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Analysis

Overview

This revision of the task will introduce CUT/COPY and PASTE operations for resources in Sophie2.0. It should also provide the implementation for clipboard operations with images(from, to and in Sophie2.0). If there is time left a prototype drag and drop functionality is considered to be implemented.

Task requirements

• Provide support for CUT/COPY/PASTE of resources.
  • From resource palette to the page work area
    • Copy an image resource from the resources palette and paste it to the page work area should create a new image frame with the selected resource.
    • Copy text resource from the resource palette and paste it to the page work area should create a new text frame with the selected resource.
    • It is optional to do this for other resources at this revision.
  • From resources palette to an application outside sophie.
    • Copy an image resource from the resources palette and paste it to an image editor.
    • For the text this function is already working.
• Create the hierarchy and logic how resources from the resources palette will be copied and pasted.

Task result

• source code.
• Optional:wiki content with diagrams.

Implementation idea

• Create implementations of DndData for resources.
  • Either one DndData or multiple for the different types of resources. Depends on the design.
• Create implementation of SophieTransferable for resources.
  • Again may need only one transferable for resources or several.
• Note: If implementing clipboard operations for resources turns out to be a difficult thing, consider implementing only Frame clipboard operations.
• Put the ImageData into the created transferables to support transferring images if needed.
• Optional: (If not done, SHOULD be put for the next revision!)
  • Supply base classes for drag and drop management.
    • Create a global drag and drop manager that will handle part of the drag and drop operations. The rest should be handled in the corresponding logic.
    • Create DndData implementations for resources.
    • After creating the drag and drop base classes, implement D'n'D for:
      • images
      • plain text
      • resources.
      • Note: This should be rather easy having in mind that we have already implemented the necessary DndDatas and SophieTransferables...
    • Provide a diagram of the D'n'd manager.
    • Create a wiki page named BASE_DND, to serve as a reference for all drag and drop and cut/copy/paste functionality. It should have all the design of the base library, as well as the already implemented functionality. For example explaining the use cases that are implemented.
  • Create a DndManager class. It should be able to provide the interaction between VisualElements.
  • Create the diagram using netbeans and put it in the newly created page. Put also the wiki content of the previous revision of this task.

Related

• BASE_DND_R0

How to demo

• Use case 1:
  • Start sophie.
  • Drag and drop or cut/copy and paste an image resource from resources palette to an image editor. (for example gimp).
    • The image should appear in the editor.
• Use case 2:
  • Start sophie.
    • Create some frames.
    • Drag and drop or cut/copy and paste a frame resource from the resource palette to the page work area.
      • The corresponding frame should appear as a copy of the selected one.

Design

• Create module org.sophie2.main.dnd with packages:
  • org.sophie2.main.dnd - with MainDndModule which is SophieModule for the module.
  • org.sophie2.main.dnd.dnddata - with ResourceData which is DndData for Sophie Resources.
  • org.sophie2.main.dnd.providers - ResourceDataProvider and ImageResourceDataProvider.
  • org.sophie2.main.dnd.transferables - ResourceTransferable which is a SophieTransferable for transfering resources.
• The org.sophie2.main.dnd module provides an extension point which interface is ResourceDataProvider. The module also attach an extension ImageResourceDataProvider to the extension point.
  • The idea is that every Sophie Resource should give a list with the DndDatas that support providing an extension to the ResourceDataProvider extension point.
  • The ResourceTransferable transfers a resource and fill in the list with the registered datas while going through the extensions that have attached to the extension point.
• The org.sophie2.main.dnd module provides an extension ResourceDndProvider to DndProvider extension point of org.sophi2.base.dnd.
• Using serialization, HotText can be copy/pasted between different Sophie-s. HotAttr, HotPos, HotStyleDef, HotStyleValue, HotUnit should implement Serializable.

• Unit tests
  • ImageDndDataTest in org.sophie2.base.dnd - tests ImageData.
  • ResourceDndDataTest in org.sophie2.main.dnd - tests ResourceData.

Implementation

[5424] [5456] [5457] [5535] [5536] [5539]

Merged to the trunk in [5566].

Testing

^{(Place the testing results here.)}

Comments

• On paste it is significant what is currently selected - for example, if you paste frame A in a book, but frame B is currently selected, frame A replaces frame B (in page work area, replacement is not a good idea for the resources palette since it is hard to select nothing there. This should be applied to all elements and behavior should be stated.
• During this revision copy/paste will be done by keyboard shortcuts, add this in the task overview
• "Duplicate" may be convinient and should be discussed, however, there's no need to add it to this task