Example usage for javax.swing.tree AbstractLayoutCache getRowHeight

Introduction

In this page you can find the example usage for javax.swing.tree AbstractLayoutCache getRowHeight.

Prototype

public int getRowHeight() 

Source Link

Document

Returns the height of each row.

Usage

From source file:ca.uhn.hl7v2.testpanel.ui.v2tree.Hl7V2MessageTree.java

private void doSynchronizeTreeWithHighlitedPath() {
    String highlitedPath = myMessages.getHighlitedPath();
    if (highlitedPath == null) {
        return;// w w  w. j a v  a  2 s. c  o m
    }

    final AbstractLayoutCache layout = ((OutlineModel) getModel()).getLayout();
    int lastSegmentRow = -1;
    int currentSegmentRow = -1;
    int currentSelectedRow = -1;
    int currentMessageIndex = -1;
    for (int row = 0; row < layout.getRowCount(); row++) {

        TreePath path = layout.getPathForRow(row);
        Object component = path.getLastPathComponent();
        if (component instanceof TreeNodeMessage) {
            currentMessageIndex = ((TreeNodeMessage) component).getMessageIndex();
            if (highlitedPath.startsWith(currentMessageIndex + "/")) {
                expandPath(path);
            } else {
                // collapsePath(path);
            }
            continue;
        }

        if (component instanceof TreeNodeUnknown) {
            continue;
        }

        if (component instanceof TreeNodeSegment) {
            lastSegmentRow = row;
        }

        TreeNodeBase node = (TreeNodeBase) component;

        String terserPath = (currentMessageIndex) + node.getTerserPath();
        if (highlitedPath != null && highlitedPath.startsWith(terserPath)
                && !highlitedPath.startsWith(terserPath + "(")) {
            expandPath(path);
            if (highlitedPath.equals(terserPath)) {
                currentSelectedRow = row;
                getSelectionModel().setSelectionInterval(row, row);
                currentSegmentRow = lastSegmentRow;
            }
        } else {
            // collapsePath(path);
        }

    }

    // Adjust the tree scrollpane's scroll position so that the newly
    // selected row is visible
    if (currentSegmentRow != -1 && currentSelectedRow != -1 && !myRespondingToManualRangeChange) {
        JViewport viewPort = (JViewport) getParent();
        final JScrollPane scrollPane = (JScrollPane) viewPort.getParent();

        int tableHeaderHeight = getTableHeader().getHeight();

        int numRowsVisible = ((scrollPane.getHeight() - tableHeaderHeight) / layout.getRowHeight()) - 1;
        int segmentDelta = currentSelectedRow - currentSegmentRow;
        if (segmentDelta > numRowsVisible) {
            currentSegmentRow = currentSegmentRow + (segmentDelta - numRowsVisible);
        }

        final int scrollToRow = currentSegmentRow;
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                scrollPane.getVerticalScrollBar().setValue(layout.getRowHeight() * scrollToRow);
            }
        });

    }
}

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