From: Artur Signell <artur@vaadin.com>
Date: Thu, 22 Dec 2011 21:52:15 +0000 (+0200)
Subject: Minitutorial applications
X-Git-Tag: 7.0.0.alpha1^2~4
X-Git-Url: https://source.dussan.org/?a=commitdiff_plain;h=0b1a5772265fa510bcda25b6193a0938f6ebcd97;p=vaadin-framework.git

Minitutorial applications
---

diff --git a/tests/testbench/com/vaadin/tests/minitutorials/CustomConverterFactoryRoot.java b/tests/testbench/com/vaadin/tests/minitutorials/CustomConverterFactoryRoot.java
new file mode 100644
index 0000000000..1e6e10c8d4
--- /dev/null
+++ b/tests/testbench/com/vaadin/tests/minitutorials/CustomConverterFactoryRoot.java
@@ -0,0 +1,33 @@
+package com.vaadin.tests.minitutorials;
+
+import com.vaadin.terminal.WrappedRequest;
+import com.vaadin.tests.components.AbstractTestRoot;
+import com.vaadin.ui.TextField;
+
+public class CustomConverterFactoryRoot extends AbstractTestRoot {
+    @Override
+    public void setup(WrappedRequest request) {
+        getApplication().setConverterFactory(new MyConverterFactory());
+
+        TextField tf = new TextField("This is my double field");
+        tf.setImmediate(true);
+        tf.setConverter(Double.class);
+        addComponent(tf);
+
+        // As we do not set the locale explicitly for the field we set the value
+        // after the field has been attached so it uses the application locale
+        // for conversion
+        tf.setConvertedValue(50.1);
+
+    }
+
+    @Override
+    protected String getTestDescription() {
+        return "Mini tutorial for https://vaadin.com/wiki/-/wiki/Main/Changing%20the%20default%20converters%20for%20an%20application";
+    }
+
+    @Override
+    protected Integer getTicketNumber() {
+        return null;
+    }
+}
diff --git a/tests/testbench/com/vaadin/tests/minitutorials/DynamicImageRoot.java b/tests/testbench/com/vaadin/tests/minitutorials/DynamicImageRoot.java
new file mode 100644
index 0000000000..a0e6a54c41
--- /dev/null
+++ b/tests/testbench/com/vaadin/tests/minitutorials/DynamicImageRoot.java
@@ -0,0 +1,79 @@
+package com.vaadin.tests.minitutorials;
+
+import java.awt.image.BufferedImage;
+import java.io.IOException;
+import java.net.MalformedURLException;
+import java.net.URL;
+
+import javax.imageio.ImageIO;
+
+import com.vaadin.Application;
+import com.vaadin.terminal.ExternalResource;
+import com.vaadin.terminal.RequestHandler;
+import com.vaadin.terminal.WrappedRequest;
+import com.vaadin.terminal.WrappedResponse;
+import com.vaadin.tests.components.AbstractTestRoot;
+import com.vaadin.ui.Embedded;
+
+public class DynamicImageRoot extends AbstractTestRoot {
+
+    @Override
+    public void setup(WrappedRequest request) {
+        // Add the request handler that handles our dynamic image
+        getApplication().addRequestHandler(new DynamicImageRequestHandler());
+
+        // Create a URL that we can handle in DynamicImageRequestHandler
+        URL imageUrl;
+        try {
+            imageUrl = new URL(getApplication().getURL(),
+                    DynamicImageRequestHandler.IMAGE_URL + "?text=Hello!");
+        } catch (MalformedURLException e) {
+            // This should never happen
+            throw new RuntimeException(e);
+        }
+
+        // Add an embedded using the created URL
+        Embedded embedded = new Embedded("A dynamically generated image",
+                new ExternalResource(imageUrl));
+        embedded.setType(Embedded.TYPE_IMAGE);
+        getContent().addComponent(embedded);
+
+    }
+
+    @Override
+    protected String getTestDescription() {
+        return "Mini tutorial for https://vaadin.com/wiki/-/wiki/Main/Generating%20dynamic%20resources%20based%20on%20URI%20or%20parameters";
+    }
+
+    @Override
+    protected Integer getTicketNumber() {
+        return null;
+    }
+}
+
+class DynamicImageRequestHandler implements RequestHandler {
+
+    public static final String IMAGE_URL = "myimage.png";
+
+    public boolean handleRequest(Application application,
+            WrappedRequest request, WrappedResponse response)
+            throws IOException {
+        String pathInfo = request.getRequestPathInfo();
+        if (("/" + IMAGE_URL).equals(pathInfo)) {
+            // Create an image, draw the "text" parameter to it and output it to
+            // the browser.
+            String text = request.getParameter("text");
+            BufferedImage bi = new BufferedImage(100, 30,
+                    BufferedImage.TYPE_3BYTE_BGR);
+            bi.getGraphics().drawChars(text.toCharArray(), 0, text.length(),
+                    10, 20);
+            response.setContentType("image/png");
+            ImageIO.write(bi, "png", response.getOutputStream());
+
+            return true;
+        }
+        // If the URL did not match our image URL, let the other request
+        // handlers handle it
+        return false;
+    }
+}
diff --git a/tests/testbench/com/vaadin/tests/minitutorials/MyConverterFactory.java b/tests/testbench/com/vaadin/tests/minitutorials/MyConverterFactory.java
new file mode 100644
index 0000000000..0c346bfb50
--- /dev/null
+++ b/tests/testbench/com/vaadin/tests/minitutorials/MyConverterFactory.java
@@ -0,0 +1,17 @@
+package com.vaadin.tests.minitutorials;
+
+import com.vaadin.data.util.converter.Converter;
+import com.vaadin.data.util.converter.DefaultConverterFactory;
+
+public class MyConverterFactory extends DefaultConverterFactory {
+    @Override
+    protected <PRESENTATION, MODEL> Converter<PRESENTATION, MODEL> findConverter(
+            Class<PRESENTATION> presentationType, Class<MODEL> modelType) {
+        // Handle String <-> Double
+        if (presentationType == String.class && modelType == Double.class) {
+            return (Converter<PRESENTATION, MODEL>) new MyStringToDoubleConverter();
+        }
+        // Let default factory handle the rest
+        return super.findConverter(presentationType, modelType);
+    }
+}
diff --git a/tests/testbench/com/vaadin/tests/minitutorials/MyStringToDoubleConverter.java b/tests/testbench/com/vaadin/tests/minitutorials/MyStringToDoubleConverter.java
new file mode 100644
index 0000000000..77fddc7684
--- /dev/null
+++ b/tests/testbench/com/vaadin/tests/minitutorials/MyStringToDoubleConverter.java
@@ -0,0 +1,18 @@
+package com.vaadin.tests.minitutorials;
+
+import java.text.NumberFormat;
+import java.util.Locale;
+
+import com.vaadin.data.util.converter.StringToDoubleConverter;
+
+public class MyStringToDoubleConverter extends StringToDoubleConverter {
+
+    @Override
+    protected NumberFormat getFormat(Locale locale) {
+        NumberFormat format = super.getFormat(locale);
+        format.setGroupingUsed(false);
+        format.setMaximumFractionDigits(3);
+        format.setMinimumFractionDigits(3);
+        return format;
+    }
+}