Examples of org.eclipse.jface.resource.ColorRegistry

org.eclipse.jface.resource.ColorRegistry
A color registry maintains a mapping between symbolic color names and SWT Colors.
A color registry owns all of the Color objects registered with it, and automatically disposes of them when the SWT Display that creates the Colors is disposed. Because of this, clients do not need to (indeed, must not attempt to) dispose of Color objects themselves.

Methods are provided for registering listeners that will be kept apprised of changes to list of registed colors.

Clients may instantiate this class (it was not designed to be subclassed).
@since 3.0 @noextend This class is not intended to be subclassed by clients.

            fBackgroundColorName = backgroundColorName;
        }


        @Override
        public void applyStyles(TextStyle textStyle) {
            ColorRegistry colorRegistry = JFaceResources.getColorRegistry();
            Font font = JFaceResources.getFontRegistry().getItalic(fontName);
            if (fForegroundColorName != null) {
                textStyle.foreground = colorRegistry.get(fForegroundColorName);
            }
            if (fBackgroundColorName != null) {
                textStyle.background = colorRegistry.get(fBackgroundColorName);
            }
            textStyle.font = font;
        }

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            fBackgroundColorName = backgroundColorName;
        }


        @Override
        public void applyStyles(TextStyle textStyle) {
            ColorRegistry colorRegistry = JFaceResources.getColorRegistry();
            Font font = JFaceResources.getFontRegistry().getBold(fontName);
            if (fForegroundColorName != null) {
                textStyle.foreground = colorRegistry.get(fForegroundColorName);
            }
            if (fBackgroundColorName != null) {
                textStyle.background = colorRegistry.get(fBackgroundColorName);
            }
            textStyle.font = font;
        }

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            fontRegistry = new FontRegistry( getWorkbench().getDisplay() );
        }


        if ( colorRegistry == null )
        {
            colorRegistry = new ColorRegistry( getWorkbench().getDisplay() );
        }


        valueEditorPreferences = new ValueEditorsPreferences();


        if ( filterTemplateContextTypeRegistry == null )

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    * Initializes the given preference store with the default values.
   *
    * @param store the preference store to be initialized
    */
  public static void initializeDefaultValues(IPreferenceStore store) {
    ColorRegistry registry= null;
    if (PlatformUI.isWorkbenchRunning())
      registry= PlatformUI.getWorkbench().getThemeManager().getCurrentTheme().getColorRegistry();


    store.setDefault(AbstractDecoratedTextEditorPreferenceConstants.USE_ANNOTATIONS_PREFERENCE_PAGE, false);
    store.setDefault(AbstractDecoratedTextEditorPreferenceConstants.USE_QUICK_DIFF_PREFERENCE_PAGE, false);

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     */
    void setBackgroundColor(String colorName) {
        if (colorName == null) {
            colorName = DEFAULT_BG_COLOR;
        }
        final ColorRegistry colorRegistry = getColorRegistry();
        Color bgColor = null;
        synchronized (colorRegistry) {
            bgColor = colorRegistry.get(colorName);
            if (bgColor == null) {
                RGB backgroundRGB = obtainRGBFromString(colorName);
                if (backgroundRGB == null) {
                    bgColor = colorRegistry.get(DEFAULT_BG_COLOR);
                    if (bgColor == null) {
                        backgroundRGB = obtainRGBFromString(DEFAULT_BG_COLOR);
                        if (backgroundRGB == null) {
                            throw new IllegalStateException(
                                    "Could not obtain an"
                                            + " RGB value for default background color: \""
                                            + DEFAULT_BG_COLOR + "\"");
                        }
                        colorRegistry.put(colorName, backgroundRGB);
                        bgColor = colorRegistry.get(colorName);
                    }
                } else {
                    colorRegistry.put(colorName, backgroundRGB);
                    bgColor = colorRegistry.get(colorName);
                }
            }
        }


        // Also ensure that the background colour of child format composites

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     */
    void setBorderColor(String colorName) {
        if (colorName == null) {
            colorName = DEFAULT_BORDER_COLOR;
        }
        final ColorRegistry colorRegistry = EclipseCommonPlugin.getColorRegistry();
        Color borderColor = null;
        synchronized (colorRegistry) {
            borderColor = colorRegistry.get(colorName);
            if (borderColor == null) {
                RGB borderRGB = obtainRGBFromString(colorName);
                if (borderRGB == null) {
                    borderColor = colorRegistry.get(DEFAULT_BORDER_COLOR);
                    if (borderColor == null) {
                        borderRGB = obtainRGBFromString(DEFAULT_BORDER_COLOR);
                        if (borderRGB == null) {
                            throw new IllegalStateException(
                                    "Could not obtain an"
                                            + " RGB value for default border color: \""
                                            + DEFAULT_BORDER_COLOR + "\"");
                        }
                        colorRegistry.put(colorName, borderRGB);
                        borderColor = colorRegistry.get(colorName);
                    }
                } else {
                    colorRegistry.put(colorName, borderRGB);
                    borderColor = colorRegistry.get(colorName);
                }
            }
        }
        setBorderColor(borderColor);
    }

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     * Colours derived from the system e.g. selection colours may change
     * during the lifetime of the application. This method will keep such
     * colour up-to-date.
     */
    private void updateSystemColors() {
        final ColorRegistry colorRegistry = getColorRegistry();
        
        synchronized (colorRegistry) {            
            updateSystemColor(SystemColor.activeCaption,
                    ACTIVE_SELECTION_COLOR, colorRegistry);

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    public static synchronized ColorRegistry getColorRegistry() {
        if (COLOR_REGISTRY == null) {
            // This design ignores the possibility of multiple Display objects
            // within a plug-in.  The singleton is created with the current
            // Display object.
            COLOR_REGISTRY = new ColorRegistry();
        }
        return COLOR_REGISTRY;
    }

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    /**
     * Create a new StylegGroupTest
     */
    public StyledGroupTest(String title) {
        super(title);
        colorRegistry = new ColorRegistry(Display.getCurrent());
    }

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                return "Pane (" + getElement().getAttributeValue("name") + ")";
            }


            public ColorRegistry getColorRegistry() {
                if(colorRegistry==null) {
                    colorRegistry = new ColorRegistry();
                }
                return colorRegistry;
            }
        };
        GridData data = new GridData(GridData.FILL_BOTH);

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