tests/auto/qml/qqmlecmascript/data/scarceResourceTest.var.js

   1 .import Qt.test 1.0 as JsQtTest
   2
   3 function importScarceResource(scarceResourceProvider) {
   4     // the scarce resource should be automatically released
   5     // after the binding is evaluated if preserve is not
   6     // called.
   7     return scarceResourceProvider.scarceResource;
   8 }
   9
  10 function importPreservedScarceResource(scarceResourceProvider) {
  11     // the scarce resource is manually preserved
  12     // during the evaluation of the binding.
  13     // it should not be released.
  14     var scarceResource = scarceResourceProvider.scarceResource;
  15     scarceResource.preserve();
  16     return scarceResource;
  17 }
  18
  19 function importReleasedScarceResource(scarceResourceProvider) {
  20     // release the scarce resource during the
  21     // evaluation of the binding.  The returned
  22     // variant will therefore be invalid.
  23     var scarceResource = scarceResourceProvider.scarceResource;
  24     scarceResource.destroy();
  25     return scarceResource;
  26 }
  27
  28 function importPreservedScarceResourceFromMultiple(scarceResourceProvider) {
  29     // some scarce resources are manually preserved,
  30     // some of them are manually destroyed,
  31     // and some are automatically managed.
  32     // We return a preserved resource
  33     var sr1 = scarceResourceProvider.scarceResource; // preserved/destroyed.
  34     sr1.preserve();
  35     var sr2 = scarceResourceProvider.scarceResource; // preserved/destroyed
  36     sr2.preserve();
  37     var sr3 = scarceResourceProvider.scarceResource; // automatic.
  38     var sr4 = scarceResourceProvider.scarceResource; // automatic and returned.
  39     var sr5 = scarceResourceProvider.scarceResource; // destroyed
  40     sr5.destroy();
  41     sr2.destroy();
  42     var sr6 = scarceResourceProvider.scarceResource; // destroyed
  43     var sr7 = scarceResourceProvider.scarceResource; // automatic
  44     sr1.destroy();
  45     sr6.destroy();
  46     return sr4;
  47 }
  48