/*******************************************************************************
* Copyright (c) 2009 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
* Zend Technologies
*******************************************************************************/
package org.eclipse.php.internal.ui.editor.hover;
import java.util.*;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.text.*;
import org.eclipse.jface.text.source.ISourceViewer;
import org.eclipse.jface.text.source.SourceViewer;
import org.eclipse.jface.text.source.projection.ProjectionViewer;
import org.eclipse.php.internal.core.documentModel.partitioner.PHPStructuredTextPartitioner;
import org.eclipse.php.internal.core.documentModel.provisional.contenttype.ContentTypeIdForPHP;
import org.eclipse.php.internal.ui.editor.highlighter.LineStyleProviderForPhp;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.StyleRange;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.events.*;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.wst.sse.core.StructuredModelManager;
import org.eclipse.wst.sse.core.internal.document.DocumentReader;
import org.eclipse.wst.sse.core.internal.ltk.parser.RegionParser;
import org.eclipse.wst.sse.core.internal.provisional.IModelManager;
import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocumentRegion;
import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegion;
import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegionList;
/**
* Source viewer based implementation of <code>IInformationControl</code>.
* Displays information in a source viewer.
*
* @since 3.0
*/
public class PHPSourceViewerInformationControl implements IInformationControl,
IInformationControlExtension, DisposeListener {
/** Border thickness in pixels. */
private static final int BORDER = 1;
/** The control's shell */
private Shell fShell;
/** The control's text widget */
private StyledText fText;
/** The control's source viewer */
private SourceViewer fViewer;
/**
* The optional status field.
*
* @since 3.0
*/
private Label fStatusField;
/**
* The separator for the optional status field.
*
* @since 3.0
*/
private Label fSeparator;
/**
* The font of the optional status text label.
*
* @since 3.0
*/
private Font fStatusTextFont;
/**
* The width size constraint.
*
* @since 3.2
*/
private int fMaxWidth = SWT.DEFAULT;
/**
* The height size constraint.
*
* @since 3.2
*/
private int fMaxHeight = SWT.DEFAULT;
private Dictionary fContextStyleMap = null;
private IStructuredDocumentRegion fNodes = null;
private RegionParser fParser = null;
private LineStyleProviderForPhp styleProvider;
private String fInput = ""; //$NON-NLS-1$
/**
* @param newParser
*/
public void setParser(RegionParser newParser) {
fParser = newParser;
}
/**
* @param newContextStyleMap
* java.util.Dictionary
*/
public void setContextStyleMap(Dictionary newContextStyleMap) {
fContextStyleMap = newContextStyleMap;
}
/**
* @return java.util.Dictionary
*/
public Dictionary getContextStyleMap() {
return fContextStyleMap;
}
public RegionParser getParser() {
return fParser;
}
public TextAttribute getAttribute(String namedStyle) {
TextAttribute ta = new TextAttribute(fText.getBackground(), fText
.getForeground(), SWT.NORMAL);
if (namedStyle != null && styleProvider != null) {
ta = styleProvider.getTextAttributeForColor(namedStyle);
}
return ta;
}
public void applyStyles() {
if (fText == null || fText.isDisposed() || fInput == null
|| fInput.length() == 0) {
return;
}
IStructuredDocumentRegion node = fNodes;
final LineStyleProviderForPhp styler = new LineStyleProviderForPhp();
final Collection holdResults = new ArrayList();
styler.prepareTextRegions(node, 0, fNodes.getEnd(), holdResults);
for (Iterator iter = holdResults.iterator(); iter.hasNext();) {
StyleRange element = (StyleRange) iter.next();
fText.setStyleRange(element);
}
}
public void initColorsMap() {
IModelManager mmanager = StructuredModelManager.getModelManager();
setParser(mmanager.createStructuredDocumentFor(
ContentTypeIdForPHP.ContentTypeID_PHP).getParser());
styleProvider = new LineStyleProviderForPhp();
Dictionary contextStyleMap = new Hashtable(styleProvider
.getColorTypesMap());
setContextStyleMap(contextStyleMap);
}
/**
* Creates a default information control with the given shell as parent. The
* given information presenter is used to process the information to be
* displayed. The given styles are applied to the created styled text
* widget.
*
* @param parent
* the parent shell
* @param shellStyle
* the additional styles for the shell
* @param style
* the additional styles for the styled text widget
*/
public PHPSourceViewerInformationControl(Shell parent, int shellStyle,
int style) {
this(parent, shellStyle, style, null);
}
/**
* Creates a default information control with the given shell as parent. The
* given information presenter is used to process the information to be
* displayed. The given styles are applied to the created styled text
* widget.
*
* @param parent
* the parent shell
* @param shellStyle
* the additional styles for the shell
* @param style
* the additional styles for the styled text widget
* @param statusFieldText
* the text to be used in the optional status field or
* <code>null</code> if the status field should be hidden
* @since 3.0
*/
public PHPSourceViewerInformationControl(Shell parent, int shellStyle,
int style, String statusFieldText) {
GridLayout layout;
GridData gd;
fShell = new Shell(parent, SWT.NO_FOCUS | SWT.ON_TOP | shellStyle);
Display display = fShell.getDisplay();
fShell.setBackground(display.getSystemColor(SWT.COLOR_BLACK));
Composite composite = fShell;
layout = new GridLayout(1, false);
int border = ((shellStyle & SWT.NO_TRIM) == 0) ? 0 : BORDER;
layout.marginHeight = border;
layout.marginWidth = border;
composite.setLayout(layout);
gd = new GridData(GridData.FILL_HORIZONTAL);
composite.setLayoutData(gd);
if (statusFieldText != null) {
composite = new Composite(composite, SWT.NONE);
layout = new GridLayout(1, false);
layout.marginHeight = 0;
layout.marginWidth = 0;
composite.setLayout(layout);
gd = new GridData(GridData.FILL_BOTH);
composite.setLayoutData(gd);
composite.setForeground(display
.getSystemColor(SWT.COLOR_INFO_FOREGROUND));
composite.setBackground(display
.getSystemColor(SWT.COLOR_INFO_BACKGROUND));
}
// Source viewer
fViewer = new ProjectionViewer(composite, null, null, false, style);
fViewer.setEditable(false);
fText = fViewer.getTextWidget();
gd = new GridData(GridData.BEGINNING | GridData.FILL_BOTH);
fText.setLayoutData(gd);
fText.setForeground(parent.getDisplay().getSystemColor(
SWT.COLOR_INFO_FOREGROUND));
fText.setBackground(parent.getDisplay().getSystemColor(
SWT.COLOR_INFO_BACKGROUND));
initializeFont();
fText.addKeyListener(new KeyListener() {
public void keyPressed(KeyEvent e) {
if (e.character == 0x1B) // ESC
fShell.dispose();
}
public void keyReleased(KeyEvent e) {
}
});
// Status field
if (statusFieldText != null) {
// Horizontal separator line
fSeparator = new Label(composite, SWT.SEPARATOR | SWT.HORIZONTAL
| SWT.LINE_DOT);
fSeparator.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
// Status field label
fStatusField = new Label(composite, SWT.RIGHT);
fStatusField.setText(statusFieldText);
Font font = fStatusField.getFont();
FontData[] fontDatas = font.getFontData();
for (int i = 0; i < fontDatas.length; i++)
fontDatas[i].setHeight(fontDatas[i].getHeight() * 9 / 10);
fStatusTextFont = new Font(fStatusField.getDisplay(), fontDatas);
fStatusField.setFont(fStatusTextFont);
GridData gd2 = new GridData(GridData.FILL_VERTICAL
| GridData.FILL_HORIZONTAL
| GridData.HORIZONTAL_ALIGN_BEGINNING
| GridData.VERTICAL_ALIGN_BEGINNING);
fStatusField.setLayoutData(gd2);
// Regarding the color see bug 41128
fStatusField.setForeground(display
.getSystemColor(SWT.COLOR_WIDGET_DARK_SHADOW));
fStatusField.setBackground(display
.getSystemColor(SWT.COLOR_INFO_BACKGROUND));
}
initColorsMap();
addDisposeListener(this);
}
/**
* Creates a default information control with the given shell as parent. The
* given information presenter is used to process the information to be
* displayed. The given styles are applied to the created styled text
* widget.
*
* @param parent
* the parent shell
* @param style
* the additional styles for the styled text widget
*/
public PHPSourceViewerInformationControl(Shell parent, int style) {
this(parent, SWT.NO_TRIM | SWT.TOOL, style);
}
/**
* Creates a default information control with the given shell as parent. The
* given information presenter is used to process the information to be
* displayed. The given styles are applied to the created styled text
* widget.
*
* @param parent
* the parent shell
* @param style
* the additional styles for the styled text widget
* @param statusFieldText
* the text to be used in the optional status field or
* <code>null</code> if the status field should be hidden
* @since 3.0
*/
public PHPSourceViewerInformationControl(Shell parent, int style,
String statusFieldText) {
this(parent, SWT.NO_TRIM | SWT.TOOL, style, statusFieldText);
}
/**
* Creates a default information control with the given shell as parent. No
* information presenter is used to process the information to be displayed.
* No additional styles are applied to the styled text widget.
*
* @param parent
* the parent shell
*/
public PHPSourceViewerInformationControl(Shell parent) {
this(parent, SWT.NONE);
}
/**
* Creates a default information control with the given shell as parent. No
* information presenter is used to process the information to be displayed.
* No additional styles are applied to the styled text widget.
*
* @param parent
* the parent shell
* @param statusFieldText
* the text to be used in the optional status field or
* <code>null</code> if the status field should be hidden
* @since 3.0
*/
public PHPSourceViewerInformationControl(Shell parent,
String statusFieldText) {
this(parent, SWT.NONE, statusFieldText);
}
/**
* Initialize the font to the Java editor font.
*
* @since 3.2
*/
private void initializeFont() {
Font font = JFaceResources
.getFont("org.eclipse.jdt.ui.editors.textfont"); //$NON-NLS-1$
StyledText styledText = getViewer().getTextWidget();
styledText.setFont(font);
}
/*
* @see
* org.eclipse.jface.text.IInformationControlExtension2#setInput(java.lang
* .Object)
*/
public void setInput(Object input) {
if (input instanceof String) {
setInformation((String) input);
} else {
setInformation(null);
}
}
/*
* @see IInformationControl#setInformation(String)
*/
public void setInformation(String content) {
if (content == null) {
fViewer.setInput(null);
return;
}
// Add open and close PHP tags in order to enable PHP parser on content:
StringBuffer buf = new StringBuffer();
buf.append("<?"); //$NON-NLS-1$
buf.append(content);
buf.append("?>"); //$NON-NLS-1$
IDocument doc = new Document(buf.toString());
DocumentReader docReader = new DocumentReader(doc);
getParser().reset(docReader);
IStructuredDocumentRegion sdRegion = getParser().getDocumentRegions();
// This hack is needed in order to remove the open and close PHP tags we
// added before.
ITextRegionList phpRegionsList = sdRegion.getRegions();
phpRegionsList.remove(0); // remove open PHP tag
phpRegionsList.remove(phpRegionsList.size() - 1); // remove close PHP
// tag
// Update starting location of PHP token regions:
Iterator i = phpRegionsList.iterator();
while (i.hasNext()) {
ITextRegion tokenRegion = (ITextRegion) i.next();
tokenRegion.adjustStart(-2);
}
sdRegion.setRegions(phpRegionsList);
fInput = content;
fNodes = sdRegion;
doc = new Document(fInput);
doc.setDocumentPartitioner(new PHPStructuredTextPartitioner());
fViewer.setInput(doc);
applyStyles();
}
/*
* @see IInformationControl#setVisible(boolean)
*/
public void setVisible(boolean visible) {
fShell.setVisible(visible);
}
/**
* {@inheritDoc}
*
* @since 3.0
*/
public void widgetDisposed(DisposeEvent event) {
if (fStatusTextFont != null && !fStatusTextFont.isDisposed())
fStatusTextFont.dispose();
fStatusTextFont = null;
fShell = null;
fText = null;
}
/**
* {@inheritDoc}
*/
public final void dispose() {
if (fShell != null && !fShell.isDisposed())
fShell.dispose();
else
widgetDisposed(null);
}
/*
* @see IInformationControl#setSize(int, int)
*/
public void setSize(int width, int height) {
if (fStatusField != null) {
GridData gd = (GridData) fViewer.getTextWidget().getLayoutData();
Point statusSize = fStatusField.computeSize(SWT.DEFAULT,
SWT.DEFAULT, true);
Point separatorSize = fSeparator.computeSize(SWT.DEFAULT,
SWT.DEFAULT, true);
gd.heightHint = height - statusSize.y - separatorSize.y;
}
fShell.setSize(width, height);
if (fStatusField != null)
fShell.pack(true);
}
/*
* @see IInformationControl#setLocation(Point)
*/
public void setLocation(Point location) {
fShell.setLocation(location);
}
/*
* @see IInformationControl#setSizeConstraints(int, int)
*/
public void setSizeConstraints(int maxWidth, int maxHeight) {
fMaxWidth = maxWidth;
fMaxHeight = maxHeight;
}
/*
* @see IInformationControl#computeSizeHint()
*/
public Point computeSizeHint() {
// compute the preferred size
int x = SWT.DEFAULT;
int y = SWT.DEFAULT;
Point size = fShell.computeSize(x, y);
if (size.x > fMaxWidth)
x = fMaxWidth;
if (size.y > fMaxHeight)
y = fMaxHeight;
// recompute using the constraints if the preferred size is larger than
// the constraints
if (x != SWT.DEFAULT || y != SWT.DEFAULT)
size = fShell.computeSize(x, y, false);
return size;
}
/*
* @see IInformationControl#addDisposeListener(DisposeListener)
*/
public void addDisposeListener(DisposeListener listener) {
fShell.addDisposeListener(listener);
}
/*
* @see IInformationControl#removeDisposeListener(DisposeListener)
*/
public void removeDisposeListener(DisposeListener listener) {
fShell.removeDisposeListener(listener);
}
/*
* @see IInformationControl#setForegroundColor(Color)
*/
public void setForegroundColor(Color foreground) {
fText.setForeground(foreground);
}
/*
* @see IInformationControl#setBackgroundColor(Color)
*/
public void setBackgroundColor(Color background) {
fText.setBackground(background);
}
/*
* @see IInformationControl#isFocusControl()
*/
public boolean isFocusControl() {
return fText.isFocusControl();
}
/*
* @see IInformationControl#setFocus()
*/
public void setFocus() {
fShell.forceFocus();
fText.setFocus();
}
/*
* @see IInformationControl#addFocusListener(FocusListener)
*/
public void addFocusListener(FocusListener listener) {
fText.addFocusListener(listener);
}
/*
* @see IInformationControl#removeFocusListener(FocusListener)
*/
public void removeFocusListener(FocusListener listener) {
fText.removeFocusListener(listener);
}
/*
* @see IInformationControlExtension#hasContents()
*/
public boolean hasContents() {
return fText.getCharCount() > 0;
}
protected ISourceViewer getViewer() {
return fViewer;
}
}