/*
* Request the proposals from the proposal provider, and recompute any
* caches. Repopulate the popup if it is open.
*/
private void recomputeProposals(ContentProposalList newProposalList) {
if (newProposalList == null) newProposalList = getEmptyProposalArray();
// If the non-filtered proposal list is empty, we should close the popup.
// See https://bugs.eclipse.org/bugs/show_bug.cgi?id=147377
if (newProposalList.length() == 0) {
this.proposalList = newProposalList;
close();
} else {
// Keep the popup open, but filter by any provided filter text
setProposals(newProposalList);
}
}
/*
* Return the current selected proposal.
*/
private IContentProposal getSelectedProposal() {
if (isValid()) {
int index = proposalTable.getSelectionIndex();
if (proposalList == null || index < 0 || index >= getTableLength()) {
return null;
}
int proposalIndex = 0;
for (String provider : proposalList.getProviderList()) {
if (index == proposalIndex) {
return null;
}
proposalIndex++;
for (IContentProposal proposal : proposalList.getProposals(provider)) {
if (index == proposalIndex) {
return proposal;
}
proposalIndex++;
}
}
}
return null;
}
/*
* Handle the set data event. Set the item data of the requested item to the
* corresponding proposal in the proposal cache.
*/
private void handleSetData(Event event) {
TableItem item = (TableItem) event.item;
int index = proposalTable.indexOf(item);
int proposalIndex = 0;
for (String provider : proposalList.getProviderList()) {
if (index == proposalIndex) {
int count = proposalList.getCount(provider);
String text = provider + " (" + count + " matching items)";
item.setText(text);
// Data == null => not selectable
item.setData(null);
Display display = Display.getCurrent();
Color color = display.getSystemColor(SWT.COLOR_GRAY);
FontData fontData = item.getFont().getFontData()[0];
Font font =
new Font(
display,
new FontData(fontData.getName(), fontData.getHeight(), SWT.ITALIC | SWT.BOLD));
item.setBackground(color);
item.setFont(font);
return;
}
proposalIndex++;
for (IContentProposal proposal : proposalList.getProposals(provider)) {
if (index == proposalIndex) {
item.setText(" " + getString(proposal));
item.setImage(getImage(proposal));
item.setData(proposal);
return;
}
proposalIndex++;
}
}
}
private int getTableLength() {
if (proposalList == null) return 0;
return proposalList.length() + proposalList.getProviderList().size();
}
/*
* Caches the specified proposals and repopulates the table if it has been
* created.
*/
private void setProposals(ContentProposalList newProposalList) {
if (newProposalList == null || newProposalList.length() == 0) {
newProposalList = getEmptyProposalArray();
}
this.proposalList = newProposalList;
if (!isValid()) return;
// If there is a table
if (isValid()) {
if (USE_VIRTUAL) {
// Set and clear the virtual table. Data will be
// provided in the SWT.SetData event handler.
proposalTable.setItemCount(getTableLength());
proposalTable.clearAll();
} else {
// Populate the table manually
proposalTable.setRedraw(false);
int itemCount = newProposalList.length() + newProposalList.getProviderList().size();
proposalTable.setItemCount(itemCount);
TableItem[] items = proposalTable.getItems();
int index = 0;
for (String provider : newProposalList.getProviderList()) {
TableItem item = items[index];
int count = newProposalList.getCount(provider);
String text = provider + " (" + count + " matching items)";
item.setText(text);
// Data == null => not selectable
item.setData(null);
Display display = Display.getCurrent();
Color color = display.getSystemColor(SWT.COLOR_GRAY);
FontData fontData = item.getFont().getFontData()[0];
Font font =
new Font(
display,
new FontData(fontData.getName(), fontData.getHeight(), SWT.ITALIC | SWT.BOLD));
item.setBackground(color);
item.setFont(font);
index++;
for (IContentProposal proposal : newProposalList.getProposals(provider)) {
item.setText(" " + getString(proposal));
item.setImage(getImage(proposal));
item.setData(proposal);
index++;
}
}
proposalTable.setRedraw(true);
}
// Default to the first selection if there is content.
if (newProposalList.length() > 0) {
int index = 0;
boolean selected = false;
for (String provider : newProposalList.getProviderList()) {
index++;
if (!selected && newProposalList.getCount(provider) > 0) {
selectProposal(index);
selected = true;
}
}
} else {
// No selection, close the secondary popup if it was open
if (infoPopup != null) {
infoPopup.close();
}
}
}
footer.setText("");
}