X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.message.ui%2Fsrc%2Forg%2Fsimantics%2Fmessage%2Fui%2FOpenLogDialog.java;fp=bundles%2Forg.simantics.message.ui%2Fsrc%2Forg%2Fsimantics%2Fmessage%2Fui%2FOpenLogDialog.java;h=5c5f8897e51f8fbe759f77cfe70da2caa615c927;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.message.ui/src/org/simantics/message/ui/OpenLogDialog.java b/bundles/org.simantics.message.ui/src/org/simantics/message/ui/OpenLogDialog.java
new file mode 100644
index 000000000..5c5f8897e
--- /dev/null
+++ b/bundles/org.simantics.message.ui/src/org/simantics/message/ui/OpenLogDialog.java
@@ -0,0 +1,240 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * 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:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.message.ui;
+
+import java.io.*;
+import java.lang.reflect.InvocationTargetException;
+import org.eclipse.core.runtime.IProgressMonitor;
+import org.eclipse.jface.dialogs.*;
+import org.eclipse.jface.operation.IRunnableWithProgress;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.layout.GridData;
+import org.eclipse.swt.widgets.*;
+
+/**
+ * Displays the error log in non-Win32 platforms - see bug 55314.
+ */
+public final class OpenLogDialog extends TrayDialog {
+	// input log file
+	private File logFile;
+	// location/size configuration
+	private IDialogSettings dialogSettings;
+	private Point dialogLocation;
+	private Point dialogSize;
+	private int DEFAULT_WIDTH = 750;
+	private int DEFAULT_HEIGHT = 800;
+
+	public OpenLogDialog(Shell parentShell, File logFile) {
+		super(parentShell);
+		this.logFile = logFile;
+		setShellStyle(SWT.DIALOG_TRIM | SWT.RESIZE | SWT.MAX | SWT.MIN | SWT.MODELESS);
+
+	}
+
+	/*
+	 * (non-Javadoc) Method declared on Window.
+	 */
+	protected void configureShell(Shell newShell) {
+		super.configureShell(newShell);
+		newShell.setText(Messages.OpenLogDialog_title);
+		readConfiguration();
+	}
+
+	/*
+	 * (non-Javadoc) Method declared on Dialog.
+	 */
+	protected void createButtonsForButtonBar(Composite parent) {
+		createButton(parent, IDialogConstants.CLOSE_ID, IDialogConstants.CLOSE_LABEL, true);
+	}
+
+	public void create() {
+		super.create();
+		// dialog location
+		if (dialogLocation != null)
+			getShell().setLocation(dialogLocation);
+		// dialog size
+		if (dialogSize != null)
+			getShell().setSize(dialogSize);
+		else
+			getShell().setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);
+		getButton(IDialogConstants.CLOSE_ID).setFocus();
+	}
+
+	/*
+	 * (non-Javadoc) Method declared on Dialog.
+	 */
+	protected Control createDialogArea(Composite parent) {
+		Composite outer = (Composite) super.createDialogArea(parent);
+		Text text = new Text(outer, SWT.MULTI | SWT.BORDER | SWT.READ_ONLY | SWT.V_SCROLL | SWT.NO_FOCUS | SWT.H_SCROLL);
+		text.setBackground(parent.getDisplay().getSystemColor(SWT.COLOR_LIST_BACKGROUND));
+		GridData gridData = new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_FILL);
+		gridData.grabExcessVerticalSpace = true;
+		gridData.grabExcessHorizontalSpace = true;
+		text.setLayoutData(gridData);
+		text.setText(getLogSummary());
+		return outer;
+	}
+
+	private String getLogSummary() {
+		StringWriter out = new StringWriter();
+		PrintWriter writer = new PrintWriter(out);
+		if (logFile.length() > LogReader.MAX_FILE_LENGTH) {
+			readLargeFileWithMonitor(writer);
+		} else {
+			readFileWithMonitor(writer);
+		}
+		writer.close();
+		return out.toString();
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see org.eclipse.jface.dialogs.Dialog#buttonPressed(int)
+	 */
+	protected void buttonPressed(int buttonId) {
+		if (buttonId == IDialogConstants.CLOSE_ID) {
+			storeSettings();
+			close();
+		}
+		super.buttonPressed(buttonId);
+	}
+
+	//--------------- configuration handling --------------
+	/**
+	 * Stores the current state in the dialog settings.
+	 * 
+	 * @since 2.0
+	 */
+	private void storeSettings() {
+		writeConfiguration();
+	}
+
+	/**
+	 * Returns the dialog settings object used to share state between several
+	 * event detail dialogs.
+	 * 
+	 * @return the dialog settings to be used
+	 */
+	private IDialogSettings getDialogSettings() {
+		IDialogSettings settings = Activator.getDefault().getDialogSettings();
+		dialogSettings = settings.getSection(getClass().getName());
+		if (dialogSettings == null)
+			dialogSettings = settings.addNewSection(getClass().getName());
+		return dialogSettings;
+	}
+
+	/**
+	 * Initializes itself from the dialog settings with the same state as at the
+	 * previous invocation.
+	 */
+	private void readConfiguration() {
+		IDialogSettings s = getDialogSettings();
+		try {
+			int x = s.getInt("x"); //$NON-NLS-1$
+			int y = s.getInt("y"); //$NON-NLS-1$
+			dialogLocation = new Point(x, y);
+			x = s.getInt("width"); //$NON-NLS-1$
+			y = s.getInt("height"); //$NON-NLS-1$
+			dialogSize = new Point(x, y);
+		} catch (NumberFormatException e) {
+			dialogLocation = null;
+			dialogSize = null;
+		}
+	}
+
+	private void writeConfiguration() {
+		IDialogSettings s = getDialogSettings();
+		Point location = getShell().getLocation();
+		s.put("x", location.x); //$NON-NLS-1$
+		s.put("y", location.y); //$NON-NLS-1$
+		Point size = getShell().getSize();
+		s.put("width", size.x); //$NON-NLS-1$
+		s.put("height", size.y); //$NON-NLS-1$
+	}
+
+	// reading file within MAX_FILE_LENGTH size
+	void readFile(PrintWriter writer) throws FileNotFoundException, IOException {
+		try (BufferedReader bReader = new BufferedReader(new FileReader(logFile))) {
+			while (bReader.ready())
+				writer.println(bReader.readLine());
+		}
+	}
+
+	// reading large files
+	void readLargeFile(PrintWriter writer) throws FileNotFoundException, IOException {
+		RandomAccessFile random = null;
+		boolean hasStarted = false;
+		try {
+			random = new RandomAccessFile(logFile, "r"); //$NON-NLS-1$
+			random.seek(logFile.length() - LogReader.MAX_FILE_LENGTH);
+			for (;;) {
+				String line = random.readLine();
+				if (line == null)
+					break;
+				line = line.trim();
+				if (line.length() == 0)
+					continue;
+				if (!hasStarted && (line.startsWith("!ENTRY") || line.startsWith("!SESSION"))) //$NON-NLS-1$ //$NON-NLS-2$
+					hasStarted = true;
+				if (hasStarted)
+					writer.println(line);
+				continue;
+			}
+		} finally {
+			try {
+				if (random != null)
+					random.close();
+			} catch (IOException e1) { // do nothing
+			}
+		}
+	}
+
+	private void readLargeFileWithMonitor(final PrintWriter writer) {
+		IRunnableWithProgress runnable = new IRunnableWithProgress() {
+			public void run(IProgressMonitor monitor) {
+				monitor.beginTask(Messages.OpenLogDialog_message, IProgressMonitor.UNKNOWN);
+				try {
+					readLargeFile(writer);
+				} catch (IOException e) {
+					writer.println(Messages.OpenLogDialog_cannotDisplay);
+				}
+			}
+		};
+		ProgressMonitorDialog dialog = new ProgressMonitorDialog(getParentShell());
+		try {
+			dialog.run(true, true, runnable);
+		} catch (InvocationTargetException e) { // do nothing
+		} catch (InterruptedException e) { // do nothing
+		}
+	}
+
+	private void readFileWithMonitor(final PrintWriter writer) {
+		IRunnableWithProgress runnable = new IRunnableWithProgress() {
+			public void run(IProgressMonitor monitor) {
+				monitor.beginTask(Messages.OpenLogDialog_message, IProgressMonitor.UNKNOWN);
+				try {
+					readFile(writer);
+				} catch (IOException e) {
+					writer.println(Messages.OpenLogDialog_cannotDisplay);
+				}
+			}
+		};
+		ProgressMonitorDialog dialog = new ProgressMonitorDialog(getParentShell());
+		try {
+			dialog.run(true, true, runnable);
+		} catch (InvocationTargetException e) { // do nothing
+		} catch (InterruptedException e) { // do nothing
+		}
+	}
+}