Bug 125012 [Field Assist] Clarify lifecycle of the ILabelProvider used by ContentProposalAdapter
I20060119-0800 Clients who want to port their field content assistants from jface.text.contentassist to jface.fieldassist would expect to be able to supply an image in IContentProposal, e.g. with a 'Image getImage();' method as in ICompletionProposal. Without icons, e.g. proposals for java type names would look quite different from the ones you get in the java editor. There's also a lot more functionality in ICompletionProposal and the 4 ICompletionProposalExtension* interfaces. Some of those concepts must also be supported in fieldassist if clients such as the Find/Replace dialog and Java type completions in dialogs should switch (e.g. the additionalProposalInfo to show documentation for regex proposals, etc.). I can file separate bugs for these functionalities if you want to discuss them one by one.
bundles/org.eclipse.jface/src/org/eclipse/jface/fieldassist/ContentProposalAdapter.java
if (infoPopup != null)
							infoPopup.close();
					} else {
						TableItem item = (TableItem) e.item;
						IContentProposal proposal = (IContentProposal) item
								.getData();
						showProposalDescription(proposal.getDescription());
					}
				}
				
				public void widgetDefaultSelected(SelectionEvent e) {
					acceptCurrentProposal();
				}
			});
			
			GridData data = new GridData(GridData.FILL_BOTH);
			GC gc = new GC(proposalTable);
			gc.setFont(proposalTable.getFont());
			FontMetrics fontMetrics = gc.getFontMetrics();
			gc.dispose();
			data.widthHint = control.getBounds().width;
			data.heightHint = Dialog.convertHeightInCharsToPixels(fontMetrics,
					POPUP_CHARHEIGHT);
			proposalTable.setLayoutData(data);
			return proposalTable;
		}
		/*
		 * (non-Javadoc)
		 * 
		 * @see org.eclipse.jface.dialogs.PopupDialog.adjustBounds()