private void adjustSize() {
int newHeight = mTextArea.getPreferredSize().height;
int maxHeight = mChatView.getHeight() / 3;
mScrollPane.setPreferredSize(
new Dimension(
mScrollPane.getWidth(),
newHeight < maxHeight
?
// grow
newHeight + 1
: // +1 for border
// fixed height
maxHeight));
// swing does not figure this out itself
mChatView.revalidate();
}
ComposingArea(ChatView chatView) {
mChatView = chatView;
mTextArea = new WebTextArea();
mTextArea.setMargin(View.MARGIN_SMALL);
mTextArea.setBorder(null);
mTextArea.setLineWrap(true);
mTextArea.setWrapStyleWord(true);
mTextArea.setFontSize(View.FONT_SIZE_NORMAL);
mTextArea.setInputPrompt(Tr.tr("Type to compose"));
mTextArea.setInputPromptHorizontalPosition(SwingConstants.LEFT);
mTextArea.setComponentPopupMenu(Utils.createCopyMenu(true));
mTextArea
.getDocument()
.addDocumentListener(
new DocumentChangeListener() {
@Override
public void documentChanged(DocumentEvent e) {
mChatView.onKeyTypeEvent(e.getDocument().getLength() == 0);
}
});
mScrollPane = new ComponentUtils.ScrollPane(mTextArea, false);
mScrollPane.setBorder(null);
// text area overlay
mOverlayLabel = new WebLabel().setBoldFont();
mOverlay =
new WebOverlay(mScrollPane, mOverlayLabel, SwingConstants.CENTER, SwingConstants.CENTER);
mOverlay.setUndecorated(false).setMargin(View.MARGIN_SMALL).setWebColoredBackground(false);
// old transfer handler of text area is fallback for bottom panel
mDropHandler = new FileDropHandler(mTextArea.getTransferHandler());
mTextArea.setTransferHandler(mDropHandler);
// when text changed...
mTextArea
.getDocument()
.addDocumentListener(
new DocumentChangeListener() {
@Override
public void documentChanged(DocumentEvent e) {
// these are strange times
SwingUtilities.invokeLater(
new Runnable() {
public void run() {
ComposingArea.this.adjustSize();
}
});
}
});
((AbstractDocument) mTextArea.getDocument())
.setDocumentFilter(
new DocumentFilter() {
@Override
public void replace(
FilterBypass fb, int offset, int length, String string, AttributeSet attr)
throws BadLocationException {
// input implementation of the "/me" command, XEP-0245
if (length == 0 && offset == 0 && string.equals("/")) {
fb.insertString(0, View.THE_ME_COMMAND, attr);
return;
}
super.replace(fb, offset, length, string, attr);
}
});
// ...or window is resized
mChatView.addComponentListener(
new ComponentAdapter() {
@Override
public void componentResized(ComponentEvent e) {
ComposingArea.this.adjustSize();
}
});
}
