller.getValue();
- int topY = 0;
- for (int i = begin; i < files.size() - 1; i++) {
- String line = renderFile(i);
- if (hScroller.getValue() < line.length()) {
- line = line.substring(hScroller.getValue());
- } else {
- line = "";
- }
- if (i == selectedFile) {
- color = getTheme().getColor("tdirectorylist.selected");
- } else if (isAbsoluteActive()) {
- color = getTheme().getColor("tdirectorylist");
- } else {
- color = getTheme().getColor("tdirectorylist.inactive");
- }
- String formatString = "%-" + Integer.toString(getWidth() - 1) + "s";
- getScreen().putStringXY(0, topY, String.format(formatString, line),
- color);
- topY++;
- if (topY >= getHeight() - 1) {
- break;
- }
- }
-
- // Pad the rest with blank lines
- for (int i = topY; i < getHeight() - 1; i++) {
- getScreen().hLineXY(0, i, getWidth() - 1, ' ', color);
- }
- }
-
- /**
- * Handle mouse press events.
- *
- * @param mouse mouse button press event
- */
- @Override
- public void onMouseDown(final TMouseEvent mouse) {
- if (mouse.isMouseWheelUp()) {
- vScroller.decrement();
- return;
- }
- if (mouse.isMouseWheelDown()) {
- vScroller.increment();
- return;
- }
-
- if ((mouse.getX() < getWidth() - 1)
- && (mouse.getY() < getHeight() - 1)) {
- if (vScroller.getValue() + mouse.getY() < files.size()) {
- selectedFile = vScroller.getValue() + mouse.getY();
- }
- path = files.get(selectedFile);
- dispatch();
- return;
- }
-
- // Pass to children
- super.onMouseDown(mouse);
- }
-
- /**
- * Handle mouse release events.
- *
- * @param mouse mouse button release event
- */
- @Override
- public void onMouseUp(final TMouseEvent mouse) {
- // Pass to children
- super.onMouseDown(mouse);
- }
-
- /**
- * Handle keystrokes.
- *
- * @param keypress keystroke event
- */
- @Override
- public void onKeypress(final TKeypressEvent keypress) {
- if (keypress.equals(kbLeft)) {
- hScroller.decrement();
- } else if (keypress.equals(kbRight)) {
- hScroller.increment();
- } else if (keypress.equals(kbUp)) {
- vScroller.decrement();
- } else if (keypress.equals(kbDown)) {
- vScroller.increment();
- } else if (keypress.equals(kbPgUp)) {
- vScroller.bigDecrement();
- } else if (keypress.equals(kbPgDn)) {
- vScroller.bigIncrement();
- } else if (keypress.equals(kbHome)) {
- vScroller.toTop();
- } else if (keypress.equals(kbEnd)) {
- vScroller.toBottom();
- } else {
- // Pass other keys (tab etc.) on
- super.onKeypress(keypress);
- }
- }
-
-}
git://git.nikiroo.be / nikiroo-utils.git / blobdiff