JBoolean
JXExprEditor::EIPGetExternalClipboard
(
JString* text
)
{
text->Clear();
JBoolean gotData = kJFalse;
JXSelectionManager* selManager = GetSelectionManager();
JArray<Atom> typeList;
if (selManager->GetAvailableTypes(kJXClipboardName, CurrentTime, &typeList))
{
JBoolean canGetText = kJFalse;
Atom textType = None;
const JSize typeCount = typeList.GetElementCount();
for (JIndex i=1; i<=typeCount; i++)
{
Atom type = typeList.GetElement(i);
if (type == XA_STRING ||
(!canGetText && type == selManager->GetTextXAtom()))
{
canGetText = kJTrue;
textType = type;
break;
}
}
Atom returnType;
unsigned char* data = NULL;
JSize dataLength;
JXSelectionManager::DeleteMethod delMethod;
if (canGetText &&
selManager->GetData(kJXClipboardName, CurrentTime, textType,
&returnType, &data, &dataLength, &delMethod))
{
if (returnType == XA_STRING)
{
*text = JString(reinterpret_cast<JCharacter*>(data), dataLength);
gotData = kJTrue;
}
selManager->DeleteData(&data, delMethod);
}
else
{
(JGetUserNotification())->ReportError(
"Unable to paste the current contents of the X Clipboard.");
}
}
else
{
(JGetUserNotification())->ReportError("The X Clipboard is empty.");
}
return gotData;
}
void
ClipboardWidget::Paste()
{
// Get the window and selection manager for use below.
JXWindow* window = GetWindow();
JXSelectionManager* selMgr = GetSelectionManager();
// If the clipboard is not empty, retrieve the available types.
JArray<Atom> typeList;
if (selMgr->GetAvailableTypes(kJXClipboardName, CurrentTime, &typeList))
{
// Loop through the available types to see if the clipboard has
// one that we want.
const JSize typeCount = typeList.GetElementCount();
for (JIndex i=1; i<=typeCount; i++)
{
const Atom atom = typeList.GetElement(i);
// Check if the i-th type is one we can use.
if (atom == XA_STRING || atom == selMgr->GetTextXAtom())
{
// Get the data of the appropriate type.
unsigned char* data = NULL;
JSize dataLength;
Atom returnType;
JXSelectionManager::DeleteMethod dMethod;
if (selMgr->GetData(kJXClipboardName, CurrentTime,
atom, &returnType, &data, &dataLength,
&dMethod))
{
// We can only handle the simplest format.
if (returnType == XA_STRING)
{
// Copy the data into our text.
itsText.Set(reinterpret_cast<JCharacter*>(data), dataLength);
// Our text changed, so we need to refresh.
Refresh();
}
// This is required to delete the allocated data.
// Forgetting to do this will cause a memory leak!
selMgr->DeleteData(&data, dMethod);
if (returnType == XA_STRING)
{
// We succeeded, so we return.
return;
}
}
else
{
(JGetUserNotification())->ReportError(
"Unable to retrieve text from the clipboard.");
}
}
}
// If we got this far, the data type that we want wasn't on the
// clipboard.
(JGetUserNotification())->ReportError("Unable to paste from clipboard.");
}
else
{
// There isn't anything on the clipboard.
(JGetUserNotification())->ReportError("Clipboard is empty.");
}
}