X-Git-Url: http://git.indexdata.com/?p=irspy-moved-to-github.git;a=blobdiff_plain;f=lib%2FZOOM%2FIRSpy%2FTask.pm;h=8e3f251a26330d543fca904f8046003ddb6b7e7d;hp=e39e18400188c85e738d28f4cd2ad67782a27497;hb=42a6319d3dd983f11a4318e83dce3c02014835f2;hpb=744326399dd931fc8e5360ffa0493f641b91e970

diff --git a/lib/ZOOM/IRSpy/Task.pm b/lib/ZOOM/IRSpy/Task.pm
index e39e184..8e3f251 100644
--- a/lib/ZOOM/IRSpy/Task.pm
+++ b/lib/ZOOM/IRSpy/Task.pm
@@ -1,4 +1,4 @@
-# $Id: Task.pm,v 1.2 2006-10-12 14:36:34 mike Exp $
+# $Id: Task.pm,v 1.7 2007-08-01 15:11:03 mike Exp $
 
 package ZOOM::IRSpy::Task;
 
@@ -32,13 +32,14 @@ pointer to the next task to be performed after this.
 
 sub new {
     my $class = shift();
-    my($conn, $udata, %cb) = @_;
+    my($conn, $udata, $options, %cb) = @_;
 
     return bless {
 	irspy => $conn->{irspy},
 	conn => $conn,
-	cb => \%cb,
 	udata => $udata,
+	options => $options,
+	cb => \%cb,
 	timeRegistered => time(),
     }, $class;
 }
@@ -64,6 +65,37 @@ sub run {
     die "can't run base-class task $this";
 }
 
+# In general, this sets the Connection's options to what is in the
+# task's option hash and sets the option-hash entry to the
+# Connection's old value of the option: this means that calling this
+# twice restores the state to how it was before.  (That's not quite
+# true as its impossible to unset an option that was previously set:
+# such options are instead set to the empty string.)
+#
+# As a special case, options in the task's option-hash whose names
+# begin with an asterisk are taken to be persistent: they are set into
+# the Connection (with the leading hash removed) and deleted from the
+# task's option-hash so that they will NOT be reset the next time this
+# function is called.
+#
+sub set_options {
+    my $this = shift();
+
+    foreach my $key (sort keys %{ $this->{options} }) {
+	my $value = $this->{options}->{$key};
+	my $persistent = ($key =~ s/^\*//);
+	$value = "" if !defined $value;
+	$this->conn()->log("irspy_debug", "$this setting option '$key' -> ",
+			   defined $value ? "'$value'" : "undefined");
+	my $old = $this->conn()->option($key, $value);
+	if ($persistent) {
+	    delete $this->{options}->{"*$key"}
+	} else {
+	    $this->{options}->{$key} = $old;
+	}
+    }
+}
+
 sub render {
     my $this = shift();
     return "[base-class] " . ref($this);