Package org.eclipse.compare

Class CompareConfiguration

  • public class CompareConfiguration
extends Object
    A CompareConfiguration object controls various UI aspects of compare/merge viewers like title labels and images, or whether a side of a merge viewer is editable. In addition to these fixed properties CompareConfiguration provides API for an open ended set of properties. Different viewers which share the same configuration can communicate via this mechanism. E.g. if a compare editor has a button for controlling whether compare viewers ignore white space, the button would trigger a change of the boolean IGNORE_WHITESPACE property and all interested viewers would receive notification.

    Suitable default labels are provided (without images); both the left and right sides are editable.

    Clients may use this class as is, or subclass to add new state and behavior.

    • Field Detail

      • IGNORE_WHITESPACE

        public static final String IGNORE_WHITESPACE
        Name of the ignore whitespace property (value "IGNORE_WHITESPACE").
        See Also:
        Constant Field Values

      • SHOW_PSEUDO_CONFLICTS

        public static final String SHOW_PSEUDO_CONFLICTS
        Name of the show pseudo conflicts property (value "SHOW_PSEUDO_CONFLICTS").
        See Also:
        Constant Field Values

      • USE_OUTLINE_VIEW

        public static final String USE_OUTLINE_VIEW
        Name of the use outline view property (value "USE_OUTLINE_VIEW").
        Since:
        3.0
        See Also:
        Constant Field Values

      • MIRRORED

        public static final String MIRRORED
        Name of the mirrored property, i.e. if left input is shown on the right side and vice versa.
        Since:
        3.7
        See Also:
        Constant Field Values

    • Constructor Detail

      • CompareConfiguration

        public CompareConfiguration​(IPreferenceStore prefStore)
        Creates a new configuration with editable left and right sides, suitable default labels, and no images. The given preference store is used to connect this configuration with the Compare preference page properties ComparePreferencePage.INITIALLY_SHOW_ANCESTOR_PANE, CompareConfiguration.IGNORE_WHITESPACE and MIRRORED
        Parameters:
        prefStore - the preference store which this configuration holds onto.
        Since:
        2.0

      • CompareConfiguration

        public CompareConfiguration()
        Creates a new configuration with editable left and right sides, suitable default labels, and no images. This configuration uses the preference store of the Compare plug-in (CompareUIPlugin.getDefault().getPreferenceStore()).

    • Method Detail

      • getPreferenceStore

        public IPreferenceStore getPreferenceStore()
        Returns the preference store of this configuration.
        Returns:
        the preference store of this configuration.
        Since:
        2.0

      • getImage

        public Image getImage​(int kind)
        Returns an image showing the specified change kind. The different kind of changes are defined in the Differencer. Newly created images are remembered by this class and disposed when the dispose method is called.
        Parameters:
        kind - the kind of change as defined in Differencer.
        Returns:
        an modification of the base image reflecting the kind of change or null if there is no image descriptor registered for given id.
        Since:
        2.0
        See Also:
        Differencer

      • getImage

        public Image getImage​(Image base,
                      int kind)
        Returns an image showing the specified change kind applied to a given base image. The different kind of changes are defined in the Differencer. Typically an implementation would build a composite image from the given base image and an image representing the change kind. Newly created images are remembered by this class and disposed when the dispose method is called.
        Parameters:
        base - the image which is modified to reflect the kind of change
        kind - the kind of change as defined in Differencer.
        Returns:
        an modification of the base image reflecting the kind of change.
        See Also:
        Differencer

      • isMirrored

        public boolean isMirrored()
        Only the views are mirrored. All model values for left and right are not changed!
        Returns:
        true if the left and right side of the viewer are mirrored. Default is false.
        Since:
        3.7

      • dispose

        public void dispose()
        Dispose of this compare configuration. This method is called if the compare configuration is no longer used. An implementation must dispose of all resources.

      • setProperty

        public void setProperty​(String key,
                        Object newValue)
        Sets the property with the given name. If the new value differs from the old a PropertyChangeEvent is sent to registered listeners.
        Parameters:
        key - the name of the property to set
        newValue - the new value of the property

      • getProperty

        public Object getProperty​(String key)
        Returns the property with the given name, or null if no such property exists.
        Parameters:
        key - the name of the property to retrieve
        Returns:
        the property with the given name, or null if not found

      • setAncestorLabel

        public void setAncestorLabel​(String label)
        Sets the label to use for the ancestor of compare/merge viewers. This label will be used if the element for which a label is requested does not have an ancestor or the element does not have a registered label provider or the label provider returns null as the label.
        Parameters:
        label - the new label for the ancestor of compare/merge viewers

      • getAncestorLabel

        public String getAncestorLabel​(Object element)
        Returns the label for the ancestor side of compare/merge viewers. This label is typically shown in the title of the ancestor area in a compare viewer.
        Parameters:
        element - the input object of a compare/merge viewer or null
        Returns:
        the label for the ancestor side or null

      • setAncestorImage

        public void setAncestorImage​(Image image)
        Sets the image to use for the ancestor of compare/merge viewers. The CompareConfiguration does not automatically dispose the old image. This image will be used if the element for which a image is requested does not have an ancestor or the element does not have a registered label provider or the label provider returns null as the image.
        Parameters:
        image - the new image for the ancestor of compare/merge viewers

      • getAncestorImage

        public Image getAncestorImage​(Object element)
        Returns the image for the ancestor side of compare/merge viewers. This image is typically shown in the title of the ancestor area in a compare viewer.
        Parameters:
        element - the input object of a compare/merge viewer or null
        Returns:
        the image for the ancestor side or null

      • setLeftEditable

        public void setLeftEditable​(boolean editable)
        Controls whether the left side of a merge viewer is editable.
        Parameters:
        editable - if the value is true left side is editable

      • isLeftEditable

        public boolean isLeftEditable()
        Returns whether the left hand side of a merge viewer is editable.
        Returns:
        true if the left hand side is editable

      • setLeftLabel

        public void setLeftLabel​(String label)
        Sets the label to use for the left side of compare/merge viewers. This label will be used if the element for which a label is requested does not have a left contributor or the element does not have a registered label provider or the label provider returns null as the label.
        Parameters:
        label - the new label for the left side of compare/merge viewers

      • getLeftLabel

        public String getLeftLabel​(Object element)
        Returns the label for the left hand side of compare/merge viewers. This label is typically shown in the title of the left side of a compare viewer.
        Parameters:
        element - the input object of a compare/merge viewer or null
        Returns:
        the label for the left hand side or null

      • setLeftImage

        public void setLeftImage​(Image image)
        Sets the image to use for the left side of compare/merge viewers. The compare configuration does not automatically dispose the old image. This image will be used if the element for which a image is requested does not have an left contributor or the element does not have a registered label provider or the label provider returns null as the image.
        Parameters:
        image - the new image for the left side of compare/merge viewers

      • getLeftImage

        public Image getLeftImage​(Object element)
        Returns the image for the left hand side of compare/merge viewers. This image is typically shown in the title of the left side of a compare viewer.
        Parameters:
        element - the input object of a compare/merge viewer or null
        Returns:
        the image for the left hand side or null

      • setRightEditable

        public void setRightEditable​(boolean editable)
        Controls whether the right side of a merge viewer is editable.
        Parameters:
        editable - if the value is true right side is editable

      • isRightEditable

        public boolean isRightEditable()
        Returns whether the right hand side of a merge viewer is editable.
        Returns:
        true if the right hand side is editable

      • setRightLabel

        public void setRightLabel​(String label)
        Sets the label to use for the right side of compare/merge viewers. This label will be used if the element for which a label is requested does not have an right contributor or the element does not have a registered label provider or the label provider returns null as the label.
        Parameters:
        label - the new label for the right side of compare/merge viewers

      • getRightLabel

        public String getRightLabel​(Object element)
        Returns the label for the right hand side of compare/merge viewers. This label is typically shown in the title of the right side of a compare viewer.
        Parameters:
        element - the input object of a compare/merge viewer or null
        Returns:
        the label for the right hand side or null

      • setRightImage

        public void setRightImage​(Image image)
        Sets the image to use for the right side of compare/merge viewers. The compare configuration does not automatically dispose the old image. This image will be used if the element for which a image is requested does not have an right contributor or the element does not have a registered label provider or the label provider returns null as the image.
        Parameters:
        image - the new image for the right side of compare/merge viewers

      • getRightImage

        public Image getRightImage​(Object element)
        Returns the image for the right hand side of compare/merge viewers. This image is typically shown in the title of the right side of a compare viewer.
        Parameters:
        element - the input object of a compare/merge viewer or null
        Returns:
        the image for the right hand side or null

      • getContainer

        public ICompareContainer getContainer()
        Return the container of the compare associated with this configuration.
        Returns:
        the container of the compare associated with this configuration
        Since:
        3.3

      • setContainer

        public void setContainer​(ICompareContainer container)
        Set the container of the compare associated with this configuration.
        Parameters:
        container - the container of the compare associated with this configuration.
        Since:
        3.3

      • setLabelProvider

        public void setLabelProvider​(ICompareInput input,
                             ICompareInputLabelProvider labelProvider)
        Set the label provider for the given compare input. The compare configuration will not dispose of the label provider when the configuration is disposed. It is up to the provider of the label provider to ensure that it is disposed when it is no longer needed.
        Parameters:
        input - the compare input
        labelProvider - the label provider for the compare input
        Since:
        3.3

      • setDefaultLabelProvider

        public void setDefaultLabelProvider​(ICompareInputLabelProvider labelProvider)
        Set the default label provider for this configuration. The default label provider is used when a particular label provider has not been assigned using setLabelProvider(ICompareInput, ICompareInputLabelProvider). The compare configuration will not dispose of the label provider when the configuration is disposed. It is up to the provider of the label provider to ensure that it is disposed when it is no longer needed.
        Parameters:
        labelProvider - the default label provider
        Since:
        3.3