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author | Johannes Dahlström <johannesd@vaadin.com> | 2012-06-15 11:18:46 +0300 |
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committer | Johannes Dahlström <johannesd@vaadin.com> | 2012-06-15 11:18:46 +0300 |
commit | 37a934c2f0c0a8edb7c580ff3a5b351778256368 (patch) | |
tree | 392a2a7a172c79ab2005f38359853a0e209b5387 /src/com/vaadin/terminal/JavaScriptCallbackHelper.java | |
parent | 024b0a0043748d77e73a06cd7743d58d5412c5b0 (diff) | |
parent | 1e46f3fcb5f801c6b8349a4fc5b2e6702a128b6e (diff) | |
download | vaadin-framework-37a934c2f0c0a8edb7c580ff3a5b351778256368.tar.gz vaadin-framework-37a934c2f0c0a8edb7c580ff3a5b351778256368.zip |
Merge remote-tracking branch 'origin/master'
Conflicts:
src/com/vaadin/terminal/gwt/server/DragAndDropService.java
Diffstat (limited to 'src/com/vaadin/terminal/JavaScriptCallbackHelper.java')
-rw-r--r-- | src/com/vaadin/terminal/JavaScriptCallbackHelper.java | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/src/com/vaadin/terminal/JavaScriptCallbackHelper.java b/src/com/vaadin/terminal/JavaScriptCallbackHelper.java new file mode 100644 index 0000000000..2da64d7b10 --- /dev/null +++ b/src/com/vaadin/terminal/JavaScriptCallbackHelper.java @@ -0,0 +1,101 @@ +/* +@VaadinApache2LicenseForJavaFiles@ + */ + +package com.vaadin.terminal; + +import java.io.Serializable; +import java.lang.reflect.Method; +import java.util.Arrays; +import java.util.HashMap; +import java.util.HashSet; +import java.util.Map; +import java.util.Set; + +import com.vaadin.external.json.JSONArray; +import com.vaadin.external.json.JSONException; +import com.vaadin.terminal.gwt.client.JavaScriptConnectorHelper.JavaScriptConnectorState; +import com.vaadin.tools.ReflectTools; +import com.vaadin.ui.JavaScript.JavaScriptCallbackRpc; +import com.vaadin.ui.JavaScriptCallback; + +public class JavaScriptCallbackHelper implements Serializable { + + private static final Method CALL_METHOD = ReflectTools.findMethod( + JavaScriptCallbackRpc.class, "call", String.class, JSONArray.class); + private AbstractClientConnector connector; + + private Map<String, JavaScriptCallback> callbacks = new HashMap<String, JavaScriptCallback>(); + private JavaScriptCallbackRpc javascriptCallbackRpc; + + public JavaScriptCallbackHelper(AbstractClientConnector connector) { + this.connector = connector; + } + + public void registerCallback(String functionName, + JavaScriptCallback javaScriptCallback) { + callbacks.put(functionName, javaScriptCallback); + JavaScriptConnectorState state = getConnectorState(); + if (state.getCallbackNames().add(functionName)) { + connector.requestRepaint(); + } + ensureRpc(); + } + + private JavaScriptConnectorState getConnectorState() { + JavaScriptConnectorState state = (JavaScriptConnectorState) connector + .getState(); + return state; + } + + private void ensureRpc() { + if (javascriptCallbackRpc == null) { + javascriptCallbackRpc = new JavaScriptCallbackRpc() { + public void call(String name, JSONArray arguments) { + JavaScriptCallback callback = callbacks.get(name); + try { + callback.call(arguments); + } catch (JSONException e) { + throw new IllegalArgumentException(e); + } + } + }; + connector.registerRpc(javascriptCallbackRpc); + } + } + + public void invokeCallback(String name, Object... arguments) { + if (callbacks.containsKey(name)) { + throw new IllegalStateException( + "Can't call callback " + + name + + " on the client because a callback with the same name is registered on the server."); + } + JSONArray args = new JSONArray(Arrays.asList(arguments)); + connector.addMethodInvocationToQueue( + JavaScriptCallbackRpc.class.getName(), CALL_METHOD, + new Object[] { name, args }); + connector.requestRepaint(); + } + + public void registerRpc(Class<?> rpcInterfaceType) { + if (rpcInterfaceType == JavaScriptCallbackRpc.class) { + // Ignore + return; + } + Map<String, Set<String>> rpcInterfaces = getConnectorState() + .getRpcInterfaces(); + String interfaceName = rpcInterfaceType.getName(); + if (!rpcInterfaces.containsKey(interfaceName)) { + Set<String> methodNames = new HashSet<String>(); + + for (Method method : rpcInterfaceType.getMethods()) { + methodNames.add(method.getName()); + } + + rpcInterfaces.put(interfaceName, methodNames); + connector.requestRepaint(); + } + } + +} |