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Eclipse Platform
Release 3.5
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org.eclipse.ui.part
Class FileEditorInput


java.lang.Object
  extended by 

org.eclipse.core.runtime.PlatformObject
      extended by 
org.eclipse.ui.part.FileEditorInput
All Implemented Interfaces:
IAdaptable, IEditorInput, IFileEditorInput, IPathEditorInput, IPersistable, IPersistableElement, IStorageEditorInput, IURIEditorInput
Direct Known Subclasses:
FileInPlaceEditorInput 
public class FileEditorInput

extends 
PlatformObject

implements 
IFileEditorInput, 
IPathEditorInput, 
IURIEditorInput, 
IPersistableElement

Adapter for making a file resource a suitable input for an editor.

This class may be instantiated; it is not intended to be subclassed.

Restriction:
This class is not intended to be subclassed by clients.

Constructor Summary
FileEditorInput ( IFile file)
          Creates an editor input based of the given file resource.
 
Method Summary
 boolean equals ( Object obj)
           
 boolean exists ()
          Returns whether the editor input exists.
  Object getAdapter ( Class adapter)
          Returns an object which is an instance of the given class associated with this object.
  String getFactoryId ()
          Returns the id of the element factory which should be used to re-create this object.
  IFile getFile ()
          Returns the file resource underlying this editor input.
  ImageDescriptor getImageDescriptor ()
          Returns the image descriptor for this input.
  String getName ()
          Returns the name of this editor input for display purposes.
  IPath getPath ()
          Returns the local file system path of the file underlying this editor input.
  IPersistableElement getPersistable ()
          Returns an object that can be used to save the state of this editor input.
  IStorage getStorage ()
          Returns the underlying IStorage object.
  String getToolTipText ()
          Returns the tool tip text for this editor input.
  URI getURI ()
          Returns the URI of the file underlying this editor input.
 int hashCode ()
           
static boolean isLocalFile ( IFile file)
          Return whether or not file is local.
 void saveState ( IMemento memento)
          Saves the state of the object in the given memento.
  String toString ()
           
 
Methods inherited from class java.lang. Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
 

Constructor Detail

FileEditorInput

public FileEditorInput(
IFile file)
Creates an editor input based of the given file resource.

Parameters:
file - the file resource
Method Detail

isLocalFile

public static boolean isLocalFile(
IFile file)
Return whether or not file is local. Only IFiles with a local value should call IPathEditorInput.getPath()

Parameters:
file -
Returns:
boolean true if the file has a local implementation.
Since:
3.4

hashCode

public int hashCode()
Overrides:
hashCode in class Object

equals

public boolean equals(
Object obj)
Overrides:
equals in class Object

exists

public boolean exists()
Description copied from interface: IEditorInput
Returns whether the editor input exists.

This method is primarily used to determine if an editor input should appear in the "File Most Recently Used" menu. An editor input will appear in the list until the return value of exists becomes false or it drops off the bottom of the list.

Specified by:
exists in interface IEditorInput
Returns:
true if the editor input exists; false otherwise

getFactoryId

public 
String getFactoryId()
Description copied from interface: IPersistableElement
Returns the id of the element factory which should be used to re-create this object.

Factory ids are declared in extensions to the standard extension point "org.eclipse.ui.elementFactories".

Specified by:
getFactoryId in interface IPersistableElement
Returns:
the element factory id
See Also:
IElementFactory

getFile

public 
IFile getFile()
Description copied from interface: IFileEditorInput
Returns the file resource underlying this editor input.

The IFile returned can be a handle to a resource that does not exist in the workspace. As such, an editor should provide appropriate feedback to the user instead of simply failing during input validation. For example, a text editor could open in read-only mode with a message in the text area to inform the user that the file does not exist.

Specified by:
getFile in interface IFileEditorInput
Returns:
the underlying file

getImageDescriptor

public 
ImageDescriptor getImageDescriptor()
Description copied from interface: IEditorInput
Returns the image descriptor for this input.

Note: although a null return value has never been permitted from this method, there are many known buggy implementations that return null. Clients that need the image for an editor are advised to use IWorkbenchPart.getImage() instead of IEditorInput.getImageDescriptor(), or to recover from a null return value in a manner that records the ID of the problematic editor input. Implementors that have been returning null from this method should pick some other default return value (such as ImageDescriptor.getMissingImageDescriptor()).

Specified by:
getImageDescriptor in interface IEditorInput
Returns:
the image descriptor for this input; may be null if there is no image.

getName

public 
String getName()
Description copied from interface: IEditorInput
Returns the name of this editor input for display purposes.

For instance, when the input is from a file, the return value would ordinarily be just the file name.

Specified by:
getName in interface IEditorInput
Returns:
the name string; never null;

getPersistable

public 
IPersistableElement getPersistable()
Description copied from interface: IEditorInput
Returns an object that can be used to save the state of this editor input.

Specified by:
getPersistable in interface IEditorInput
Returns:
the persistable element, or null if this editor input cannot be persisted

getStorage

public 
IStorage getStorage()
Description copied from interface: IStorageEditorInput
Returns the underlying IStorage object.

Specified by:
getStorage in interface IStorageEditorInput
Returns:
an IStorage object.

getToolTipText

public 
String getToolTipText()
Description copied from interface: IEditorInput
Returns the tool tip text for this editor input. This text is used to differentiate between two input with the same name. For instance, MyClass.java in folder X and MyClass.java in folder Y. The format of the text varies between input types.

Specified by:
getToolTipText in interface IEditorInput
Returns:
the tool tip text; never null.

saveState

public void saveState(
IMemento memento)
Description copied from interface: IPersistable
Saves the state of the object in the given memento.

Specified by:
saveState in interface IPersistable
Parameters:
memento - the storage area for object's state

getURI

public 
URI getURI()
Description copied from interface: IURIEditorInput
Returns the URI of the file underlying this editor input.

Specified by:
getURI in interface IURIEditorInput
Returns:
URI

getPath

public 
IPath getPath()
Description copied from interface: IPathEditorInput
Returns the local file system path of the file underlying this editor input.

Specified by:
getPath in interface IPathEditorInput
Returns:
a local file system path

toString

public 
String toString()
Overrides:
toString in class Object

getAdapter

public 
Object getAdapter(
Class adapter)
Description copied from class: PlatformObject
Returns an object which is an instance of the given class associated with this object. Returns null if no such object can be found.

This implementation of the method declared by IAdaptable passes the request along to the platform's adapter manager; roughly Platform.getAdapterManager().getAdapter(this, adapter). Subclasses may override this method (however, if they do so, they should invoke the method on their superclass to ensure that the Platform's adapter manager is consulted).

Specified by:
getAdapter in interface IAdaptable
Overrides:
getAdapter in class PlatformObject
Parameters:
adapter - the class to adapt to
Returns:
the adapted object or null
See Also:
IAdaptable.getAdapter(Class)
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Eclipse Platform
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