Class: DropObject

• Inheritance
• Description
• Class protocol
  • defaults
  • image specs
  • instance creation
• Instance protocol
  • accessing
  • testing
• Private classes

Inheritance:

   Object
   |
   +--DropObject
      |
      +--DropObject::Class
      |
      +--DropObject::Color
      |
      +--DropObject::File
      |
      +--DropObject::Image
      |
      +--DropObject::Method
      |
      +--DropObject::Project
      |
      +--DropObject::Text

Package:

stx:libview2

Category:

Interface-DragAndDrop

Version:

rev: 1.30 date: 2023/11/22 08:46:19

user: stefan

file: DropObject.st directory: libview2

module: stx stc-classLibrary: libview2

Description:

instances of myself and subclasses wrap objects which are being
dragged (and dropped).
Any object can be dragged, but for some often encountered types,
specialized subclasses are provided, which react to certain queries.

copyright
COPYRIGHT (c) 1997 by eXept Software AG
             All Rights Reserved

This software is furnished under a license and may be used
only in accordance with the terms of that license and with the
inclusion of the above copyright notice.   This software may not
be provided or otherwise made available to, or used by, any
other person.  No title to or ownership of the software is
hereby transferred.

Class protocol:

 displayObject: aDisplayObject

set the object which is shown while dragging;
this object must understand #displayOn:x:y: (i.e. the displayObject
protocol). The object is kept per class for ALL future drag operations.
Useful to change the default images in subclasses.

 displayImage

This resource specification was automatically generated
by the ImageEditor of ST/X.

Usage example(s):

self displayImage inspect ImageEditor openOnClass:self andSelector:#displayImage Icon flushCachedIcons

 dropObjectClassFor: someThing

given something to drag&drop, return an appropriate
dropObject class for it.

 new: anObject

create an instance on anObject

 newClass: aClass

create an instance for a class (dragging a class from a browser)

 newColor: aColor

create an instance for a color (dragging a color from a bitmap editor)

 newFile: aFilename

create an instance for a file or directory (dragging a file in a fileBrowser)

 newFileInArchive: aFilename

create an instance for a file or directory contained inside an archive
(dragging a file from an archive shown in a fileBrowser)

 newImage: anImageOrForm

create an instance for an image

 newInstanceOf: aClass for: someThing

create an instance on something

 newMethod: aMethod

create an instance for a method (dragging a method in a browser)

 newProject: aPackageSymbol

create an instance for a package (dragging a package from a browser)

 newText: aTextOrString

create an instance for some text (dragging some text from an editor)

Instance protocol:

 asDragAndDropDisplayObjectOn: aDevice

return my graphical representation

 displayObject

return my graphical representation - here a default is returned

 displayObject: anObject

set my graphical representation

 theObject

return the real object represented by the receiver

 theObject: something

set the real object represented by the receiver

 isClassObject

return true, if the dropObject represents some class

 isColorObject

return true, if the dropObject represents a color

 isFileInArchive

 isFileObject

return true, if the dropObject represents some file or directory

 isImageObject

return true, if the dropObject represents some image

 isMethodObject

return true, if the dropObject represents some method

 isProjectObject

return true, if the dropObject represents some project

 isTextObject

return true, if the dropObject represents some text

Private classes:

    Class
    Color
    File
    FileInArchive
    Image
    Method
    Project
    Text