List of usage examples for org.eclipse.swt.widgets Tree indexOf
public int indexOf(TreeColumn column)
From source file:org.eclipse.swt.snippets.Snippet202.java
public static void main(String[] args) { Display display = new Display(); final Shell shell = new Shell(display); shell.setText("Snippet 202"); shell.setLayout(new FillLayout()); final Tree tree = new Tree(shell, SWT.VIRTUAL | SWT.BORDER); tree.addListener(SWT.SetData, event -> { TreeItem item = (TreeItem) event.item; TreeItem parentItem = item.getParentItem(); String text = null;//from w ww . j av a 2 s. c o m if (parentItem == null) { text = "node " + tree.indexOf(item); } else { text = parentItem.getText() + " - " + parentItem.indexOf(item); } item.setText(text); item.setItemCount(10); }); tree.setItemCount(20); shell.setSize(400, 300); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); }
From source file:TreePopulateLazy.java
public static void main(String[] args) { Display display = new Display(); final Shell shell = new Shell(display); shell.setLayout(new FillLayout()); final Tree tree = new Tree(shell, SWT.VIRTUAL | SWT.BORDER); tree.addListener(SWT.SetData, new Listener() { public void handleEvent(Event event) { TreeItem item = (TreeItem) event.item; TreeItem parentItem = item.getParentItem(); String text = null;// w ww . j av a 2s . c om if (parentItem == null) { text = "node " + tree.indexOf(item); } else { text = parentItem.getText() + " - " + parentItem.indexOf(item); } item.setText(text); item.setItemCount(10); } }); tree.setItemCount(20); shell.setSize(400, 300); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); }
From source file:TreeItemLines.java
public static void main(String[] args) { Display display = new Display(); Shell shell = new Shell(display); shell.setText("Multiple lines in a TreeItem"); shell.setLayout(new FillLayout()); final Tree tree = new Tree(shell, SWT.MULTI | SWT.FULL_SELECTION); tree.setHeaderVisible(true);//w ww . jav a 2 s. c om tree.setLinesVisible(true); int columnCount = 4; for (int i = 0; i < columnCount; i++) { TreeColumn column = new TreeColumn(tree, SWT.NONE); column.setText("Column " + i); column.setWidth(100); } int itemCount = 3; for (int i = 0; i < itemCount; i++) { TreeItem item1 = new TreeItem(tree, SWT.NONE); item1.setText("item " + i); for (int c = 1; c < columnCount; c++) { item1.setText(c, "item [" + i + "-" + c + "]"); } for (int j = 0; j < itemCount; j++) { TreeItem item2 = new TreeItem(item1, SWT.NONE); item2.setText("item [" + i + " " + j + "]"); for (int c = 1; c < columnCount; c++) { item2.setText(c, "item [" + i + " " + j + "-" + c + "]"); } for (int k = 0; k < itemCount; k++) { TreeItem item3 = new TreeItem(item2, SWT.NONE); item3.setText("item [" + i + " " + j + " " + k + "]"); for (int c = 1; c < columnCount; c++) { item3.setText(c, "item [" + i + " " + j + " " + k + "-" + c + "]"); } } } } /* * NOTE: MeasureItem, PaintItem and EraseItem are called repeatedly. * Therefore, it is critical for performance that these methods be as * efficient as possible. */ Listener paintListener = new Listener() { public void handleEvent(Event event) { switch (event.type) { case SWT.MeasureItem: { TreeItem item = (TreeItem) event.item; String text = getText(item, event.index); Point size = event.gc.textExtent(text); event.width = size.x; event.height = Math.max(event.height, size.y); break; } case SWT.PaintItem: { TreeItem item = (TreeItem) event.item; String text = getText(item, event.index); Point size = event.gc.textExtent(text); int offset2 = event.index == 0 ? Math.max(0, (event.height - size.y) / 2) : 0; event.gc.drawText(text, event.x, event.y + offset2, true); break; } case SWT.EraseItem: { event.detail &= ~SWT.FOREGROUND; break; } } } String getText(TreeItem item, int column) { String text = item.getText(column); if (column != 0) { TreeItem parent = item.getParentItem(); int index = parent == null ? tree.indexOf(item) : parent.indexOf(item); if ((index + column) % 3 == 1) { text += "\nnew line"; } if ((index + column) % 3 == 2) { text += "\nnew line\nnew line"; } } return text; } }; tree.addListener(SWT.MeasureItem, paintListener); tree.addListener(SWT.PaintItem, paintListener); tree.addListener(SWT.EraseItem, paintListener); shell.setSize(600, 400); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); }
From source file:org.eclipse.swt.snippets.Snippet227.java
public static void main(String[] args) { Display display = new Display(); Shell shell = new Shell(display); shell.setText("Multiple lines in a TreeItem"); shell.setLayout(new FillLayout()); final Tree tree = new Tree(shell, SWT.MULTI | SWT.FULL_SELECTION); tree.setHeaderVisible(true);/* ww w . j a v a 2 s . c o m*/ tree.setLinesVisible(true); int columnCount = 4; for (int i = 0; i < columnCount; i++) { TreeColumn column = new TreeColumn(tree, SWT.NONE); column.setText("Column " + i); column.setWidth(100); } int itemCount = 3; for (int i = 0; i < itemCount; i++) { TreeItem item1 = new TreeItem(tree, SWT.NONE); item1.setText("item " + i); for (int c = 1; c < columnCount; c++) { item1.setText(c, "item [" + i + "-" + c + "]"); } for (int j = 0; j < itemCount; j++) { TreeItem item2 = new TreeItem(item1, SWT.NONE); item2.setText("item [" + i + " " + j + "]"); for (int c = 1; c < columnCount; c++) { item2.setText(c, "item [" + i + " " + j + "-" + c + "]"); } for (int k = 0; k < itemCount; k++) { TreeItem item3 = new TreeItem(item2, SWT.NONE); item3.setText("item [" + i + " " + j + " " + k + "]"); for (int c = 1; c < columnCount; c++) { item3.setText(c, "item [" + i + " " + j + " " + k + "-" + c + "]"); } } } } /* * NOTE: MeasureItem, PaintItem and EraseItem are called repeatedly. * Therefore, it is critical for performance that these methods be * as efficient as possible. */ Listener paintListener = new Listener() { @Override public void handleEvent(Event event) { switch (event.type) { case SWT.MeasureItem: { TreeItem item = (TreeItem) event.item; String text = getText(item, event.index); Point size = event.gc.textExtent(text); event.width = size.x; event.height = Math.max(event.height, size.y); break; } case SWT.PaintItem: { TreeItem item = (TreeItem) event.item; String text = getText(item, event.index); Point size = event.gc.textExtent(text); int offset2 = event.index == 0 ? Math.max(0, (event.height - size.y) / 2) : 0; event.gc.drawText(text, event.x, event.y + offset2, true); break; } case SWT.EraseItem: { event.detail &= ~SWT.FOREGROUND; break; } } } String getText(TreeItem item, int column) { String text = item.getText(column); if (column != 0) { TreeItem parent = item.getParentItem(); int index = parent == null ? tree.indexOf(item) : parent.indexOf(item); if ((index + column) % 3 == 1) { text += "\nnew line"; } if ((index + column) % 3 == 2) { text += "\nnew line\nnew line"; } } return text; } }; tree.addListener(SWT.MeasureItem, paintListener); tree.addListener(SWT.PaintItem, paintListener); tree.addListener(SWT.EraseItem, paintListener); shell.setSize(600, 400); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); }
From source file:org.eclipse.swt.snippets.Snippet360.java
public static void main(String[] args) { Display display = new Display(); Shell shell = new Shell(display); shell.setText("Snippet 360"); shell.setLayout(new GridLayout()); // create a a tree with 3 columns and fill with data final Tree tree = new Tree(shell, SWT.BORDER | SWT.MULTI | SWT.FULL_SELECTION); tree.setLayoutData(new GridData(GridData.FILL_BOTH)); tree.setHeaderVisible(true);// w w w. j a v a2 s . c o m TreeColumn column1 = new TreeColumn(tree, SWT.NONE); TreeColumn column2 = new TreeColumn(tree, SWT.NONE); TreeColumn column3 = new TreeColumn(tree, SWT.NONE); for (int i = 0; i < 9; i++) { TreeItem item = new TreeItem(tree, SWT.NONE); item.setText(new String[] { "root " + i + " 0", "root " + i + " 1", "root " + i + " 2" }); for (int j = 0; j < 9; j++) { TreeItem item2 = new TreeItem(item, SWT.NONE); item2.setText(new String[] { "child " + j + " 0", "child " + j + " 1", "child " + j + " 2" }); TreeItem current = item2; for (int k = 0; k < 5; k++) { TreeItem item3 = new TreeItem(current, SWT.NONE); item3.setText(new String[] { "descendent " + k + " 0", "descendent " + k + " 1", "descendent " + k + " 2" }); current = item3; } } } column1.setWidth(200); column2.setWidth(100); column3.setWidth(100); // create a TreeCursor to navigate around the tree final TreeCursor cursor = new TreeCursor(tree, SWT.NONE); // create an editor to edit the cell when the user hits "ENTER" // while over a cell in the tree final ControlEditor editor = new ControlEditor(cursor); editor.grabHorizontal = true; editor.grabVertical = true; cursor.addSelectionListener(new SelectionAdapter() { // when the TreeEditor is over a cell, select the corresponding row // in the tree @Override public void widgetSelected(SelectionEvent e) { tree.setSelection(new TreeItem[] { cursor.getRow() }); } // when the user hits "ENTER" in the TreeCursor, pop up a text // editor so that they can change the text of the cell @Override public void widgetDefaultSelected(SelectionEvent e) { final Text text = new Text(cursor, SWT.NONE); TreeItem row = cursor.getRow(); int column = cursor.getColumn(); text.setText(row.getText(column)); text.addKeyListener(keyPressedAdapter(event -> { // close the text editor and copy the data over // when the user hits "ENTER" if (event.character == SWT.CR) { TreeItem localRow = cursor.getRow(); int localColumn = cursor.getColumn(); localRow.setText(localColumn, text.getText()); text.dispose(); } // close the text editor when the user hits "ESC" if (event.character == SWT.ESC) { text.dispose(); } })); editor.setEditor(text); text.setFocus(); } }); // Hide the TreeCursor when the user hits the "MOD1" or "MOD2" key. // This allows the user to select multiple items in the tree. cursor.addKeyListener(keyPressedAdapter(e -> { if (e.keyCode == SWT.MOD1 || e.keyCode == SWT.MOD2 || (e.stateMask & SWT.MOD1) != 0 || (e.stateMask & SWT.MOD2) != 0) { cursor.setVisible(false); } })); // Show the TreeCursor when the user releases the "MOD2" or "MOD1" key. // This signals the end of the multiple selection task. tree.addKeyListener(new KeyListener() { @Override public void keyReleased(KeyEvent e) { if (e.keyCode == SWT.MOD1 && (e.stateMask & SWT.MOD2) != 0) return; if (e.keyCode == SWT.MOD2 && (e.stateMask & SWT.MOD1) != 0) return; if (e.keyCode != SWT.MOD1 && (e.stateMask & SWT.MOD1) != 0) return; if (e.keyCode != SWT.MOD2 && (e.stateMask & SWT.MOD2) != 0) return; TreeItem[] selection = tree.getSelection(); TreeItem row = (selection.length == 0) ? tree.getItem(tree.indexOf(tree.getTopItem())) : selection[0]; tree.showItem(row); cursor.setSelection(row, cursor.getColumn()); cursor.setVisible(true); cursor.setFocus(); } @Override public void keyPressed(KeyEvent e) { switch (e.keyCode) { case SWT.ARROW_LEFT: case SWT.ARROW_RIGHT: { if ((e.stateMask & SWT.MOD1) != 0) { TreeItem[] selection = tree.getSelection(); if (selection.length > 0) { selection[0].setExpanded(e.keyCode == SWT.ARROW_RIGHT); } break; } } } } }); shell.pack(); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); }
From source file:org.eclipse.swt.snippets.Snippet221.java
static TreeItem PreviousItem(Tree tree, TreeItem item) { if (item == null) return null; TreeItem childItem = item;/* www . j a v a 2s . c o m*/ TreeItem parentItem = childItem.getParentItem(); int index = parentItem == null ? tree.indexOf(childItem) : parentItem.indexOf(childItem); if (index == 0) { return parentItem; } else { TreeItem nextItem = parentItem == null ? tree.getItem(index - 1) : parentItem.getItem(index - 1); int count = nextItem.getItemCount(); while (count > 0 && nextItem.getExpanded()) { nextItem = nextItem.getItem(count - 1); count = nextItem.getItemCount(); } return nextItem; } }
From source file:org.eclipse.swt.snippets.Snippet254.java
static TreeItem nextItem(Tree tree, TreeItem item) { if (item == null) return null; if (item.getExpanded() && item.getItemCount() > 0) return item.getItem(0); TreeItem childItem = item;//from w w w . j ava 2s .c o m TreeItem parentItem = childItem.getParentItem(); int index = parentItem == null ? tree.indexOf(childItem) : parentItem.indexOf(childItem); int count = parentItem == null ? tree.getItemCount() : parentItem.getItemCount(); while (true) { if (index + 1 < count) return parentItem == null ? tree.getItem(index + 1) : parentItem.getItem(index + 1); if (parentItem == null) return null; childItem = parentItem; parentItem = childItem.getParentItem(); index = parentItem == null ? tree.indexOf(childItem) : parentItem.indexOf(childItem); count = parentItem == null ? tree.getItemCount() : parentItem.getItemCount(); } }
From source file:org.eclipse.swt.snippets.Snippet221.java
static TreeItem NextItem(Tree tree, TreeItem item) { if (item == null) return null; if (item.getExpanded()) { return item.getItem(0); } else {// w w w . j a va 2 s . c o m TreeItem childItem = item; TreeItem parentItem = childItem.getParentItem(); int index = parentItem == null ? tree.indexOf(childItem) : parentItem.indexOf(childItem); int count = parentItem == null ? tree.getItemCount() : parentItem.getItemCount(); while (true) { if (index + 1 < count) { return parentItem == null ? tree.getItem(index + 1) : parentItem.getItem(index + 1); } else { if (parentItem == null) { return null; } else { childItem = parentItem; parentItem = childItem.getParentItem(); index = parentItem == null ? tree.indexOf(childItem) : parentItem.indexOf(childItem); count = parentItem == null ? tree.getItemCount() : parentItem.getItemCount(); } } } } }