de.walware.docmlet.tex.ui.TexLabelProvider.java Source code

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Here is the source code for de.walware.docmlet.tex.ui.TexLabelProvider.java

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/*=============================================================================#
 # Copyright (c) 2009-2015 Stephan Wahlbrink (WalWare.de) and others.
 # All rights reserved. This program and the accompanying materials
 # are made available under the terms of the Eclipse Public License v1.0
 # which accompanies this distribution, and is available at
 # http://www.eclipse.org/legal/epl-v10.html
 # 
 # Contributors:
 #     Stephan Wahlbrink - initial API and implementation
 #=============================================================================*/

package de.walware.docmlet.tex.ui;

import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.viewers.StyledCellLabelProvider;
import org.eclipse.jface.viewers.StyledString;
import org.eclipse.jface.viewers.ViewerCell;
import org.eclipse.swt.graphics.Image;

import de.walware.ecommons.ltk.IModelElement;
import de.walware.ecommons.ltk.ui.IElementLabelProvider;

import de.walware.docmlet.tex.core.commands.TexCommand;
import de.walware.docmlet.tex.core.model.ILtxSourceElement;
import de.walware.docmlet.tex.core.model.TexLabelAccess;

public class TexLabelProvider extends StyledCellLabelProvider implements IElementLabelProvider, ILabelProvider {

    private TexUIResources texResources;

    public TexLabelProvider() {
        texResources = TexUIResources.INSTANCE;
    }

    @Override
    public void dispose() {
        super.dispose();
        texResources = null;
    }

    @Override
    public Image getImage(final Object element) {
        if (element instanceof IModelElement) {
            return getImage((IModelElement) element);
        }
        if (element instanceof TexLabelAccess) {
            return getImage((TexLabelAccess) element);
        }
        return null;
    }

    @Override
    public Image getImage(final IModelElement element) {
        switch (element.getElementType() & IModelElement.MASK_C3) {
        case ILtxSourceElement.C2_PREAMBLE:
            return texResources.getImage(TexUIResources.OBJ_PREAMBLE_IMAGE_ID);
        case ILtxSourceElement.C2_SECTIONING + TexCommand.PART_LEVEL:
            return texResources.getImage(TexUIResources.OBJ_PART_IMAGE_ID);
        case ILtxSourceElement.C2_SECTIONING + TexCommand.CHAPTER_LEVEL:
            return texResources.getImage(TexUIResources.OBJ_CHAPTER_IMAGE_ID);
        case ILtxSourceElement.C2_SECTIONING + TexCommand.SECTION_LEVEL:
            return texResources.getImage(TexUIResources.OBJ_SECTION_IMAGE_ID);
        case ILtxSourceElement.C2_SECTIONING + TexCommand.SUBSECTION_LEVEL:
            return texResources.getImage(TexUIResources.OBJ_SUBSECTION_IMAGE_ID);
        case ILtxSourceElement.C2_SECTIONING + TexCommand.SUBSUBSECTION_LEVEL:
            return texResources.getImage(TexUIResources.OBJ_SUBSUBSECTION_IMAGE_ID);
        default:
            return null;
        }
    }

    public Image getImage(final TexLabelAccess access) {
        if (access.getType() == TexLabelAccess.LABEL) {
            return texResources.getImage(TexUIResources.OBJ_LABEL_IMAGE_ID);
        }
        return null;
    }

    @Override
    public String getText(final Object element) {
        if (element instanceof IModelElement) {
            return getText((IModelElement) element);
        }
        if (element instanceof TexLabelAccess) {
            return getText((TexLabelAccess) element);
        }
        return null;
    }

    @Override
    public String getText(final IModelElement element) {
        return element.getElementName().getDisplayName();
    }

    public String getText(final TexLabelAccess access) {
        return access.getDisplayName();
    }

    @Override
    public StyledString getStyledText(final IModelElement element) {
        return new StyledString(element.getElementName().getDisplayName());
    }

    @Override
    public void update(final ViewerCell cell) {
        final Object cellElement = cell.getElement();
        if (cellElement instanceof IModelElement) {
            final IModelElement element = (IModelElement) cellElement;
            cell.setImage(getImage(element));
            final StyledString styledText = getStyledText(element);
            cell.setText(styledText.getString());
            cell.setStyleRanges(styledText.getStyleRanges());
            super.update(cell);
        } else {
            cell.setImage(null);
            cell.setText(cellElement.toString());
            cell.setStyleRanges(null);
            super.update(cell);
        }
    }

}