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package org.eclipse.jface.viewers; |
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package org.eclipse.jface.viewers; |
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import java.util.LinkedList; |
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import org.eclipse.core.runtime.Assert; |
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import org.eclipse.swt.graphics.Color; |
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import org.eclipse.swt.graphics.Color; |
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import org.eclipse.swt.graphics.Font; |
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import org.eclipse.swt.graphics.Font; |
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import org.eclipse.swt.graphics.Image; |
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import org.eclipse.swt.graphics.Image; |
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import org.eclipse.swt.widgets.TreeItem; |
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/** |
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/** |
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* The WrappedViewerLabelProvider is a label provider that |
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* The WrappedViewerLabelProvider is a label provider that |
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private IFontProvider fontProvider; |
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private IFontProvider fontProvider; |
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private IViewerLabelProvider viewerLabelProvider; |
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private ITreePathLabelProvider treePathLabelProvider; |
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/** |
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/** |
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* Create a new instance of the receiver based on labelProvider. |
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* Create a new instance of the receiver based on labelProvider. |
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* |
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* |
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Lines 50-55
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* {@link Object} |
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* {@link Object} |
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*/ |
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*/ |
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public void setProviders(Object provider) { |
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public void setProviders(Object provider) { |
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if (provider instanceof ITreePathLabelProvider) |
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treePathLabelProvider = ((ITreePathLabelProvider) provider); |
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if (provider instanceof IViewerLabelProvider) |
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viewerLabelProvider = ((IViewerLabelProvider) provider); |
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if (provider instanceof ILabelProvider) |
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if (provider instanceof ILabelProvider) |
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labelProvider = ((ILabelProvider) provider); |
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labelProvider = ((ILabelProvider) provider); |
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IFontProvider getFontProvider() { |
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IFontProvider getFontProvider() { |
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return fontProvider; |
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return fontProvider; |
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} |
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} |
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public void update(ViewerCell cell) { |
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if (viewerLabelProvider != null) { |
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ViewerLabel label = new ViewerLabel(cell.getText(), cell.getImage()); |
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viewerLabelProvider.updateLabel(label, cell.getElement()); |
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applyViewerLabel(cell, label); |
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} else if (treePathLabelProvider != null && cell.getItem() instanceof TreeItem) { |
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ViewerLabel label = new ViewerLabel(cell.getText(), cell.getImage()); |
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TreePath treePath; |
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{ |
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// inlined copy of AbstractTreeViewer.getTreePathFromItem |
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TreeItem item = (TreeItem) cell.getItem(); |
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LinkedList segments = new LinkedList(); |
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while (item != null) { |
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Object segment = item.getData(); |
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Assert.isNotNull(segment); |
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segments.addFirst(segment); |
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item = item.getParentItem(); |
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} |
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treePath = new TreePath(segments.toArray()); |
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} |
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treePathLabelProvider.updateLabel(label, treePath); |
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applyViewerLabel(cell, label); |
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} else { |
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super.update(cell); |
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} |
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} |
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private void applyViewerLabel(ViewerCell cell, ViewerLabel label) { |
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if (label.hasNewText()) { |
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cell.setText(label.getText()); |
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} |
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if (label.hasNewImage()) { |
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cell.setImage(label.getImage()); |
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} |
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if (label.hasNewBackground()) { |
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cell.setBackground(label.getBackground()); |
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} |
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if (label.hasNewForeground()) { |
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cell.setBackground(label.getForeground()); |
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} |
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if (label.hasNewFont()) { |
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cell.setFont(label.getFont()); |
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} |
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} |
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} |
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} |
