/**
* called when visibility of current fragment is (potentially) altered by * * drawer being
* shown/hidden * * whether buffer is shown in the pager (see MainPagerAdapter) * * availability
* of buffer & activity * * lifecycle
*/
public void maybeChangeVisibilityState() {
if (DEBUG_VISIBILITY) logger.debug("maybeChangeVisibilityState()");
if (activity == null || buffer == null) return;
// see if visibility has changed. if it hasn't, do nothing
boolean obscured = activity.isPagerNoticeablyObscured();
boolean watched = started && pagerVisible && !obscured;
if (buffer.isWatched == watched) return;
// visibility has changed.
if (watched) {
highlights = buffer.highlights;
privates = (buffer.type == Buffer.PRIVATE) ? buffer.unreads : 0;
}
buffer.setWatched(watched);
scrollToHotLineIfNeeded();
// move the read marker in weechat (if preferences dictate)
if (!watched && P.hotlistSync) {
EventBus.getDefault()
.post(new SendMessageEvent("input " + buffer.fullName + " /buffer set hotlist -1"));
EventBus.getDefault()
.post(
new SendMessageEvent(
"input " + buffer.fullName + " /input set_unread_current_buffer"));
}
}
// this method is using the following:
// lastVisibleLine last line that exists in the buffer. NOTE: "visible" here means line is
// not filtered in weechat
// readMarkerLine used for display. it is:
// * saved on app shutdown and restored on start
// * altered if a buffer has been read in weechat (see BufferList.saveLastReadLine)
// * set to the last displayed line when user navigates away from a buffer
// * shifted from invisible line to last visible line if buffer is filtered
private void maybeMoveReadMarker() {
if (DEBUG_VISIBILITY) logger.debug("maybeMoveReadMarker()");
if (buffer != null && buffer.readMarkerLine != buffer.lastVisibleLine) {
buffer.readMarkerLine = buffer.lastVisibleLine;
linesAdapter.needMoveLastReadMarker = true;
onLinesChanged();
}
}
/** attempts to perform tab completion on the current input */
@SuppressLint("SetTextI18n")
private void tryTabComplete() {
if (DEBUG_TAB_COMPLETE) logger.debug("tryTabComplete()");
if (buffer == null) return;
String txt = uiInput.getText().toString();
if (!tcInProgress) {
// find the end of the word to be completed
// blabla nick|
tcWordEnd = uiInput.getSelectionStart();
if (tcWordEnd <= 0) return;
// find the beginning of the word to be completed
// blabla |nick
tcWordStart = tcWordEnd;
while (tcWordStart > 0 && txt.charAt(tcWordStart - 1) != ' ') tcWordStart--;
// get the word to be completed, lowercase
if (tcWordStart == tcWordEnd) return;
String prefix = txt.substring(tcWordStart, tcWordEnd).toLowerCase();
// compute a list of possible matches
// nicks is ordered in last used comes first way, so we just pick whatever comes first
// if computed list is empty, abort
tcMatches = new Vector<>();
for (String nick : buffer.getLastUsedNicksCopy())
if (nick.toLowerCase().startsWith(prefix)) tcMatches.add(nick.trim());
if (tcMatches.size() == 0) return;
tcIndex = 0;
} else {
tcIndex = (tcIndex + 1) % tcMatches.size();
}
// get new nickname, adjust the end of the word marker
// and finally set the text and place the cursor on the end of completed word
String nick = tcMatches.get(tcIndex);
if (tcWordStart == 0) nick += ": ";
uiInput.setText(txt.substring(0, tcWordStart) + nick + txt.substring(tcWordEnd));
tcWordEnd = tcWordStart + nick.length();
uiInput.setSelection(tcWordEnd);
// altering text in the input box sets tcInProgress to false,
// so this is the last thing we do in this function:
tcInProgress = true;
}
private void attachToBuffer() {
logger.debug("attachToBuffer()");
buffer.setBufferEye(this);
linesAdapter = new ChatLinesAdapter(activity, buffer, uiLines);
linesAdapter.setFont(P.bufferFont);
linesAdapter.readLinesFromBuffer();
activity.runOnUiThread(
new Runnable() {
@Override
public void run() {
activity.updateCutePagerTitleStrip();
uiLines.setAdapter(linesAdapter);
maybeChangeHeader();
}
});
maybeChangeVisibilityState();
}
private void maybeChangeHeader() {
final LINES s = buffer.getLineStatus();
if (status == s) return;
status = s;
activity.runOnUiThread(
new Runnable() {
@Override
public void run() {
logger.debug("maybeChangeHeader(); {}", s);
if (s == LINES.EVERYTHING_FETCHED) {
uiMore.removeAllViews();
} else {
if (uiMore.getChildCount() == 0) uiMore.addView(uiMoreButton);
boolean more = s == LINES.CAN_FETCH_MORE;
uiMoreButton.setEnabled(more);
uiMoreButton.setTextColor(more ? 0xff80cbc4 : 0xff777777);
uiMoreButton.setText(more ? "Fetch more lines" : "Fetching lines…");
}
}
});
}
private void requestMoreLines() {
if (buffer.getLineStatus() == LINES.CAN_FETCH_MORE) {
buffer.requestMoreLines();
maybeChangeHeader();
}
}
// buffer might be null if we are closing fragment that is not connected
private void detachFromBuffer() {
if (DEBUG_LIFECYCLE) logger.debug("detachFromBuffer()");
maybeChangeVisibilityState();
if (buffer != null) buffer.setBufferEye(null);
buffer = null;
}