Bug 28400 JavaEditorPreferencePage and JavaColorManager leak Colors
20021216 everytime you do this: 1. open java editor pref page 2. close the pref page you end up having allocated and not disposed 8 colors 1 is allocated like this at org.eclipse.jdt.internal.ui.preferences.JavaEditorPreferencePage.createColor(JavaEditorPreferencePage.java:560) at org.eclipse.jdt.internal.ui.preferences.JavaEditorPreferencePage.initializeViewerColors(JavaEditorPreferencePage.java:534) at org.eclipse.jdt.internal.ui.preferences.JavaEditorPreferencePage.createPreviewer(JavaEditorPreferencePage.java:493) at org.eclipse.jdt.internal.ui.preferences.JavaEditorPreferencePage.createSyntaxPage(JavaEditorPreferencePage.java:433) at org.eclipse.jdt.internal.ui.preferences.JavaEditorPreferencePage.createContents(JavaEditorPreferencePage.java:942) at org.eclipse.jface.preference.PreferencePage.createControl(PreferencePage.java:209) and the other 7 are allocated like this: at org.eclipse.jdt.internal.ui.text.JavaColorManager.getColor(JavaColorManager.java:62) at org.eclipse.jdt.internal.ui.text.JavaColorManager.getColor(JavaColorManager.java:85) at org.eclipse.jdt.internal.ui.text.AbstractJavaScanner.addToken(AbstractJavaScanner.java:90) at org.eclipse.jdt.internal.ui.text.AbstractJavaScanner.initialize(AbstractJavaScanner.java:75) at org.eclipse.jdt.internal.ui.text.java.JavaCodeScanner.<init>(JavaCodeScanner.java:126) at org.eclipse.jdt.ui.text.JavaTextTools.<init>(JavaTextTools.java:80) at org.eclipse.jdt.internal.ui.preferences.JavaEditorPreferencePage.createPreviewer(JavaEditorPreferencePage.java:486) at org.eclipse.jdt.internal.ui.preferences.JavaEditorPreferencePage.createSyntaxPage(JavaEditorPreferencePage.java:433) at org.eclipse.jdt.internal.ui.preferences.JavaEditorPreferencePage.createContents(JavaEditorPreferencePage.java:942) at org.eclipse.jface.preference.PreferencePage.createControl(PreferencePage.java:209)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/JavaEditorPreferencePage.java
addCheckBox(appearanceComposite, label, PreferenceConstants.EDITOR_LINE_NUMBER_RULER, 0);
		label= PreferencesMessages.getString("JavaEditorPreferencePage.highlightMatchingBrackets"); 
		addCheckBox(appearanceComposite, label, PreferenceConstants.EDITOR_MATCHING_BRACKETS, 0);
		
		label= PreferencesMessages.getString("JavaEditorPreferencePage.highlightCurrentLine"); 
		addCheckBox(appearanceComposite, label, PreferenceConstants.EDITOR_CURRENT_LINE, 0);
				
		label= PreferencesMessages.getString("JavaEditorPreferencePage.showPrintMargin"); 
		addCheckBox(appearanceComposite, label, PreferenceConstants.EDITOR_PRINT_MARGIN, 0);
		Label l= new Label(appearanceComposite, SWT.LEFT );
		GridData gd= new GridData(GridData.HORIZONTAL_ALIGN_FILL);
		gd.horizontalSpan= 2;
		gd.heightHint= convertHeightInCharsToPixels(1) / 2;
		l.setLayoutData(gd);
		
		l= new Label(appearanceComposite, SWT.LEFT);
		l.setText(PreferencesMessages.getString("JavaEditorPreferencePage.appearanceOptions")); 
		gd= new GridData(GridData.HORIZONTAL_ALIGN_FILL);
		gd.horizontalSpan= 2;
		l.setLayoutData(gd);
		Composite editorComposite= new Composite(appearanceComposite, SWT.NONE);
		layout= new GridLayout();
		layout.numColumns= 2;
		layout.marginHeight= 0;
		layout.marginWidth= 0;
		editorComposite.setLayout(layout);
		gd= new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.FILL_VERTICAL);
		gd.horizontalSpan= 2;
		editorComposite.setLayoutData(gd);		
		fAppearanceColorList= new List(editorComposite, SWT.SINGLE | SWT.V_SCROLL | SWT.BORDER);