+++ /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.ttree;
-
-import jexer.TAction;
-import jexer.THScroller;
-import jexer.TKeypress;
-import jexer.TScrollableWidget;
-import jexer.TVScroller;
-import jexer.TWidget;
-import jexer.bits.StringUtils;
-import jexer.event.TKeypressEvent;
-import jexer.event.TMouseEvent;
-import jexer.event.TResizeEvent;
-import static jexer.TKeypress.*;
-
-/**
- * TTreeViewWidget wraps a tree view with horizontal and vertical scrollbars.
- */
-public class TTreeViewWidget extends TScrollableWidget {
-
- // ------------------------------------------------------------------------
- // Variables --------------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * The TTreeView
- */
- private TTreeView treeView;
-
- /**
- * If true, move the window to put the selected item in view. This
- * normally only happens once after setting treeRoot.
- */
- private boolean centerWindow = false;
-
- /**
- * Maximum width of a single line.
- */
- private int maxLineWidth;
-
- // ------------------------------------------------------------------------
- // Constructors -----------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * Public constructor.
- *
- * @param parent parent widget
- * @param x column relative to parent
- * @param y row relative to parent
- * @param width width of tree view
- * @param height height of tree view
- */
- public TTreeViewWidget(final TWidget parent, final int x, final int y,
- final int width, final int height) {
-
- this(parent, x, y, width, height, null);
- }
-
- /**
- * Public constructor.
- *
- * @param parent parent widget
- * @param x column relative to parent
- * @param y row relative to parent
- * @param width width of tree view
- * @param height height of tree view
- * @param action action to perform when an item is selected
- */
- public TTreeViewWidget(final TWidget parent, final int x, final int y,
- final int width, final int height, final TAction action) {
-
- super(parent, x, y, width, height);
-
- treeView = new TTreeView(this, 0, 0, getWidth() - 1, getHeight() - 1,
- action);
-
- vScroller = new TVScroller(this, getWidth() - 1, 0, getHeight() - 1);
- hScroller = new THScroller(this, 0, getHeight() - 1, getWidth() - 1);
-
- }
-
- // ------------------------------------------------------------------------
- // Event handlers ---------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * Handle window/screen resize events.
- *
- * @param event resize event
- */
- @Override
- public void onResize(final TResizeEvent event) {
- super.onResize(event);
-
- if (event.getType() == TResizeEvent.Type.WIDGET) {
- treeView.onResize(new TResizeEvent(TResizeEvent.Type.WIDGET,
- getWidth() - 1, getHeight() - 1));
- return;
- } else {
- super.onResize(event);
- }
- }
-
- /**
- * Handle mouse press events.
- *
- * @param mouse mouse button press event
- */
- @Override
- public void onMouseDown(final TMouseEvent mouse) {
- if (mouse.isMouseWheelUp()) {
- verticalDecrement();
- } else if (mouse.isMouseWheelDown()) {
- verticalIncrement();
- } else {
- // Pass to the TreeView or scrollbars
- super.onMouseDown(mouse);
- }
-
- // Update the view to reflect the new scrollbar positions
- treeView.setTopLine(getVerticalValue());
- treeView.setLeftColumn(getHorizontalValue());
- reflowData();
- }
-
- /**
- * Handle mouse release events.
- *
- * @param mouse mouse button release event
- */
- @Override
- public void onMouseUp(final TMouseEvent mouse) {
- // Pass to the TreeView or scrollbars
- super.onMouseUp(mouse);
-
- // Update the view to reflect the new scrollbar positions
- treeView.setTopLine(getVerticalValue());
- treeView.setLeftColumn(getHorizontalValue());
- reflowData();
- }
-
- /**
- * Handle mouse motion events.
- *
- * @param mouse mouse motion event
- */
- @Override
- public void onMouseMotion(final TMouseEvent mouse) {
- // Pass to the TreeView or scrollbars
- super.onMouseMotion(mouse);
-
- // Update the view to reflect the new scrollbar positions
- treeView.setTopLine(getVerticalValue());
- treeView.setLeftColumn(getHorizontalValue());
- reflowData();
- }
-
- /**
- * Handle keystrokes.
- *
- * @param keypress keystroke event
- */
- @Override
- public void onKeypress(final TKeypressEvent keypress) {
- if (keypress.equals(kbShiftLeft)
- || keypress.equals(kbCtrlLeft)
- || keypress.equals(kbAltLeft)
- ) {
- horizontalDecrement();
- } else if (keypress.equals(kbShiftRight)
- || keypress.equals(kbCtrlRight)
- || keypress.equals(kbAltRight)
- ) {
- horizontalIncrement();
- } else if (keypress.equals(kbShiftUp)
- || keypress.equals(kbCtrlUp)
- || keypress.equals(kbAltUp)
- ) {
- verticalDecrement();
- } else if (keypress.equals(kbShiftDown)
- || keypress.equals(kbCtrlDown)
- || keypress.equals(kbAltDown)
- ) {
- verticalIncrement();
- } else if (keypress.equals(kbShiftPgUp)
- || keypress.equals(kbCtrlPgUp)
- || keypress.equals(kbAltPgUp)
- ) {
- bigVerticalDecrement();
- } else if (keypress.equals(kbShiftPgDn)
- || keypress.equals(kbCtrlPgDn)
- || keypress.equals(kbAltPgDn)
- ) {
- bigVerticalIncrement();
- } else if (keypress.equals(kbPgDn)) {
- for (int i = 0; i < getHeight() - 2; i++) {
- treeView.onKeypress(new TKeypressEvent(TKeypress.kbDown));
- }
- reflowData();
- return;
- } else if (keypress.equals(kbPgUp)) {
- for (int i = 0; i < getHeight() - 2; i++) {
- treeView.onKeypress(new TKeypressEvent(TKeypress.kbUp));
- }
- reflowData();
- return;
- } else if (keypress.equals(kbHome)) {
- treeView.setSelected((TTreeItem) treeView.getChildren().get(0),
- false);
- treeView.setTopLine(0);
- reflowData();
- return;
- } else if (keypress.equals(kbEnd)) {
- treeView.setSelected((TTreeItem) treeView.getChildren().get(
- treeView.getChildren().size() - 1), true);
- reflowData();
- return;
- } else if (keypress.equals(kbTab)) {
- getParent().switchWidget(true);
- return;
- } else if (keypress.equals(kbShiftTab)
- || keypress.equals(kbBackTab)) {
- getParent().switchWidget(false);
- return;
- } else {
- treeView.onKeypress(keypress);
-
- // Update the scrollbars to reflect the new data position
- reflowData();
- return;
- }
-
- // Update the view to reflect the new scrollbar position
- treeView.setTopLine(getVerticalValue());
- treeView.setLeftColumn(getHorizontalValue());
- reflowData();
- }
-
- // ------------------------------------------------------------------------
- // TScrollableWidget ------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * Resize text and scrollbars for a new width/height.
- */
- @Override
- public void reflowData() {
- int selectedRow = 0;
- boolean foundSelectedRow = false;
-
- // Reset the keyboard list, expandTree() will recreate it.
- for (TWidget widget: treeView.getChildren()) {
- TTreeItem item = (TTreeItem) widget;
- item.keyboardPrevious = null;
- item.keyboardNext = null;
- }
-
- // Expand the tree into a linear list
- treeView.getChildren().clear();
- treeView.getChildren().addAll(treeView.getTreeRoot().expandTree("",
- true));
-
- // Locate the selected row and maximum line width
- for (TWidget widget: treeView.getChildren()) {
- TTreeItem item = (TTreeItem) widget;
-
- if (item == treeView.getSelected()) {
- foundSelectedRow = true;
- }
- if (!foundSelectedRow) {
- selectedRow++;
- }
-
- int lineWidth = StringUtils.width(item.getText())
- + item.getPrefix().length() + 4;
- if (lineWidth > maxLineWidth) {
- maxLineWidth = lineWidth;
- }
- }
-
- if ((centerWindow) && (foundSelectedRow)) {
- if ((selectedRow < getVerticalValue())
- || (selectedRow > getVerticalValue() + getHeight() - 2)
- ) {
- treeView.setTopLine(selectedRow);
- centerWindow = false;
- }
- }
- treeView.alignTree();
-
- // Rescale the scroll bars
- setVerticalValue(treeView.getTopLine());
- setBottomValue(treeView.getTotalLineCount() - (getHeight() - 1));
- if (getBottomValue() < getTopValue()) {
- setBottomValue(getTopValue());
- }
- if (getVerticalValue() > getBottomValue()) {
- setVerticalValue(getBottomValue());
- }
- setRightValue(maxLineWidth - 2);
- if (getHorizontalValue() > getRightValue()) {
- setHorizontalValue(getRightValue());
- }
-
- }
-
- // ------------------------------------------------------------------------
- // TTreeView --------------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * Get the underlying TTreeView.
- *
- * @return the TTreeView
- */
- public TTreeView getTreeView() {
- return treeView;
- }
-
- /**
- * Get the root of the tree.
- *
- * @return the root of the tree
- */
- public final TTreeItem getTreeRoot() {
- return treeView.getTreeRoot();
- }
-
- /**
- * Set the root of the tree.
- *
- * @param treeRoot the new root of the tree
- */
- public final void setTreeRoot(final TTreeItem treeRoot) {
- treeView.setTreeRoot(treeRoot);
- }
-
- /**
- * Set treeRoot.
- *
- * @param treeRoot ultimate root of tree
- * @param centerWindow if true, move the window to put the root in view
- */
- public void setTreeRoot(final TTreeItem treeRoot,
- final boolean centerWindow) {
-
- treeView.setTreeRoot(treeRoot);
- this.centerWindow = centerWindow;
- }
-
- /**
- * Get the tree view item that was selected.
- *
- * @return the selected item, or null if no item is selected
- */
- public final TTreeItem getSelected() {
- return treeView.getSelected();
- }
-
- /**
- * Set the new selected tree view item.
- *
- * @param item new item that became selected
- * @param centerWindow if true, move the window to put the selected into
- * view
- */
- public void setSelected(final TTreeItem item, final boolean centerWindow) {
- treeView.setSelected(item, centerWindow);
- }
-
- /**
- * Perform user selection action.
- */
- public void dispatch() {
- treeView.dispatch();
- }
-
-}
git://git.nikiroo.be / fanfix.git / blobdiff