package org.gudy.azureus2.ui.swt.progress;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.StyleRange;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.events.MouseAdapter;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.*;
import org.gudy.azureus2.core3.internat.MessageText;
import org.gudy.azureus2.core3.util.Constants;
import org.gudy.azureus2.ui.swt.*;
import org.gudy.azureus2.ui.swt.mainwindow.Colors;
import com.aelitis.azureus.ui.swt.imageloader.ImageLoader;
/**
*
* @author knguyen
*
*/
public class ProgressReporterPanel
extends Composite
implements IProgressReportConstants, IProgressReporterListener
{
private Color normalColor = null;
private Color errorColor = null;
public IProgressReporter pReporter = null;
private Label imageLabel = null;
private Label nameLabel = null;
private Label statusLabel = null;
private StyledText detailListWidget = null;
private GridData detailSectionData = null;
private AZProgressBar pBar = null;
private Composite progressPanel = null;
private TwistieSection detailSection = null;
private int style;
private Label actionLabel_cancel = null;
private Label actionLabel_remove = null;
private Label actionLabel_retry = null;
/**
* The height of the detail panel when the window first appears.
* This only takes effect when there is some detail messages to display and when that
* list of messages is too long; this value limits the height of the panel so that the window
* does not grow to take up too much of the screen in such instances.
*/
private int maxPreferredDetailPanelHeight = 200;
/**
* The preferred maximum height for the detail section on initialization
*/
private int maxPreferredDetailPanelHeight_Standalone = 600;
/**
* The preferred maximum width for the panel. When the longest line of the detail messages
* of the width of the title is too wide we use this limit to prevent the panel from taking
* up too much width; the user is still free to manually make the panel wider of narrower as desired
*/
private int maxPreferredWidth = 900;
/**
* we persist the last error to avoid it being overwritten by subsequent non-error messages
*/
private String lastStatusError = null;
/**
* Create a panel for the given reporter.
* <code>style</code> could be one or more of these:
* <ul>
* <li><code>IProgressReportConstants.NONE</code> -- the default</li>
* <li><code>IProgressReportConstants.AUTO_CLOSE</code> -- automatically disposes this panel when the given reporter is done</li>
* <li><code>IProgressReportConstants.STANDALONE</code> -- this panel will be hosted by itself in a window; the detail section of this panel will be given more height</li>
* <li><code>IProgressReportConstants.BORDER</code> -- this panel will be hosted by itself in a window; the detail section of this panel will be given more height</li>
* </ul>
* @param parent the <code>Composite</code> hosting the panel
* @param reporter the <code>IProgressReporter</code> to host
* @param style one of the style bits listed above
*/
public ProgressReporterPanel(Composite parent, IProgressReporter reporter,
int style) {
super(parent, ((style & BORDER) != 0 ? SWT.BORDER : SWT.NONE));
if (null == reporter) {
throw new NullPointerException("IProgressReporter can not be null");//KN: should use resource?
}
this.pReporter = reporter;
this.style = style;
normalColor = Colors.blue;
errorColor = Colors.colorError;
/*
* Give this Composite some margin and spacing
*/
setLayoutData(new GridData(SWT.FILL, SWT.TOP, true, false));
GridLayout gLayout = new GridLayout(2, false);
gLayout.marginWidth = 25;
gLayout.marginTop =15;
gLayout.marginBottom=10;
setLayout(gLayout);
/*
* Creates the rest of the controls
*/
createControls(pReporter.getProgressReport());
/*
* Resize content when this panel changes size
*/
addListener(SWT.Resize, new Listener() {
public void handleEvent(Event e) {
resizeContent();
}
});
/*
* Update the UI when ever the reporter send a report
*/
pReporter.addListener(this);
}
/**
* Call-back method from <code>IProgressReporterListener</code>; this method is called when ever the reporter
* dispatches an event
*/
public int report(IProgressReport pReport) {
return handleEvents(pReport);
}
/**
* Creates all the controls for the panel
* @param pReport
*/
private void createControls(IProgressReport pReport) {
imageLabel = new Label(this, SWT.NONE);
imageLabel.setLayoutData(new GridData(SWT.BEGINNING, SWT.TOP, false, false,1,3));
/*
* Creates the main panel
*/
progressPanel = new Composite(this, SWT.NONE);
progressPanel.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
GridLayout rightLayout = new GridLayout(4, false);
rightLayout.marginHeight = 0;
rightLayout.marginWidth = 0;
progressPanel.setLayout(rightLayout);
/*
* Creates all the controls
*/
nameLabel = new Label(progressPanel, SWT.WRAP);
nameLabel.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true,
false, 4, 1));
pBar = new AZProgressBar(progressPanel, pReport.isIndeterminate());
pBar.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
actionLabel_cancel = new Label(progressPanel, SWT.NONE);
actionLabel_cancel.setLayoutData(new GridData(SWT.END, SWT.CENTER, false,
false));
actionLabel_remove = new Label(progressPanel, SWT.NONE);
actionLabel_remove.setLayoutData(new GridData(SWT.END, SWT.CENTER, false,
false));
actionLabel_retry = new Label(progressPanel, SWT.NONE);
actionLabel_retry.setLayoutData(new GridData(SWT.END, SWT.CENTER, false,
false));
statusLabel = new Label(progressPanel, SWT.NONE);
statusLabel.setLayoutData(new GridData(SWT.BEGINNING, SWT.CENTER, true, false,
2, 1));
/*
* Creates the detail section
*/
createDetailSection(pReport);
/*
* Initialize controls from information in the given report
*/
initControls(pReport);
/*
* Listener to 'cancel' label
*/
actionLabel_cancel.addMouseListener(new MouseAdapter() {
public void mouseDown(MouseEvent e) {
pReporter.cancel();
}
});
/*
* Listener to 'retry' label
*/
actionLabel_retry.addMouseListener(new MouseAdapter() {
public void mouseDown(MouseEvent e) {
pReporter.retry();
}
});
/*
* Listener to 'remove' label
*/
actionLabel_remove.addMouseListener(new MouseAdapter() {
public void mouseDown(MouseEvent e) {
/*
* Removes the current reporter from the history stack of the reporting manager
*/
ProgressReportingManager.getInstance().remove(pReporter);
/*
* Then perform general clean-ups
*/
dispose();
}
});
}
/**
* Initialize the controls with information from the given <code>IProgressReport</code>
* @param pReport
*/
private void initControls(IProgressReport pReport) {
/*
* Image
*/
if (null != pReport.getImage()) {
imageLabel.setImage(pReport.getImage());
} else {
imageLabel.setImage(getDisplay().getSystemImage(SWT.ICON_INFORMATION));
}
/*
* Name label
*/
nameLabel.setText(formatForDisplay(pReport.getName()));
/*
* Action labels
*/
ImageLoader imageLoader = ImageLoader.getInstance();
imageLoader.setLabelImage(actionLabel_cancel, "progress_cancel");
imageLoader.setLabelImage(actionLabel_remove, "progress_remove");
imageLoader.setLabelImage(actionLabel_retry, "progress_retry");
actionLabel_cancel.setToolTipText(MessageText.getString("Progress.reporting.action.label.cancel.tooltip"));
actionLabel_remove.setToolTipText(MessageText.getString("Progress.reporting.action.label.remove.tooltip"));
actionLabel_retry.setToolTipText(MessageText.getString("Progress.reporting.action.label.retry.tooltip"));
/* ========================================
* Catch up on any messages we might have missed
*/
{
if (true == pReport.isInErrorState()) {
updateStatusLabel(
MessageText.getString("Progress.reporting.default.error"), true);
}else if (true == pReport.isDone()) {
updateStatusLabel(
MessageText.getString("Progress.reporting.status.finished"), false);
} else if (true == pReport.isCanceled()) {
updateStatusLabel(
MessageText.getString("Progress.reporting.status.canceled"), false);
} else if (true == pReport.isIndeterminate()) {
updateStatusLabel(Constants.INFINITY_STRING, false);
} else {
updateStatusLabel(pReport.getPercentage() + "%", false);
}
}
/*
* Synch the progress bar
*/
synchProgressBar(pReport);
/*
* Synch the action label according to existing properties of the ProgressReport
*/
synchActionLabels(pReport);
}
/**
* Below the panel, taking up the entire width of the window, is the detail section
*/
private void createDetailSection(IProgressReport pReport) {
Label separator = new Label(this, SWT.SEPARATOR | SWT.HORIZONTAL);
separator.setLayoutData(new GridData(SWT.FILL, SWT.TOP, true, false));
detailSection = new TwistieSection(this, TwistieLabel.NONE);
detailSection.setTitle(MessageText.getString("Progress.reporting.action.label.detail"));
Composite sectionContent = detailSection.getContent();
detailSectionData = new GridData(SWT.FILL, SWT.FILL, true, true);
detailSection.setLayoutData(detailSectionData);
GridLayout sectionLayout = new GridLayout();
sectionLayout.marginHeight = 0;
sectionLayout.marginWidth = 0;
sectionContent.setLayout(sectionLayout);
detailSection.setEnabled(false);
detailListWidget = new StyledText(sectionContent, SWT.BORDER | SWT.V_SCROLL
| SWT.WRAP);
detailListWidget.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
/*
* Add a default message instead of an empty box if there is no history;
* remove this later when a real detail message arrive
*/
IMessage[] messages = pReporter.getMessageHistory();
/*
* Show error messages in red; otherwise use default color
*/
for (int i = 0; i < messages.length; i++) {
if (messages[i].getType() == MSG_TYPE_ERROR) {
appendToDetail(formatForDisplay(messages[i].getValue()), true);
} else {
appendToDetail(formatForDisplay(messages[i].getValue()), false);
}
}
resizeDetailSection();
/*
* Force a layout when ever the section is collapsed or expanded
*/
detailSection.addTwistieListener(new ITwistieListener() {
public void isCollapsed(boolean value) {
resizeDetailSection();
layout(true, true);
}
});
}
/**
* Ensure that the detail does not take up too much vertical space
*/
private void resizeDetailSection() {
/*
* Since detail panel automatically grows to show the entire list of detail messages
* we want to at least place a limit on its height just in case the list is too long.
* A vertical scrollbar will appear so the user can scroll through the rest of the list
*/
Point computedSize = detailSection.computeSize(SWT.DEFAULT, SWT.DEFAULT);
detailSectionData.heightHint = computedSize.y;
if ((STANDALONE & style) != 0) {
if (computedSize.y > maxPreferredDetailPanelHeight_Standalone) {
detailSectionData.heightHint = maxPreferredDetailPanelHeight_Standalone;
}
} else if (computedSize.y > maxPreferredDetailPanelHeight) {
detailSectionData.heightHint = maxPreferredDetailPanelHeight;
}
if (computedSize.x > maxPreferredWidth) {
detailSectionData.widthHint = maxPreferredWidth;
}
}
public Point computeSize(int hint, int hint2, boolean changed) {
Point newSize = super.computeSize(hint, hint2, changed);
if (newSize.x > maxPreferredWidth) {
newSize.x = maxPreferredWidth;
}
return newSize;
}
/**
* Process the event from the given <code>ProgressReport</code>
*
* @param pReport
*/
private int handleEvents(final IProgressReport pReport) {
if (null == pReport || true == isDisposed() || null == getDisplay()) {
return RETVAL_OK;
}
/* Note each 'case' statement of the 'switch' block performs its UI update encapsulated in an .asyncExec()
* so that the UI does not freeze or flicker. It may be tempting to encapsulate the whole 'switch' block
* within one .asyncExec() but then a separate loop would be required to wait for the Runnable to finish
* before attaining the correct return code. The alternative would be to encapsulate the 'switch' block
* in a .syncExec() but that would cause freezing and flickering
*/
switch (pReport.getReportType()) {
case REPORT_TYPE_PROPERTY_CHANGED:
getDisplay().asyncExec(new Runnable() {
public void run() {
if (null != nameLabel && false == nameLabel.isDisposed()) {
nameLabel.setText(formatForDisplay(pReport.getName()));
}
if (true == pReport.isIndeterminate()) {
updateStatusLabel(Constants.INFINITY_STRING, false);
} else {
updateStatusLabel(pReport.getPercentage() + "%", false);
}
appendToDetail(pReport.getMessage(), false);
appendToDetail(pReport.getDetailMessage(), false);
synchProgressBar(pReport);
synchActionLabels(pReport);
resizeContent();
}
});
break;
case REPORT_TYPE_CANCEL:
getDisplay().asyncExec(new Runnable() {
public void run() {
synchProgressBar(pReport);
updateStatusLabel(
MessageText.getString("Progress.reporting.status.canceled"),
false);
appendToDetail(pReport.getMessage(), false);
synchActionLabels(pReport);
resizeContent();
}
});
break;
case REPORT_TYPE_DONE:
getDisplay().asyncExec(new Runnable() {
public void run() {
if (((style & AUTO_CLOSE) != 0)) {
dispose();
} else {
synchProgressBar(pReport);
updateStatusLabel(
MessageText.getString("Progress.reporting.status.finished"),
false);
appendToDetail(
MessageText.getString("Progress.reporting.status.finished"),
false);
synchActionLabels(pReport);
resizeContent();
}
}
});
/*
* Since the reporter is done we don't need this listener anymore
*/
return RETVAL_OK_TO_DISPOSE;
case REPORT_TYPE_MODE_CHANGE:
getDisplay().asyncExec(new Runnable() {
public void run() {
if (null != pBar && false == pBar.isDisposed()) {
pBar.setIndeterminate(pReport.isIndeterminate());
}
}
});
break;
case REPORT_TYPE_ERROR:
getDisplay().asyncExec(new Runnable() {
public void run() {
updateStatusLabel(
MessageText.getString("Progress.reporting.default.error"), true);
appendToDetail(pReport.getErrorMessage(), true);
synchActionLabels(pReport);
synchProgressBar(pReport);
resizeContent();
}
});
break;
case REPORT_TYPE_RETRY:
getDisplay().asyncExec(new Runnable() {
public void run() {
lastStatusError = null;
updateStatusLabel(pReport.getMessage(), false);
appendToDetail(
MessageText.getString("Progress.reporting.status.retrying"),
false);
synchActionLabels(pReport);
synchProgressBar(pReport);
resizeContent();
}
});
break;
default:
break;
}
return RETVAL_OK;
}
/**
* Synchronize the progress bar with the given <code>IProgressReport</code>
* @param pReport
*/
private void synchProgressBar(IProgressReport pReport) {
if (null == pBar || pBar.isDisposed() || null == pReport) {
return;
}
if (true == pReport.isInErrorState()) {
pBar.setIndeterminate(false);
pBar.setSelection(pReport.getMinimum());
} else {
pBar.setIndeterminate(pReport.isIndeterminate());
if (false == pReport.isIndeterminate()) {
pBar.setMinimum(pReport.getMinimum());
pBar.setMaximum(pReport.getMaximum());
}
pBar.setSelection(pReport.getSelection());
}
}
/**
* Sets the defined color to the given <code>label</code>
* @param label
* @param text
* @param showAsError <code>true</code> to show as error; <code>false</code> otherwise
*/
private void updateStatusLabel(String text, boolean showAsError) {
if (null == statusLabel || statusLabel.isDisposed()) {
return;
}
// we persist any error reports as these need to be sticky and not
// overritten by subsequent messages
if ( showAsError ){
lastStatusError = text;
}
if ( lastStatusError != null ){
showAsError = true;
text = lastStatusError;
}
statusLabel.setText(formatForDisplay(text));
if (false == showAsError) {
statusLabel.setForeground(normalColor);
} else {
statusLabel.setForeground(errorColor);
}
statusLabel.update();
}
/**
* Display the appropriate text for the action labels
* based on what action can be taken
*/
private void synchActionLabels(IProgressReport pReport) {
if (null == actionLabel_remove || null == actionLabel_cancel
|| null == actionLabel_retry || true == actionLabel_remove.isDisposed()
|| true == actionLabel_cancel.isDisposed()
|| true == actionLabel_retry.isDisposed()) {
return;
}
/*
* There are 3 labels that can be clicked on; base on the state of the reporter itself.
* The basic rules are these:
*
* If it's done
* then show just "remove"
*
* else if it's in error
* and retry is allowed
* then show "retry" and "remove"
* else just show "remove"
*
* else if it's been canceled
* and retry is allowed
* then show "retry" and "remove"
* else just show "remove"
*
* else if it's none of the above
* then show just the "cancel" label
* enable the label if cancel is allowed
* else disable the label
*
*/
showActionLabel(actionLabel_cancel, false);
showActionLabel(actionLabel_remove, false);
showActionLabel(actionLabel_retry, false);
if (true == pReport.isDone()) {
showActionLabel(actionLabel_remove, true);
} else if (true == pReport.isInErrorState()) {
if (true == pReport.isRetryAllowed()) {
showActionLabel(actionLabel_retry, true);
showActionLabel(actionLabel_remove, true);
} else {
showActionLabel(actionLabel_remove, true);
}
} else if (true == pReport.isCanceled()) {
if (true == pReport.isRetryAllowed()) {
showActionLabel(actionLabel_retry, true);
showActionLabel(actionLabel_remove, true);
} else {
showActionLabel(actionLabel_remove, true);
}
} else {
showActionLabel(actionLabel_cancel, true);
actionLabel_cancel.setEnabled(pReport.isCancelAllowed());
}
}
/**
* Convenience method for showing or hiding a label by setting its <code>GridData.widthHint</code>
* @param label
* @param showIt
*/
private void showActionLabel(Label label, boolean showIt) {
((GridData) label.getLayoutData()).widthHint = (true == showIt) ? 16 : 0;
}
/**
* Resizes the content of this panel to fit within the shell and to layout children control appropriately
*/
public void resizeContent() {
if (false == isDisposed()) {
layout(true, true);
}
}
/**
* Formats the string so it displays properly in an SWT text control
* @param string
* @return
*/
private String formatForDisplay(String string) {
/*
* SWT text controls do not allow a null argument as a value and will throw an exception if a <code>null</code> is encountered</p>
*/
string = null == string ? "" : string;
/*
* Escaping the '&' character so it won't be shown as an underscore
*/
return string.replaceAll("&", "&&");
}
public void addTwistieListener(ITwistieListener listener) {
detailSection.addTwistieListener(listener);
}
public void removeTwistieListener(ITwistieListener listener) {
detailSection.removeTwistieListener(listener);
}
/**
* Appends the given message to the detail panel; render the message in error color if specified
* @param value
* @param isError if <code>true</code> then render the message in the system error color; otherwise render in default color
*/
private void appendToDetail(String value, boolean isError) {
if (null == value || value.length() < 1) {
return;
}
if (null == detailListWidget || detailListWidget.isDisposed()) {
return;
}
int charCount = detailListWidget.getCharCount();
detailListWidget.append(value + "\n");
if (true == isError) {
StyleRange style2 = new StyleRange();
style2.start = charCount;
style2.length = value.length();
style2.foreground = errorColor;
detailListWidget.setStyleRange(style2);
}
detailSection.setEnabled(true);
}
/**
* Returns the attached reporter
* @return
*/
public IProgressReporter getProgressReporter(){
return pReporter;
}
public int getStyle(){
return style;
}
}