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Fix issue in running compare from the command line

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Because Compare uses threads, we need to make sure it is finished when a
compare is executed from the command line. This was a problem for command
sequences, because the next command would start running before the compare
was done, and the buffer with differences was available.

So this commit adds the "run-blocking" parameter when using
LFUN_DIALOG_SHOW to run a Compare. When calling Compare with run-sync, the
LFUN will wait for the compare worker thread to finish before returning and
possibly running the next command.
This commit is contained in:
Sam Crawley 2020-11-13 20:58:20 +13:00 committed by Pavel Sanda
parent 3784d79882
commit f457a32a13
2 changed files with 31 additions and 5 deletions
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33
src/frontends/qt/GuiCompare.cpp
View File

@ -303,7 +303,7 @@ Buffer const * GuiCompare::bufferFromFileName(string const & file) const
}
int GuiCompare::run()
int GuiCompare::run(bool blocking_mode)
{
progressBar->setValue(0);
@ -325,14 +325,21 @@ int GuiCompare::run()
options.settings_from_new = newSettingsRB->isChecked();
// init the compare object and start it
compare_ = new Compare(new_buffer_, old_buffer_, dest_buffer_, options);
connect(compare_, SIGNAL(error()), this, SLOT(error()));
connect(compare_, SIGNAL(finished(bool)), this, SLOT(finished(bool)));
// Only connect the finished() method to the signal if we're *not* in blocking_mode
// (i.e. we want to make it possible for caller to block for the results)
if (! blocking_mode) {
connect(compare_, SIGNAL(finished(bool)), this, SLOT(finished(bool)));
}
connect(compare_, SIGNAL(progress(int)), this, SLOT(progress(int)));
connect(compare_, SIGNAL(progressMax(int)), this, SLOT(progressMax(int)));
connect(compare_, SIGNAL(statusMessage(QString)),
this, SLOT(setStatusMessage(QString)));
compare_->start(QThread::LowPriority);
return 1;
}
@ -340,10 +347,28 @@ bool GuiCompare::initialiseParams(std::string const &par)
{
//just for the sake of parsing arguments
FuncRequest cmd(LFUN_UNKNOWN_ACTION, par);
if (cmd.getArg(0) == "run") {
if (cmd.getArg(0) == "run" || cmd.getArg(0) == "run-blocking") {
oldFileCB->setEditText(toqstr(cmd.getArg(1)));
newFileCB->setEditText(toqstr(cmd.getArg(2)));
slotOK();
if (cmd.getArg(0) == "run" ) {
// Run asynchronously
slotOK();
}
else {
// Run synchronously
enableControls(false);
if (! run(true)) {
error();
return false;
}
// Wait for the Compare function to process in a thread (2 minute timeout)
compare_->wait(120000);
finished(false);
}
}
progressBar->setValue(0);

3
src/frontends/qt/GuiCompare.h
View File

@ -85,7 +85,8 @@ private:
Buffer const * bufferFromFileName(std::string const & file) const;
/// create the compare object and run the comparison
int run();
/// if blocking_mode is true, run should execute so that the caller can block to wait for the results
int run(bool blocking_mode = false);
private:
/// the object that will do the comparison