svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.plugin / org.gvsig.app / org.gvsig.app.mainplugin / src / main / java / org / gvsig / app / extension / ZoomPrev.java @ 47784
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/**
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* gvSIG. Desktop Geographic Information System.
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*
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* Copyright (C) 2007-2013 gvSIG Association.
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*
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* This program is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License as published by the Free Software
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* Foundation; either version 3 of the License, or (at your option) any later
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* version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 51
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* Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* For any additional information, do not hesitate to contact us at info AT
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* gvsig.com, or visit our website www.gvsig.com.
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*/
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package org.gvsig.app.extension; |
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import org.gvsig.andami.IconThemeHelper; |
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import org.gvsig.andami.plugins.Extension; |
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import org.gvsig.app.ApplicationLocator; |
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import org.gvsig.app.ApplicationManager; |
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import org.gvsig.app.project.documents.view.ViewDocument; |
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import org.gvsig.app.project.documents.view.gui.IView; |
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import org.gvsig.fmap.mapcontext.ViewPort; |
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/**
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* Extensi?n que cambia el extent de la vista al extent anterior.
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*/
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public class ZoomPrev extends Extension { |
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public void postInitialize() {} |
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public void initialize() { |
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IconThemeHelper.registerIcon("action", "view-navigation-zoom-back", this); |
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} |
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public boolean isEnabled() { |
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ApplicationManager application = ApplicationLocator.getManager(); |
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IView view = (IView) application.getActiveComponent(ViewDocument.class); |
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if (view == null) { |
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return false; |
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} |
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ViewDocument document = view.getViewDocument(); |
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ViewPort vp = document.getMapContext().getViewPort(); |
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return vp.getEnvelopes().hasPrevious();
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} |
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public boolean isVisible() { |
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ApplicationManager application = ApplicationLocator.getManager(); |
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IView view = (IView) application.getActiveComponent(ViewDocument.class); |
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if (view == null) { |
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return false; |
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} |
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ViewDocument document = view.getViewDocument(); |
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return document.getMapContext().getLayers().getLayersCount() > 0; |
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} |
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public void execute(String arg0) { |
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ApplicationManager application = ApplicationLocator.getManager(); |
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IView view = (IView) application.getActiveComponent(ViewDocument.class); |
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if (view == null) { |
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return;
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} |
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ViewDocument document = view.getViewDocument(); |
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ViewPort vp = document.getMapContext().getViewPort(); |
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vp.setPreviousEnvelope(); |
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document.setModified(true);
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ApplicationLocator.getManager().refreshMenusAndToolBars(); |
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} |
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} |