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digitalmars.D.dwt - jface.snippets.Snippet040 : CellEditor is forward referenced when

reply yidabu <yidabu.spam gmail.com> writes:
compile time error on port jface.snippets.Snippet040TableViewerSorting :

CellEditor.d(47): class dwtx.jface.viewers.CellEditor.CellEditor is forward
referenced when looking for 'LayoutData'
ColumnViewerEditor.d(631): Error: no property 'LayoutData' for type
'dwtx.jface.viewers.CellEditor.CellEditor'
ColumnViewerEditor.d(631): Error: CellEditor.LayoutData is used as a type
ColumnViewerEditor.d(631): Error: cannot have parameter of type void


code:


/*******************************************************************************
 * Copyright (c) 2006 Tom Schindl and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Tom Schindl - initial API and implementation
 * Port to the D programming language:
 *     yidabu at gmail dot com  ( D China
http://www.d-programming-language-china.org/ )
 *******************************************************************************/
module jface.snippets.Snippet040TableViewerSorting;


// http://dev.eclipse.org/viewcvs/index.cgi/org.eclipse.jface.snippets/Eclipse%20JFace%20Snippets/org/eclipse/jface/snippets/viewers/Snippet040TableViewerSorting.java?view=markup

import dwtx.jface.viewers.CellEditor;
import dwtx.jface.viewers.ColumnLabelProvider;
import dwtx.jface.viewers.ColumnViewer;
import dwtx.jface.viewers.EditingSupport;
import dwtx.jface.viewers.IStructuredContentProvider;
import dwtx.jface.viewers.TableViewer;
import dwtx.jface.viewers.TableViewerColumn;
import dwtx.jface.viewers.TextCellEditor;
import dwtx.jface.viewers.Viewer;
import dwtx.jface.viewers.ViewerComparator;
import dwt.DWT;
import dwt.events.SelectionAdapter;
import dwt.events.SelectionEvent;
import dwt.layout.FillLayout;
import dwt.widgets.Display;
import dwt.widgets.Shell;

/**
 * Example usage of ViewerComparator in tables to allow sorting
 * 
 *  author Tom Schindl <tom.schindl bestsolution.at>
 * 
 */
 
void main(String[] args)
{
    Snippet040TableViewerSorting.main(args);
}
 
public class Snippet040TableViewerSorting {

	private class MyContentProvider : IStructuredContentProvider {

		public Object[] getElements(Object inputElement) {
			return cast (Person[]) inputElement;
		}

		public void dispose() {
		}

		public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
		}

	}

	public class Person {
		public String givenname;
		public String surname;
		public String email;

		public this(String givenname, String surname, String email) {
			this.givenname = givenname;
			this.surname = surname;
			this.email = email;
		}

	}

	protected abstract class AbstractEditingSupport : EditingSupport {
		private TextCellEditor editor;

		public this(TableViewer viewer) {
			super(viewer);
			this.editor = new TextCellEditor(viewer.getTable());
		}

		protected boolean canEdit(Object element) {
			return true;
		}

		protected CellEditor getCellEditor(Object element) {
			return editor;
		}

		protected void setValue(Object element, Object value) {
			doSetValue(element, value);
			getViewer().update(element, null);
		}

		protected abstract void doSetValue(Object element, Object value);
	}

	public this(Shell shell) {
		TableViewer v = new TableViewer(shell, DWT.BORDER | DWT.FULL_SELECTION);
		v.setContentProvider(new MyContentProvider());

		TableViewerColumn column = new TableViewerColumn(v, DWT.NONE);
		column.getColumn().setWidth(200);
		column.getColumn().setText("Givenname");
		column.getColumn().setMoveable(true);
		column.setLabelProvider(new class() ColumnLabelProvider {

			public String getText(Object element) {
				return (cast(Person) element).givenname;
			}
		});

		column.setEditingSupport(new class(v) AbstractEditingSupport {

			protected Object getValue(Object element) {
				return (cast(Person) element).givenname;
			}

			protected void doSetValue(Object element, Object value) {
				(cast(Person) element).givenname = value.toString();
			}

		});
		
		ColumnViewerSorter cSorter = new class(v,column) ColumnViewerSorter {

			protected int doCompare(Viewer viewer, Object e1, Object e2) {
				Person p1 = cast(Person) e1;
				Person p2 = cast(Person) e2;
				return p1.givenname.compareToIgnoreCase(p2.givenname);
			}
			
		};

		column = new TableViewerColumn(v, DWT.NONE);
		column.getColumn().setWidth(200);
		column.getColumn().setText("Surname");
		column.getColumn().setMoveable(true);
		column.setLabelProvider(new class() ColumnLabelProvider {

			public String getText(Object element) {
				return (cast(Person) element).surname;
			}

		});

		column.setEditingSupport(new class(v) AbstractEditingSupport {

			protected Object getValue(Object element) {
				return (cast(Person) element).surname;
			}

			protected void doSetValue(Object element, Object value) {
				(cast(Person) element).surname = value.toString();
			}

		});
		
		new class(v,column) ColumnViewerSorter {

			protected int doCompare(Viewer viewer, Object e1, Object e2) {
				Person p1 = cast(Person) e1;
				Person p2 = cast(Person) e2;
				return p1.surname.compareToIgnoreCase(p2.surname);
			}
			
		};

		column = new TableViewerColumn(v, DWT.NONE);
		column.getColumn().setWidth(200);
		column.getColumn().setText("E-Mail");
		column.getColumn().setMoveable(true);
		column.setLabelProvider(new class() ColumnLabelProvider {

			public String getText(Object element) {
				return (cast(Person) element).email;
			}

		});

		column.setEditingSupport(new class(v) AbstractEditingSupport {

			protected Object getValue(Object element) {
				return (cast(Person) element).email;
			}

			protected void doSetValue(Object element, Object value) {
				(cast(Person) element).email = value.toString();
			}

		});
		
		new class(v,column) ColumnViewerSorter {

			protected int doCompare(Viewer viewer, Object e1, Object e2) {
				Person p1 = cast(Person) e1;
				Person p2 = cast(Person) e2;
				return p1.email.compareToIgnoreCase(p2.email);
			}
			
		};

		Person[] model = createModel();
		v.setInput(model);
		v.getTable().setLinesVisible(true);
		v.getTable().setHeaderVisible(true);
		cSorter.setSorter(cSorter, ColumnViewerSorter.ASC);
	}

	private Person[] createModel() {
		Person[] elements = new Person[4];
		elements[0] = new Person("Tom", "Schindl",
				"tom.schindl bestsolution.at");
		elements[1] = new Person("Boris", "Bokowski",
				"Boris_Bokowski ca.ibm.com");
		elements[2] = new Person("Tod", "Creasey", "Tod_Creasey ca.ibm.com");
		elements[3] = new Person("Wayne", "Beaton", "wayne eclipse.org");

		return elements;
	}

	private static abstract class ColumnViewerSorter : ViewerComparator {
		public static final int ASC = 1;
		
		public static final int NONE = 0;
		
		public static final int DESC = -1;
		
		private int direction = 0;
		
		private TableViewerColumn column;
		
		private ColumnViewer viewer;
		
		public this(ColumnViewer viewer_, TableViewerColumn column_) {
			this.column = column_;
			this.viewer = viewer_;
			this.column.getColumn().addSelectionListener(new class() SelectionAdapter {

				public void widgetSelected(SelectionEvent e) {
					if( this.viewer.getComparator() !is null ) {
						if( this.viewer.getComparator() == this ) {
							int tdirection = this.direction;
							
							if( tdirection == ASC ) {
								setSorter(this, DESC);
							} else if( tdirection == DESC ) {
								setSorter(this, NONE);
							}
						} else {
							setSorter(this, ASC);
						}
					} else {
						setSorter(this, ASC);
					}
				}
			});
		}
		
		public void setSorter(ColumnViewerSorter sorter, int direction) {
			if( direction == NONE ) {
				column.getColumn().getParent().setSortColumn(null);
				column.getColumn().getParent().setSortDirection(DWT.NONE);
				viewer.setComparator(null);
			} else {
				column.getColumn().getParent().setSortColumn(column.getColumn());
				sorter.direction = direction;
				
				if( direction == ASC ) {
					column.getColumn().getParent().setSortDirection(DWT.DOWN);
				} else {
					column.getColumn().getParent().setSortDirection(DWT.UP);
				}
				
				if( viewer.getComparator() == sorter ) {
					viewer.refresh();
				} else {
					viewer.setComparator(sorter);
				}
				
			}
		}

		public int compare(Viewer viewer, Object e1, Object e2) {
			return direction * doCompare(viewer, e1, e2);
		}
		
		protected abstract int doCompare(Viewer viewer, Object e1, Object e2);
	}
	
	/**
	 *  param args
	 */
	public static void main(String[] args) {
		Display display = new Display();

		Shell shell = new Shell(display);
		shell.setLayout(new FillLayout());
		new Snippet040TableViewerSorting(shell);
		shell.open();

		while (!shell.isDisposed()) {
			if (!display.readAndDispatch())
				display.sleep();
		}

		display.dispose();

	}

}











-- 
yidabu <yidabu.spam gmail.com>
http://www.dsource.org/projects/dwin

D -(D Chinese):
http://www.d-programming-language-china.org/
http://bbs.d-programming-language-china.org/
http://dwin.d-programming-language-china.org/
http://scite4d.d-programming-language-china.org/
May 18 2008
parent Frank Benoit <keinfarbton googlemail.com> writes:
Thank you, yidaby.

I added your snippets
http://www.dsource.org/projects/dwt-samples/browser/jface/snippets/Snippet040TableViewerSorting.d?rev=88%3A9ed020f0c2a5

And to workaround the forward reference problem, i changed the CellEditor.
http://www.dsource.org/projects/dwt-addons/changeset/69%3A07b9d96fd764

Then i also added the compareToIgnoreCase to dwt-win/dwt-linux 
dwt.dwthelper.utils

There are a lot of problems with anonymous and nested classes in DMD. 
This is why i did move all those classes to top level scope.

It seems works now. I tested it on linux.
May 19 2008