Examples of pivot.wtk.TreeView$TreeViewNodeListenerList

pivot.wtk.TreeView
Tree view node listener list. @author tvolkert

    @Override
    public boolean mouseDown(Component component, Mouse.Button button, int x, int y) {
        boolean consumed = super.mouseDown(component, button, x, y);


        if (!consumed) {
            TreeView treeView = (TreeView)getComponent();
            NodeInfo nodeInfo = getNodeInfoAt(y);


            if (nodeInfo != null
                && !nodeInfo.isDisabled()) {
                int nodeHeight = getNodeHeight();
                int baseNodeX = (nodeInfo.depth - 1) * (indent + spacing);


                int nodeX = baseNodeX + (showBranchControls ? indent + spacing : 0);
                int nodeY = (y / (nodeHeight + VERTICAL_SPACING)) * (nodeHeight + VERTICAL_SPACING);


                int checkboxWidth = CHECKBOX.getWidth();
                int checkboxHeight = CHECKBOX.getHeight();


                int checkboxX = Math.max(indent - checkboxWidth, 0) / 2;
                int checkboxY = (nodeHeight - checkboxHeight) / 2;


                // Only proceed if the user DIDN'T click on a checkbox
                if (!treeView.getCheckmarksEnabled()
                    || x < nodeX + checkboxX
                    || x >= nodeX + checkboxX + checkboxWidth
                    || y < nodeY + checkboxY
                    || y >= nodeY + checkboxY + checkboxHeight) {
                    Path path = nodeInfo.getPath();


                    // See if the user clicked on an expand/collapse control of
                    // a branch. If so, expand/collapse the branch
                    if (showBranchControls
                        && nodeInfo instanceof BranchInfo
                        && x >= baseNodeX
                        && x < baseNodeX + indent) {
                        BranchInfo branchInfo = (BranchInfo)nodeInfo;


                        treeView.setBranchExpanded(path, !branchInfo.isExpanded());
                        consumed = true;
                    }


                    // If we haven't consumed the event, then proceed to manage
                    // the selection state of the node
                    if (!consumed) {
                        TreeView.SelectMode selectMode = treeView.getSelectMode();


                        if (selectMode == TreeView.SelectMode.SINGLE) {
                            if (nodeInfo.isSelected()
                                && treeView.isFocused()) {
                                // Edit the node
                                editNode = nodeInfo;
                            } else {
                                // Select the node
                                treeView.setSelectedPath(path);
                            }
                        } else if (selectMode == TreeView.SelectMode.MULTI) {
                            if (Keyboard.isPressed(Keyboard.Modifier.CTRL)) {
                                if (nodeInfo.isSelected()) {
                                    treeView.removeSelectedPath(path);
                                } else {
                                    treeView.addSelectedPath(path);
                                }
                            } else {
                                // Replace the selection
                                treeView.setSelectedPath(path);
                            }
                        }
                    }
                }
            }


            if (treeView.isFocusable()) {
                treeView.requestFocus();
            }
        }


        return consumed;
    }

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    @Override
    public boolean mouseClick(Component component, Mouse.Button button, int x, int y, int count) {
        boolean consumed = super.mouseClick(component, button, x, y, count);


        if (!consumed) {
            TreeView treeView = (TreeView)getComponent();


            NodeInfo nodeInfo = getNodeInfoAt(y);


            if (nodeInfo != null
                && !nodeInfo.isDisabled()) {
                int nodeHeight = getNodeHeight();
                int baseNodeX = (nodeInfo.depth - 1) * (indent + spacing);


                int nodeX = baseNodeX + (showBranchControls ? indent + spacing : 0);
                int nodeY = (y / (nodeHeight + VERTICAL_SPACING)) * (nodeHeight + VERTICAL_SPACING);


                int checkboxWidth = CHECKBOX.getWidth();
                int checkboxHeight = CHECKBOX.getHeight();


                int checkboxX = Math.max(indent - checkboxWidth, 0) / 2;
                int checkboxY = (nodeHeight - checkboxHeight) / 2;


                if (treeView.getCheckmarksEnabled()
                    && x >= nodeX + checkboxX
                    && x < nodeX + checkboxX + checkboxWidth
                    && y >= nodeY + checkboxY
                    && y < nodeY + checkboxY + checkboxHeight) {
                    Path path = nodeInfo.getPath();
                    treeView.setNodeChecked(path, !nodeInfo.isChecked());
                } else {
                    if (editNode != null
                        && count == 1) {
                        TreeView.NodeEditor nodeEditor = treeView.getNodeEditor();


                        if (nodeEditor != null) {
                            nodeEditor.edit(treeView, nodeInfo.getPath());
                        }
                    }

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    @Override
    public boolean keyPressed(Component component, int keyCode, Keyboard.KeyLocation keyLocation) {
        boolean consumed = false;


        TreeView treeView = (TreeView)getComponent();
        TreeView.SelectMode selectMode = treeView.getSelectMode();


        switch (keyCode) {
        case Keyboard.KeyCode.UP: {
            if (selectMode != TreeView.SelectMode.NONE) {
                Path firstSelectedPath = treeView.getFirstSelectedPath();


                int index;
                if (firstSelectedPath != null) {
                    NodeInfo previousSelectedNode = getNodeInfoAt(firstSelectedPath);
                    index = visibleNodes.indexOf(previousSelectedNode);
                } else {
                    // Select the last visible node
                    index = visibleNodes.getLength();
                }


                NodeInfo newSelectedNode = null;
                do {
                    newSelectedNode = (--index >= 0) ? visibleNodes.get(index) : null;
                } while (newSelectedNode != null
                    && newSelectedNode.isDisabled());


                if (newSelectedNode != null) {
                    treeView.setSelectedPath(newSelectedNode.getPath());
                    treeView.scrollAreaToVisible(getNodeBounds(newSelectedNode));
                    consumed = true;
                }
            }


            break;
        }


        case Keyboard.KeyCode.DOWN: {
            if (selectMode != TreeView.SelectMode.NONE) {
                Path lastSelectedPath = treeView.getLastSelectedPath();


                int index;
                if (lastSelectedPath != null) {
                    NodeInfo previousSelectedNode = getNodeInfoAt(lastSelectedPath);
                    index = visibleNodes.indexOf(previousSelectedNode);
                } else {
                    // Select the first visible node
                    index = -1;
                }


                NodeInfo newSelectedNode = null;
                int n = visibleNodes.getLength();
                do {
                    newSelectedNode = (++index <= n - 1) ? visibleNodes.get(index) : null;
                } while (newSelectedNode != null
                    && newSelectedNode.isDisabled());


                if (newSelectedNode != null) {
                    treeView.setSelectedPath(newSelectedNode.getPath());
                    treeView.scrollAreaToVisible(getNodeBounds(newSelectedNode));
                    consumed = true;
                }
            }


            break;
        }


        case Keyboard.KeyCode.LEFT: {
            if (showBranchControls) {
                Sequence<Path> paths = treeView.getSelectedPaths();


                if (paths != null) {
                    Path path = paths.get(paths.getLength() - 1);
                    NodeInfo nodeInfo = getNodeInfoAt(path);


                    if (nodeInfo instanceof BranchInfo) {
                        BranchInfo branchInfo = (BranchInfo)nodeInfo;


                        if (branchInfo.isExpanded()) {
                            treeView.collapseBranch(branchInfo.getPath());
                        }
                    }


                    consumed = true;
                }
            }


            break;
        }


        case Keyboard.KeyCode.RIGHT: {
            if (showBranchControls) {
                Sequence<Path> paths = treeView.getSelectedPaths();


                if (paths != null) {
                    Path path = paths.get(paths.getLength() - 1);
                    NodeInfo nodeInfo = getNodeInfoAt(path);


                    if (nodeInfo instanceof BranchInfo) {
                        BranchInfo branchInfo = (BranchInfo)nodeInfo;


                        if (!branchInfo.isExpanded()) {
                            treeView.expandBranch(branchInfo.getPath());
                        }
                    }


                    consumed = true;
                }

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    @Override
    public boolean keyReleased(Component component, int keyCode, Keyboard.KeyLocation keyLocation) {
        boolean consumed = false;


        TreeView treeView = (TreeView)getComponent();


        if (keyCode == Keyboard.KeyCode.SPACE) {
            if (treeView.getCheckmarksEnabled()
                && treeView.getSelectMode() == TreeView.SelectMode.SINGLE) {
                Path selectedPath = treeView.getSelectedPath();


                if (selectedPath != null) {
                    treeView.setNodeChecked(selectedPath, !treeView.isNodeChecked(selectedPath));
                }
            }
        } else {
            consumed = super.keyReleased(component, keyCode, keyLocation);
        }

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        return consumed;
    }


    @Override
    public boolean isFocusable() {
        TreeView treeView = (TreeView)getComponent();
        return (treeView.getSelectMode() != TreeView.SelectMode.NONE);
    }

View Full Code Here

        NodeInfo nodeInfo = getNodeInfoAt(path);
        return getNodeBounds(nodeInfo);
    }


    public int getNodeIndent(int depth) {
        TreeView treeView = (TreeView)getComponent();


        int nodeIndent = (depth - 1) * (indent + spacing);


        if (showBranchControls) {
            nodeIndent += indent + spacing;
        }


        if (treeView.getCheckmarksEnabled()) {
            nodeIndent += Math.max(CHECKBOX.getWidth(), indent) + spacing;
        }


        return nodeIndent;
    }

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