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-rw-r--r--src/qml/doc/snippets/qml/integrating-javascript/scarceresources/avatarExample.cpp144
1 files changed, 81 insertions, 63 deletions
diff --git a/src/qml/doc/snippets/qml/integrating-javascript/scarceresources/avatarExample.cpp b/src/qml/doc/snippets/qml/integrating-javascript/scarceresources/avatarExample.cpp
index d74cc13d04..b41a9b4dff 100644
--- a/src/qml/doc/snippets/qml/integrating-javascript/scarceresources/avatarExample.cpp
+++ b/src/qml/doc/snippets/qml/integrating-javascript/scarceresources/avatarExample.cpp
@@ -51,84 +51,102 @@
#include "avatarExample.h"
#include <QQmlEngine>
#include <QQmlComponent>
+#include <QGuiApplication>
-void registerTypes()
+struct Expectations
{
-//![0]
- qmlRegisterType<AvatarExample>("Qt.example", 1, 0, "AvatarExample");
-//![0]
-}
+ QQmlEngine engine;
-void expectOne()
-{
+ void expectOne()
+ {
//![1]
-QQmlComponent component(&engine, "exampleOne.qml");
-QObject *object = component.create();
-// The scarce resource will have been released automatically
-// by this point, after the binding expression was evaluated.
-delete object;
+ QQmlComponent component(&engine, "qrc:/exampleOne.qml");
+ QObject *object = component.create();
+ // The scarce resource will have been released automatically
+ // by this point, after the binding expression was evaluated.
+ bool expectedResult = (object->property("avatarWidth").toInt() == 100);
+ delete object;
//![1]
-}
+ Q_ASSERT(expectedResult);
+ }
-void expectTwo()
-{
+ void expectTwo()
+ {
//![2]
-QQmlComponent component(&engine, "exampleTwo.qml");
-QObject *object = component.create();
-// The scarce resource will not have been released automatically
-// after the binding expression was evaluated.
-// Since the scarce resource was not released explicitly prior
-// to the binding expression being evaluated, we get:
-bool expectedResult = (object->property("avatar").isValid() == true);
-delete object;
+ QQmlComponent component(&engine, "qrc:/exampleTwo.qml");
+ QObject *object = component.create();
+ // The scarce resource will not have been released automatically
+ // after the binding expression was evaluated.
+ // Since the scarce resource was not released explicitly prior
+ // to the binding expression being evaluated, we get:
+ bool expectedResult = (object->property("avatar").isValid() == true);
+ delete object;
//![2]
-}
+ Q_ASSERT(expectedResult);
+ }
-void expectThree()
-{
+ void expectThree()
+ {
//![3]
-QQmlComponent component(&engine, "exampleThree.qml");
-QObject *object = component.create();
-// The resource was preserved explicitly during evaluation of the
-// JavaScript expression. Thus, during property assignment, the
-// scarce resource was still valid, and so we get:
-bool expectedResult = (object->property("avatar").isValid() == true);
-// The scarce resource will not be released until all references to
-// the resource are released, and the JavaScript garbage collector runs.
-delete object;
+ QQmlComponent component(&engine, "qrc:/exampleThree.qml");
+ QObject *object = component.create();
+ // The resource was preserved explicitly during evaluation of the
+ // JavaScript expression. Thus, during property assignment, the
+ // scarce resource was still valid, and so we get:
+ bool expectedResult = (object->property("avatar").isValid() == true);
+ // The scarce resource will not be released until all references to
+ // the resource are released, and the JavaScript garbage collector runs.
+ delete object;
//![3]
-}
+ Q_ASSERT(expectedResult);
+ }
-void expectFour()
-{
+ void expectFour()
+ {
//![4]
-QQmlComponent component(&engine, "exampleFour.qml");
-QObject *object = component.create();
-// The scarce resource was explicitly preserved by the client during
-// the importAvatar() function, and so the scarce resource
-// remains valid until the explicit call to releaseAvatar(). As such,
-// we get the expected results:
-bool expectedResultOne = (object->property("avatarOne").isValid() == true);
-bool expectedResultTwo = (object->property("avatarTwo").isValid() == false);
-// Because the scarce resource referenced by avatarTwo was released explicitly,
-// it will no longer be consuming any system resources (beyond what a normal
-// JS Object would; that small overhead will exist until the JS GC runs, as per
-// any other JavaScript object).
-delete object;
+ QQmlComponent component(&engine, "qrc:/exampleFour.qml");
+ QObject *object = component.create();
+ // The scarce resource was explicitly preserved by the client during
+ // the importAvatar() function, and so the scarce resource
+ // remains valid until the explicit call to releaseAvatar(). As such,
+ // we get the expected results:
+ bool expectedResultOne = (object->property("avatarOne").isValid() == true);
+ bool expectedResultTwo = (object->property("avatarTwo").isValid() == false);
+ // Because the scarce resource referenced by avatarTwo was released explicitly,
+ // it will no longer be consuming any system resources (beyond what a normal
+ // JS Object would; that small overhead will exist until the JS GC runs, as per
+ // any other JavaScript object).
+ delete object;
//![4]
-}
+ Q_ASSERT(expectedResultOne);
+ Q_ASSERT(expectedResultTwo);
+ }
-void expectFive()
-{
+ void expectFive()
+ {
//![5]
-QQmlComponent component(&engine, "exampleFive.qml");
-QObject *object = component.create();
-// We have the expected results:
-bool expectedResultOne = (object->property("avatarOne").isValid() == false);
-bool expectedResultTwo = (object->property("avatarTwo").isValid() == false);
-// Because although only avatarTwo was explicitly released,
-// avatarOne and avatarTwo were referencing the same
-// scarce resource.
-delete object;
+ QQmlComponent component(&engine, "qrc:/exampleFive.qml");
+ QObject *object = component.create();
+ // We have the expected results:
+ bool expectedResultOne = (object->property("avatarOne").isValid() == false);
+ bool expectedResultTwo = (object->property("avatarTwo").isValid() == false);
+ // Because although only avatarTwo was explicitly released,
+ // avatarOne and avatarTwo were referencing the same
+ // scarce resource.
+ delete object;
//![5]
+ Q_ASSERT(expectedResultOne);
+ Q_ASSERT(expectedResultTwo);
+ }
+};
+
+int main(int argc, char *argv[])
+{
+ QGuiApplication app(argc, argv);
+ Expectations expectations;
+ expectations.expectOne();
+ expectations.expectTwo();
+ expectations.expectThree();
+ expectations.expectFour();
+ expectations.expectFive();
}