1 files changed, 44 insertions, 0 deletions
diff --git a/src/com/vaadin/navigator/ViewProvider.java b/src/com/vaadin/navigator/ViewProvider.java
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+++ b/src/com/vaadin/navigator/ViewProvider.java
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+/*
+@VaadinApache2LicenseForJavaFiles@
+ */
+
+package com.vaadin.navigator;
+
+import java.io.Serializable;
+
+/**
+ * A provider for view instances that can return pre-registered views or
+ * dynamically create new views.
+ * 
+ * If multiple providers are used, {@link #getViewName(String)} of each is
+ * called (in registration order) until one of them returns a non-null value.
+ * The {@link #getView(String)} method of that provider is then used.
+ * 
+ * @author Vaadin Ltd
+ * @since 7.0
+ */
+public interface ViewProvider extends Serializable {
+    /**
+     * Extract the view name from a combined view name and parameter string.
+     * This method should return a view name if and only if this provider
+     * handles creation of such views.
+     * 
+     * @param viewAndParameters
+     *            string with view name and its fragment parameters (if given),
+     *            not null
+     * @return view name if the view is handled by this provider, null otherwise
+     */
+    public String getViewName(String viewAndParameters);
+
+    /**
+     * Create or return a pre-created instance of a view.
+     * 
+     * The parameters for the view are set separately by the navigator when the
+     * view is activated.
+     * 
+     * @param viewName
+     *            name of the view, not null
+     * @return newly created view (null if none available for the view name)
+     */
+    public View getView(String viewName);
+}
+\ No newline at end of file