Examples of org.locationtech.udig.project.command.Command

org.locationtech.udig.project.command.Command

A MapCommand in uDig describes an action that modifies the system's model.

Commands are single fire objects. They cannot be used more than once. This is to allow undoable commands to be a normal command, not a special case command.

Commands normally have factories associated with them, but they are also prototypes. The copy method returns a new MapCommand without the undo data. The new MapCommand can safely be executed with no negative side-effects.

@see A set of possible command categories are: zoom, pan, cut, paste, addVertex, etc.. Mostcommands are associated with tool whose job is to construct the commands. A MapCommand object describes an concrete change, for example: setBBox(0,0,1,1); setBBox(2,2,3,3) would be a separate object. @author jeichar


    private void go() {
      Coordinate newpos = parse(textArea.getText(),getContext().getCRS());
      if (Math.abs(newpos.x - position.x) > ACCURACY || Math.abs(newpos.y - position.y) > ACCURACY) {
        setPosition(newpos);
        Command c = new SetViewportCenterCommand(newpos);
        getContext().sendASyncCommand(c);
      }
    }

Examples of org.locationtech.udig.project.command.Command

Related Classes of org.locationtech.udig.project.command.Command