diff options
Diffstat (limited to 'org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/views/memory/renderings/AsyncVirtualContentTableViewer.java')
| -rw-r--r-- | org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/views/memory/renderings/AsyncVirtualContentTableViewer.java | 483 |
1 files changed, 0 insertions, 483 deletions
diff --git a/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/views/memory/renderings/AsyncVirtualContentTableViewer.java b/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/views/memory/renderings/AsyncVirtualContentTableViewer.java deleted file mode 100644 index cb000c906..000000000 --- a/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/views/memory/renderings/AsyncVirtualContentTableViewer.java +++ /dev/null @@ -1,483 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2006, 2007 IBM Corporation and others. - * All rights reserved. This program and the accompanying materials - * are made available under the terms of the Eclipse Public License v1.0 - * which accompanies this distribution, and is available at - * http://www.eclipse.org/legal/epl-v10.html - * - * Contributors: - * IBM Corporation - initial API and implementation - *******************************************************************************/ - -package org.eclipse.debug.internal.ui.views.memory.renderings; - -import java.math.BigInteger; -import java.util.ArrayList; - -import org.eclipse.core.runtime.IProgressMonitor; -import org.eclipse.core.runtime.ISafeRunnable; -import org.eclipse.core.runtime.IStatus; -import org.eclipse.core.runtime.ListenerList; -import org.eclipse.core.runtime.SafeRunner; -import org.eclipse.core.runtime.Status; -import org.eclipse.debug.internal.ui.DebugUIPlugin; -import org.eclipse.debug.internal.ui.viewers.AsynchronousModel; -import org.eclipse.debug.internal.ui.viewers.AsynchronousTableViewer; -import org.eclipse.debug.internal.ui.viewers.model.provisional.IStatusMonitor; -import org.eclipse.debug.internal.ui.viewers.provisional.ILabelRequestMonitor; -import org.eclipse.debug.internal.ui.views.memory.MemoryViewUtil; -import org.eclipse.jface.viewers.CellEditor; -import org.eclipse.swt.events.SelectionAdapter; -import org.eclipse.swt.events.SelectionEvent; -import org.eclipse.swt.events.SelectionListener; -import org.eclipse.swt.widgets.Composite; -import org.eclipse.swt.widgets.ScrollBar; -import org.eclipse.swt.widgets.Table; -import org.eclipse.swt.widgets.TableColumn; -import org.eclipse.swt.widgets.TableItem; -import org.eclipse.ui.progress.UIJob; - -abstract public class AsyncVirtualContentTableViewer extends AsynchronousTableViewer { - - private Object fPendingTopIndexKey; - private ArrayList fTopIndexQueue = new ArrayList(); - - private boolean fPendingResizeColumns; - private ListenerList fVirtualContentListeners; - private SelectionListener fScrollSelectionListener; - private ListenerList fPresentationErrorListeners; - private Object fTopIndexKey; - - public static boolean DEBUG_DYNAMIC_LOADING = false; - - public AsyncVirtualContentTableViewer(Composite parent, int style) { - super(parent, style); - fVirtualContentListeners = new ListenerList(); - fPresentationErrorListeners = new ListenerList(); - initScrollBarListener(); - } - - private void initScrollBarListener() - { - ScrollBar scroll = getTable().getVerticalBar(); - fScrollSelectionListener = new SelectionAdapter() { - public void widgetSelected(SelectionEvent e) { - handleScrollBarSelection(); - }}; - scroll.addSelectionListener(fScrollSelectionListener); - } - - public void setTopIndex(Object key) - { - fPendingTopIndexKey = key; - attemptSetTopIndex(); - } - - protected Object getPendingSetTopIndexKey() - { - return fPendingTopIndexKey; - } - - protected void handlePresentationFailure(IStatusMonitor monitor, IStatus status) { - notifyPresentationError(monitor, status); - } - - public void disposeColumns() - { - // clean up old columns - TableColumn[] oldColumns = getTable().getColumns(); - - for (int i=0; i<oldColumns.length; i++) - { - oldColumns[i].dispose(); - } - } - - public void disposeCellEditors() - { - // clean up old cell editors - CellEditor[] oldCellEditors = getCellEditors(); - - if (oldCellEditors != null) - { - for (int i=0; i<oldCellEditors.length; i++) - { - oldCellEditors[i].dispose(); - } - } - } - - /** - * Resize column to the preferred size. - */ - public void resizeColumnsToPreferredSize() { - fPendingResizeColumns = true; - fPendingResizeColumns = attemptResizeColumnsToPreferredSize(); - } - - private boolean attemptResizeColumnsToPreferredSize() - { - if (fPendingResizeColumns) - { - if(!hasPendingUpdates()) { - UIJob job = new UIJob("packcolumns"){ //$NON-NLS-1$ - - public IStatus runInUIThread(IProgressMonitor monitor) { - Table table = getTable(); - - if (!table.isDisposed()) - { - // if table size is zero, the rendering has not been made visible - // cannot pack until the rendering is visible - if (table.getSize().x > 0) - { - TableColumn[] columns = table.getColumns(); - for (int i=0 ;i<columns.length-1; i++) - { - columns[i].pack(); - } - } - else - { - fPendingResizeColumns = true; - } - } - return Status.OK_STATUS; - }}; - job.setSystem(true); - job.schedule(); - return false; - } - } - return fPendingResizeColumns; - } - - /** - * Attempts to update any pending setTopIndex - * - * @param reveal whether to reveal the selection - */ - protected synchronized void attemptSetTopIndex() { - if (fPendingTopIndexKey != null) { - Object remaining = doAttemptSetTopIndex(fPendingTopIndexKey); - if (remaining == null) - { - fPendingTopIndexKey = remaining; - } - } - } - - private synchronized Object doAttemptSetTopIndex(final Object topIndexKey) - { - final int i = getVirtualContentModel().indexOfKey(topIndexKey); - if (i >= 0) - { - UIJob job = new UIJob("set top index"){ //$NON-NLS-1$ - - public IStatus runInUIThread(IProgressMonitor monitor) { - if (getTable().isDisposed()) - { - fTopIndexQueue.clear(); - return Status.OK_STATUS; - } - - int idx = getVirtualContentModel().indexOfKey(topIndexKey); - if (idx >= 0) - { - if (AsyncVirtualContentTableViewer.DEBUG_DYNAMIC_LOADING) - System.out.println("actual set top index: " + ((BigInteger)topIndexKey).toString(16)); //$NON-NLS-1$ - fPendingTopIndexKey = null; - setTopIndexKey(topIndexKey); - getTable().setTopIndex(idx); - tableTopIndexSetComplete(); - - if (getTable().getTopIndex() != idx ) - { - if (AsyncVirtualContentTableViewer.DEBUG_DYNAMIC_LOADING) - System.out.println(">>> FAILED set top index : " + ((BigInteger)topIndexKey).toString(16)); //$NON-NLS-1$ - - // only retry if we have pending updates - if (hasPendingUpdates()) - { - if (AsyncVirtualContentTableViewer.DEBUG_DYNAMIC_LOADING) - System.out.println(">>> Retry top index: " + ((BigInteger)topIndexKey).toString(16)); //$NON-NLS-1$ - - fPendingTopIndexKey = topIndexKey; - } - } - } - else - { - if (AsyncVirtualContentTableViewer.DEBUG_DYNAMIC_LOADING) - System.out.println("cannot find key, put it back to the queue: " + topIndexKey); //$NON-NLS-1$ - fPendingTopIndexKey = topIndexKey; - } - - // remove the top index key from queue when it is processed - removeKeyFromQueue(topIndexKey); - - return Status.OK_STATUS; - }}; - - // set top index does not happen immediately, keep track of - // all pending set top index - addKeyToQueue(topIndexKey); - - job.setSystem(true); - job.schedule(); - return topIndexKey; - } - return topIndexKey; - } - - protected void tableTopIndexSetComplete() - { - - } - - public void addVirtualContentListener(IVirtualContentListener listener) - { - fVirtualContentListeners.add(listener); - } - - public void removeVirtualContentListener(IVirtualContentListener listener) - { - fVirtualContentListeners.remove(listener); - } - - protected void notifyListenersAtBufferStart() - { - int topIdx = getTable().getTopIndex(); - Object[] listeners = fVirtualContentListeners.getListeners(); - - for (int i = 0; i < listeners.length; i++) { - final IVirtualContentListener listener = (IVirtualContentListener) listeners[i]; - if (topIdx < listener.getThreshold(IVirtualContentListener.BUFFER_START)) - { - SafeRunner.run(new ISafeRunnable() { - public void run() throws Exception { - listener.handledAtBufferStart(); - } - public void handleException(Throwable exception) { - DebugUIPlugin.log(exception); - } - }); - } - } - } - - protected void notifyListenersAtBufferEnd() - { - Object[] listeners = fVirtualContentListeners.getListeners(); - int topIdx = getTable().getTopIndex(); - int bottomIdx = topIdx + getNumberOfVisibleLines(); - int elementsCnt = getVirtualContentModel().getElements().length; - int numLinesLeft = elementsCnt - bottomIdx; - - for (int i = 0; i < listeners.length; i++) { - final IVirtualContentListener listener = (IVirtualContentListener) listeners[i]; - if (numLinesLeft <= listener.getThreshold(IVirtualContentListener.BUFFER_END)) - { - SafeRunner.run(new ISafeRunnable() { - public void run() throws Exception { - listener.handleAtBufferEnd(); - } - public void handleException(Throwable exception) { - DebugUIPlugin.log(exception); - } - }); - } - } - } - - protected void handleScrollBarSelection() - { -// ignore event if there is pending set top index in the queue - if (!fTopIndexQueue.isEmpty()) - return; - topIndexChanged(); - } - - public void topIndexChanged() - { - if (AsyncVirtualContentTableViewer.DEBUG_DYNAMIC_LOADING) - { - MemorySegment a = (MemorySegment)getTable().getItem(getTable().getTopIndex()).getData(); - System.out.println(Thread.currentThread().getName() + " " + this + " handle scroll bar moved: top index: " + a.getAddress().toString(16)); //$NON-NLS-1$ //$NON-NLS-2$ - } - - setTopIndexKey(getVirtualContentModel().getKey(getTable().getTopIndex())); - - notifyListenersAtBufferStart(); - notifyListenersAtBufferEnd(); - } - - protected void setTopIndexKey(Object key) - { - fTopIndexKey = key; - } - - protected Object getTopIndexKey() - { - return fTopIndexKey; - } - - protected synchronized void preservingSelection(Runnable updateCode) { - Object oldTopIndexKey = null; - if (fPendingTopIndexKey == null) { - // preserve selection - oldTopIndexKey = getTopIndexKey(); - } - else - { - oldTopIndexKey = fPendingTopIndexKey; - } - - try { - - // perform the update - updateCode.run(); - } finally { - if (oldTopIndexKey != null) - { - setTopIndex(oldTopIndexKey); - } - } - - } - - public void addPresentationErrorListener(IPresentationErrorListener errorListener) - { - fPresentationErrorListeners.add(errorListener); - } - - public void removePresentationErrorListener(IPresentationErrorListener errorListener) - { - fPresentationErrorListeners.remove(errorListener); - } - - private void notifyPresentationError(final IStatusMonitor monitor, final IStatus status) - { - Object[] listeners = fPresentationErrorListeners.getListeners(); - - for (int i = 0; i < listeners.length; i++) { - - if (listeners[i] instanceof IPresentationErrorListener) - { - final IPresentationErrorListener listener = (IPresentationErrorListener)listeners[i]; - SafeRunner.run(new ISafeRunnable() { - public void run() throws Exception { - listener.handlePresentationFailure(monitor, status); - } - public void handleException(Throwable exception) { - DebugUIPlugin.log(exception); - } - }); - } - } - } - - protected AsynchronousModel createModel() { - return createVirtualContentTableModel(); - } - - abstract protected AbstractVirtualContentTableModel createVirtualContentTableModel(); - - private void addKeyToQueue(Object topIndexKey) - { - synchronized(fTopIndexQueue){ - if (AsyncVirtualContentTableViewer.DEBUG_DYNAMIC_LOADING) - System.out.println(" >>> add to top index queue: " + ((BigInteger)topIndexKey).toString(16)); //$NON-NLS-1$ - fTopIndexQueue.add(topIndexKey); - } - } - - private void removeKeyFromQueue(Object topIndexKey) - { - synchronized(fTopIndexQueue){ - if (AsyncVirtualContentTableViewer.DEBUG_DYNAMIC_LOADING) - System.out.println(" >>> remove frome top index queue: " + ((BigInteger)topIndexKey).toString(16)); //$NON-NLS-1$ - fTopIndexQueue.remove(topIndexKey); - } - } - - public AbstractVirtualContentTableModel getVirtualContentModel() - { - if (getModel() instanceof AbstractVirtualContentTableModel) - return (AbstractVirtualContentTableModel) getModel(); - return null; - } - - private int getNumberOfVisibleLines() - { - Table table = getTable(); - int height = table.getSize().y; - - // when table is not yet created, height is zero - if (height == 0) - { - // make use of the table viewer to estimate table size - height = table.getParent().getSize().y; - } - - // height of border - int border = table.getHeaderHeight(); - - // height of scroll bar - int scroll = table.getHorizontalBar().getSize().y; - - // height of table is table's area minus border and scroll bar height - height = height-border-scroll; - - // calculate number of visible lines - int lineHeight = getMinTableItemHeight(table); - - int numberOfLines = height/lineHeight; - - if (numberOfLines <= 0) - return 20; - - return numberOfLines; - } - - private int getMinTableItemHeight(Table table){ - - // Hack to get around Linux GTK problem. - // On Linux GTK, table items have variable item height as - // carriage returns are actually shown in a cell. Some rows will be - // taller than others. When calculating number of visible lines, we - // need to find the smallest table item height. Otherwise, the rendering - // underestimates the number of visible lines. As a result the rendering - // will not be able to get more memory as needed. - if (MemoryViewUtil.isLinuxGTK()) - { - // check each of the items and find the minimum - TableItem[] items = table.getItems(); - int minHeight = table.getItemHeight(); - for (int i=0; i<items.length; i++) - { - if (items[i].getData() != null) - minHeight = Math.min(items[i].getBounds(0).height, minHeight); - } - - return minHeight; - - } - return table.getItemHeight(); - } - - protected void updateComplete(IStatusMonitor monitor) { - super.updateComplete(monitor); - attemptSetTopIndex(); - if (monitor instanceof ILabelRequestMonitor) - { - fPendingResizeColumns = attemptResizeColumnsToPreferredSize(); - } - } - - protected boolean hasPendingSetTopIndex() - { - return !fTopIndexQueue.isEmpty(); - } - -} |