Package org.apache.click.extras.tree

Examples of org.apache.click.extras.tree.TreeNode

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        String expandId = getContext().getRequestParameter(Tree.EXPAND_TREE_NODE_PARAM);
        if(selectId == null && expandId == null) {
            return;
        }

        TreeNode node = null;
        if(selectId != null) {
            node = tree.find(selectId);
        } else {
            node = tree.find(expandId);
        }
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        tree = createTree();

        //Try and load the already stored nodes from the session.
        //If this is the first time we access the page, this method
        //will return null, indicating no nodes is stored.
        TreeNode existingRootNode = loadNodesFromSession();

        if(existingRootNode != null) {
            //OK we had already nodes stored in the session, so no need
            //to rebuild them. We attach the root node and return.
            tree.setRootNode(existingRootNode);

            //By default root node is not displayed in browser. Here we expand it,
            //so that the root's children are visible.
            tree.expand(existingRootNode);
            return tree;
        }

        TreeNode root = createNodes();

        //Attach the root node containing all the other nodes to the tree
        tree.setRootNode(root);

        //By default root node is not displayed in browser. Here we expand it,
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        //Create a node representing the root directory with the specified
        //parameter as the value. Because an id is not specified, a random
        //one will be generated by the node. By default the root node is
        //not rendered by the tree. This can be changed by calling
        //tree.setRootNodeDisplayed(true).
        TreeNode root = new TreeNode("c:");

        //Create a new directory, setting the root directory as its parent. Here
        //we do specify a id as the 2nd argument, so no id is generated.
        TreeNode dev = new TreeNode("dev","1", root);

        //The follwing 2 nodes represent files in the directory, setting the
        //dev node as their parent. Note the false argument to the constructor.
        //This means that the specific node does not support child nodes, and
        //it will be rendered as a leaf icon. If children are supported (the
        //default value) then even  if the node is a leaf, it will still be rendered
        //as a collapsed icon. In the example a default leaf node will be
        //rendered as a directory, and a node that does not support children is
        //rendered as a file.
        new TreeNode("java.pdf", "2", dev, false);
        new TreeNode("ruby.pdf", "3", dev, false);

        //We continue constructing the rest of the tree
        TreeNode programFiles = new TreeNode("program files", "4", root);
        new TreeNode("Adobe", "5", programFiles);

        TreeNode download = new TreeNode("downloads","6", root);

        TreeNode web = new TreeNode("web", "7", download);
        new TreeNode("html.pdf", "8", web, false);
        new TreeNode("css.html", "9", web, false);

        TreeNode databases = new TreeNode("databases", "10", download);
        TreeNode relationalDb = new TreeNode("relational", "11", databases);

        new TreeNode("mysql.html","13", relationalDb, false);
        new TreeNode("oracle.pdf","14", relationalDb, false);
        new TreeNode("postgres","15", relationalDb, false);

        TreeNode objectDb = new TreeNode("object", "12", databases);
        new TreeNode("db4o.html","16", objectDb, false);

        return root;
    }
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        tree = createTree();

        //Try and load the already stored nodes from the session.
        //If this is the first time we access the page, this method
        //will return null, indicating no nodes is stored.
        TreeNode existingRootNode = loadNodesFromSession();

        if(existingRootNode != null) {
            //OK we had already nodes stored in the session, so no need
            //to rebuild them. We attach the root node and return.
            tree.setRootNode(existingRootNode);

            return tree;
        }

        //Create a node representing the root directory with the specified
        //parameter as the value. Because an id is not specified, a random
        //one will be generated by the node. By default the root node is
        //not rendered by the tree. This can be changed by calling
        //tree.setRootNodeDisplayed(true).
        TreeNode root = new TreeNode("c:");

        //Create a new directory, setting the root directory as its parent. Here
        //we do specify a id as the 2nd argument, so no id is generated.
        TreeNode dev = new TreeNode("dev","1", root);

        //The follwing 2 nodes represent files in the directory, setting the
        //dev node as their parent. Note the false argument to the constructor.
        //This means that the specific node does not support child nodes, and
        //it will be rendered as a leaf icon. If children are supported (the
        //default value) then even  if the node is a leaf, it will still be rendered
        //as a collapsed icon. In the example a default leaf node will be
        //rendered as a directory, and a node that does not support children is
        //rendered as a file.
        new TreeNode("java.pdf", "2", dev, false);
        new TreeNode("ruby.pdf", "3", dev, false);

        //We continue constructing the rest of the tree
        TreeNode programFiles = new TreeNode("program files", "4", root);
        new TreeNode("Adobe", "5", programFiles);

        TreeNode download = new TreeNode("downloads","6", root);

        TreeNode web = new TreeNode("web", "7", download);
        new TreeNode("html.pdf", "8", web, false);
        new TreeNode("css.html", "9", web, false);

        TreeNode databases = new TreeNode("databases", "10", download);
        new TreeNode("mysql.html","11",databases, false);
        new TreeNode("oracle.pdf","12",databases, false);
        new TreeNode("postgres","13",databases, false);

        //Attach the root node containing all the other nodes to the tree
        tree.setRootNode(root);

        //By default root node is not displayed in browser. Here we expand it,
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        String expandId = getContext().getRequestParameter(Tree.EXPAND_TREE_NODE_PARAM);
        if(selectId == null && expandId == null) {
            return;
        }

        TreeNode node = null;
        if(selectId != null) {
            node = tree.find(selectId);
        } else {
            node = tree.find(expandId);
        }
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        tree = createTree();

        //Try and load the already stored nodes from the session.
        //If this is the first time we access the page, this method
        //will return null, indicating no nodes is stored.
        TreeNode existingRootNode = loadNodesFromSession();

        if(existingRootNode != null) {
            //OK we had already nodes stored in the session, so no need
            //to rebuild them. We attach the root node and return.
            tree.setRootNode(existingRootNode);

            //By default root node is not displayed in browser. Here we expand it,
            //so that the root's children are visible.
            tree.expand(existingRootNode);
            return tree;
        }

        TreeNode root = createNodes();

        //Attach the root node containing all the other nodes to the tree
        tree.setRootNode(root);

        //By default root node is not displayed in browser. Here we expand it,
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        //Create a node representing the root directory with the specified
        //parameter as the value. Because an id is not specified, a random
        //one will be generated by the node. By default the root node is
        //not rendered by the tree. This can be changed by calling
        //tree.setRootNodeDisplayed(true).
        TreeNode root = new TreeNode("c:");

        //Create a new directory, setting the root directory as its parent. Here
        //we do specify a id as the 2nd argument, so no id is generated.
        TreeNode dev = new TreeNode("dev","1", root);

        //The follwing 2 nodes represent files in the directory, setting the
        //dev node as their parent. Note the false argument to the constructor.
        //This means that the specific node does not support child nodes, and
        //it will be rendered as a leaf icon. If children are supported (the
        //default value) then even  if the node is a leaf, it will still be rendered
        //as a collapsed icon. In the example a default leaf node will be
        //rendered as a directory, and a node that does not support children is
        //rendered as a file.
        new TreeNode("java.pdf", "2", dev, false);
        new TreeNode("ruby.pdf", "3", dev, false);

        //We continue constructing the rest of the tree
        TreeNode programFiles = new TreeNode("program files", "4", root);
        new TreeNode("Adobe", "5", programFiles);

        TreeNode download = new TreeNode("downloads","6", root);

        TreeNode web = new TreeNode("web", "7", download);
        new TreeNode("html.pdf", "8", web, false);
        new TreeNode("css.html", "9", web, false);

        TreeNode databases = new TreeNode("databases", "10", download);
        TreeNode relationalDb = new TreeNode("relational", "11", databases);

        new TreeNode("mysql.html","13", relationalDb, false);
        new TreeNode("oracle.pdf","14", relationalDb, false);
        new TreeNode("postgres","15", relationalDb, false);

        TreeNode objectDb = new TreeNode("object", "12", databases);
        new TreeNode("db4o.html","16", objectDb, false);

        return root;
    }
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        tree = createTree();

        //Try and load the already stored nodes from the session.
        //If this is the first time we access the page, this method
        //will return null, indicating no nodes is stored.
        TreeNode existingRootNode = loadNodesFromSession();

        if(existingRootNode != null) {
            //OK we had already nodes stored in the session, so no need
            //to rebuild them. We attach the root node and return.
            tree.setRootNode(existingRootNode);

            return tree;
        }

        //Create a node representing the root directory with the specified
        //parameter as the value. Because an id is not specified, a random
        //one will be generated by the node. By default the root node is
        //not rendered by the tree. This can be changed by calling
        //tree.setRootNodeDisplayed(true).
        TreeNode root = new TreeNode("c:");

        //Create a new directory, setting the root directory as its parent. Here
        //we do specify a id as the 2nd argument, so no id is generated.
        TreeNode dev = new TreeNode("dev","1", root);

        //The follwing 2 nodes represent files in the directory, setting the
        //dev node as their parent. Note the false argument to the constructor.
        //This means that the specific node does not support child nodes, and
        //it will be rendered as a leaf icon. If children are supported (the
        //default value) then even  if the node is a leaf, it will still be rendered
        //as a collapsed icon. In the example a default leaf node will be
        //rendered as a directory, and a node that does not support children is
        //rendered as a file.
        new TreeNode("java.pdf", "2", dev, false);
        new TreeNode("ruby.pdf", "3", dev, false);

        //We continue constructing the rest of the tree
        TreeNode programFiles = new TreeNode("program files", "4", root);
        new TreeNode("Adobe", "5", programFiles);

        TreeNode download = new TreeNode("downloads","6", root);

        TreeNode web = new TreeNode("web", "7", download);
        new TreeNode("html.pdf", "8", web, false);
        new TreeNode("css.html", "9", web, false);

        TreeNode databases = new TreeNode("databases", "10", download);
        new TreeNode("mysql.html","11",databases, false);
        new TreeNode("oracle.pdf","12",databases, false);
        new TreeNode("postgres","13",databases, false);

        //Attach the root node containing all the other nodes to the tree
        tree.setRootNode(root);

        //By default root node is not displayed in browser. Here we expand it,
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        tree = createTree();

        //Try and load the already stored nodes from the session.
        //If this is the first time we access the page, this method
        //will return null, indicating no nodes is stored.
        TreeNode existingRootNode = loadNodesFromSession();

        if(existingRootNode != null) {
            //OK we had already nodes stored in the session, so no need
            //to rebuild them. We attach the root node and return.
            tree.setRootNode(existingRootNode);

            return tree;
        }

        //Create a node representing the root directory with the specified
        //parameter as the value. Because an id is not specified, a random
        //one will be generated by the node. By default the root node is
        //not rendered by the tree. This can be changed by calling
        //tree.setRootNodeDisplayed(true).
        TreeNode root = new TreeNode("c:");

        //Create a new directory, setting the root directory as its parent. Here
        //we do specify a id as the 2nd argument, so no id is generated.
        TreeNode dev = new TreeNode("dev","1", root);

        //The follwing 2 nodes represent files in the directory, setting the
        //dev node as their parent. Note the false argument to the constructor.
        //This means that the specific node does not support child nodes, and
        //it will be rendered as a leaf icon. If children are supported (the
        //default value) then even  if the node is a leaf, it will still be rendered
        //as a collapsed icon. In the example a default leaf node will be
        //rendered as a directory, and a node that does not support children is
        //rendered as a file.
        new TreeNode("java.pdf", "2", dev, false);
        new TreeNode("ruby.pdf", "3", dev, false);

        //We continue constructing the rest of the tree
        TreeNode programFiles = new TreeNode("program files", "4", root);
        new TreeNode("Adobe", "5", programFiles);

        TreeNode download = new TreeNode("downloads","6", root);

        TreeNode web = new TreeNode("web", "7", download);
        new TreeNode("html.pdf", "8", web, false);
        new TreeNode("css.html", "9", web, false);

        TreeNode databases = new TreeNode("databases", "10", download);
        new TreeNode("mysql.html","11",databases, false);
        new TreeNode("oracle.pdf","12",databases, false);
        new TreeNode("postgres","13",databases, false);

        //Attach the root node containing all the other nodes to the tree
        tree.setRootNode(root);

        //By default root node is not displayed in browser. Here we expand it,
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        //Create a node representing the root directory with the specified
        //parameter as the value. Because an id is not specified, a random
        //one will be generated by the node. By default the root node is
        //not rendered by the tree. This can be changed by calling
        //tree.setRootNodeDisplayed(true).
        TreeNode root = new TreeNode("Pages");

        //Create a new directory, setting the root directory as its parent. Here
        //we do specify a id as the 2nd argument, so no id is generated.
        TreeNode general = new TreeNode("Intro", "1", root);

        boolean supportsChildNodes = false;

        new TreeNode(HelloWorld.class, "1.1", general, supportsChildNodes);
        new TreeNode(ControlListenerType1Page.class, "1.2", general, supportsChildNodes);
        new TreeNode(ControlListenerType2Page.class, "1.3", general, supportsChildNodes);

        TreeNode forms = new TreeNode("Forms", "2", root);
        new TreeNode(SimpleForm.class, "2.1", forms, supportsChildNodes);
        new TreeNode(AdvancedForm.class, "2.2", forms, supportsChildNodes);

        TreeNode tables = new TreeNode("Tables", "3", root);
        new TreeNode(SimpleTable.class, "3.1", tables, supportsChildNodes);
        new TreeNode(AdvancedTable.class, "3.2", tables, supportsChildNodes);

        return root;
    }
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