/*
 * Copyright (C) Azureus Software, Inc, All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
package org.gudy.azureus2.ui.swt.views;

import java.util.Map;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.*;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;

import org.gudy.azureus2.core3.config.COConfigurationManager;
import org.gudy.azureus2.core3.download.DownloadManager;
import org.gudy.azureus2.core3.internat.MessageText;
import org.gudy.azureus2.core3.util.*;
import org.gudy.azureus2.plugins.ui.UIPluginViewToolBarListener;
import org.gudy.azureus2.plugins.ui.tables.TableManager;
import org.gudy.azureus2.ui.swt.DelayedListenerMultiCombiner;
import org.gudy.azureus2.ui.swt.Messages;
import org.gudy.azureus2.ui.swt.Utils;
import org.gudy.azureus2.ui.swt.plugins.UISWTInstance;
import org.gudy.azureus2.ui.swt.plugins.UISWTView;
import org.gudy.azureus2.ui.swt.plugins.UISWTViewEvent;
import org.gudy.azureus2.ui.swt.pluginsimpl.UISWTViewCoreEventListener;
import org.gudy.azureus2.ui.swt.pluginsimpl.UISWTViewImpl;
import org.gudy.azureus2.ui.swt.views.table.TableViewSWT;
import org.gudy.azureus2.ui.swt.views.table.impl.TableViewSWT_TabsCommon;
import org.gudy.azureus2.ui.swt.views.table.utils.TableColumnCreator;

import com.aelitis.azureus.core.AzureusCore;
import com.aelitis.azureus.core.AzureusCoreFactory;
import com.aelitis.azureus.core.AzureusCoreRunningListener;
import com.aelitis.azureus.ui.common.ToolBarItem;
import com.aelitis.azureus.ui.common.table.TableColumnCore;
import com.aelitis.azureus.ui.common.table.TableView;
import com.aelitis.azureus.ui.common.table.impl.TableColumnManager;
import com.aelitis.azureus.ui.selectedcontent.ISelectedContent;
import com.aelitis.azureus.ui.selectedcontent.SelectedContentListener;
import com.aelitis.azureus.ui.selectedcontent.SelectedContentManager;
import com.aelitis.azureus.util.MapUtils;

/**
 * Wraps a "Incomplete" torrent list and a "Complete" torrent list into
 * one view
 */
public class MyTorrentsSuperView
	implements UISWTViewCoreEventListener,
	AEDiagnosticsEvidenceGenerator, UIPluginViewToolBarListener
{
	private static int SASH_WIDTH = 5;

	
  private MyTorrentsView torrentview;
  private MyTorrentsView seedingview;

	private Composite form;

	private MyTorrentsView lastSelectedView;


	private Composite child1;


	private Composite child2;


	private final Text txtFilter;


	private final Composite cCats;


	private Object ds;


	private UISWTView swtView;


	private MyTorrentsView viewWhenDeactivated;

  public MyTorrentsSuperView(Text txtFilter, Composite cCats) {
  	this.txtFilter = txtFilter;
		this.cCats = cCats;
		AzureusCoreFactory.addCoreRunningListener(new AzureusCoreRunningListener() {
			public void azureusCoreRunning(AzureusCore core) {
				Utils.execSWTThread(new AERunnable() {
					public void runSupport() {
						TableColumnManager tcManager = TableColumnManager.getInstance();
						tcManager.addColumns(getCompleteColumns());
						tcManager.addColumns(getIncompleteColumns());
					}
				});
			}
		});
  }
  

  public Composite getComposite() {
    return form;
  }
  
  public void initialize(final Composite parent) {
    if (form != null) {
      return;
    }

  	form = new Composite(parent, SWT.NONE);
  	FormLayout flayout = new FormLayout();
  	flayout.marginHeight = 0;
  	flayout.marginWidth = 0;
  	form.setLayout(flayout);
  	GridData gridData;
  	gridData = new GridData(GridData.FILL_BOTH);
  	form.setLayoutData(gridData);
  	

  	GridLayout layout;
  	
  	
  	child1 = new Composite(form,SWT.NONE);
  	layout = new GridLayout();
  	layout.numColumns = 1;
  	layout.horizontalSpacing = 0;
  	layout.verticalSpacing = 0;
  	layout.marginHeight = 0;
  	layout.marginWidth = 0;
  	child1.setLayout(layout);

  	final Sash sash = Utils.createSash( form, SASH_WIDTH );

    child2 = new Composite(form,SWT.NULL);
    layout = new GridLayout();
    layout.numColumns = 1;
    layout.horizontalSpacing = 0;
    layout.verticalSpacing = 0;
    layout.marginHeight = 0;
    layout.marginWidth = 0;
    child2.setLayout(layout);

    FormData formData;

    // More precision, times by 100
    int weight = (int) (COConfigurationManager.getFloatParameter("MyTorrents.SplitAt"));
		if (weight > 10000) {
			weight = 10000;
		} else if (weight < 100) {
			weight *= 100;
		}
		// Min/max of 5%/95%
		if (weight < 500) {
			weight = 500;
		} else if (weight > 9000) {
			weight = 9000;
		}
		double pct = (float)weight / 10000;		
		sash.setData("PCT", new Double(pct));

		// FormData for table child1
		formData = new FormData();
		formData.left = new FormAttachment(0, 0);
		formData.right = new FormAttachment(100, 0);
		formData.top = new FormAttachment(0, 0);
		formData.bottom = new FormAttachment((int) (pct * 100), 0);
		child1.setLayoutData(formData);
		final FormData child1Data = formData;
    
		// sash
		formData = new FormData();
		formData.left = new FormAttachment(0, 0);
		formData.right = new FormAttachment(100, 0);
		formData.top = new FormAttachment(child1);
		formData.height = SASH_WIDTH;
		sash.setLayoutData(formData);

    // child2
		formData = new FormData();
		formData.left = new FormAttachment(0, 0);
		formData.right = new FormAttachment(100, 0);
		formData.bottom = new FormAttachment(100, 0);
		formData.top = new FormAttachment(sash);

		child2.setLayoutData(formData);

		
		// Listeners to size the folder
		sash.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent e) {
				final boolean FASTDRAG = true;

				if (FASTDRAG && e.detail == SWT.DRAG)
					return;

				child1Data.height = e.y + e.height - SASH_WIDTH;
				form.layout();

				Double l = new Double((double) child1.getBounds().height
						/ form.getBounds().height);
				sash.setData("PCT", l);
				if (e.detail != SWT.DRAG) {
					int i = (int) (l.doubleValue() * 10000);
					COConfigurationManager.setParameter("MyTorrents.SplitAt", i);
				}
			}
		});

		form.addListener(SWT.Resize, new DelayedListenerMultiCombiner() {
			public void handleDelayedEvent(Event e) {
				if ( sash.isDisposed()){
					return;
				}
				Double l = (Double) sash.getData("PCT");
				if (l == null) {
					return;
				}
				int newHeight = (int) (form.getBounds().height * l.doubleValue());
				if (child1Data.height != newHeight || child1Data.bottom != null) {
					child1Data.bottom = null;
					child1Data.height = newHeight;
					form.layout();
				}
			}
		});

		AzureusCoreFactory.addCoreRunningListener(new AzureusCoreRunningListener() {
			public void azureusCoreRunning(final AzureusCore core) {
				Utils.execSWTThread(new AERunnable() {
					public void runSupport() {
						initializeWithCore(core, parent);
					}

				});
			}
  	});

  }
  
  private void initializeWithCore(AzureusCore core, Composite parent) {
    torrentview = createTorrentView(core,
				TableManager.TABLE_MYTORRENTS_INCOMPLETE, false, getIncompleteColumns(),
				child1);

    seedingview = createTorrentView(core,
				TableManager.TABLE_MYTORRENTS_COMPLETE, true, getCompleteColumns(),
				child2);

    	// delegate selections from the incomplete view to the sub-tabs owned by the seeding view
    
    SelectedContentManager.addCurrentlySelectedContentListener(
    	new SelectedContentListener()
    	{
    		public void 
    		currentlySelectedContentChanged(
    			ISelectedContent[] 		currentContent, 
    			String 					viewId ) 
    		{
    			if ( form.isDisposed() || torrentview == null || seedingview == null ){
    				
    				SelectedContentManager.removeCurrentlySelectedContentListener( this );
    				
    			}else{
    				
	    			TableView<?> selected_tv = SelectedContentManager.getCurrentlySelectedTableView();
	    			
    				TableViewSWT<?> incomp_tv 	= torrentview.getTableView();
       				TableViewSWT<?> comp_tv 	= seedingview.getTableView();

	    			if ( incomp_tv != null && comp_tv != null && ( selected_tv == incomp_tv || selected_tv == comp_tv )){
	    					    					
    					TableViewSWT_TabsCommon tabs = comp_tv.getTabsCommon();
    				
    					if ( tabs != null ){
    				
    						tabs.triggerTabViewsDataSourceChanged( (TableViewSWT<?>)selected_tv );
    					}
	    			}
    			}
    		}
    	});
    
  	initializeDone();
  }

  public void initializeDone() {
	}


  public void updateLanguage() {
  	// no super call, the views will do their own
  	
    if (getComposite() == null || getComposite().isDisposed())
      return;

    if (seedingview != null) {
    	seedingview.updateLanguage();
    }
    if (torrentview != null) {
    	torrentview.updateLanguage();
    }
	}

	public String getFullTitle() {
    return MessageText.getString("MyTorrentsView.mytorrents");
  }
  
  // XXX: Is there an easier way to find out what has the focus?
  private MyTorrentsView getCurrentView() {
    // wrap in a try, since the controls may be disposed
    try {
      if (torrentview != null && torrentview.isTableFocus()) {
        lastSelectedView = torrentview;
      } else if (seedingview != null && seedingview.isTableFocus()) {
      	lastSelectedView = seedingview;
      }
    } catch (Exception ignore) {/*ignore*/}

    return lastSelectedView;
  }

  /* (non-Javadoc)
   * @see com.aelitis.azureus.ui.common.ToolBarEnabler2#refreshToolBarItems(java.util.Map)
   */
  public void refreshToolBarItems(Map<String, Long> list) {
    MyTorrentsView currentView = getCurrentView();
    if (currentView != null) {
      currentView.refreshToolBarItems(list);
    }
  }

  /* (non-Javadoc)
   * @see com.aelitis.azureus.ui.common.ToolBarActivation#toolBarItemActivated(com.aelitis.azureus.ui.common.ToolBarItem, long)
   */
  public boolean toolBarItemActivated(ToolBarItem item, long activationType, Object datasource) {
    MyTorrentsView currentView = getCurrentView();
    if (currentView != null) {
      if (currentView.toolBarItemActivated(item, activationType, datasource)) {
      	return true;
      }
    }
    return false;
  }
  
  public DownloadManager[] getSelectedDownloads() {
	  MyTorrentsView currentView = getCurrentView();
	  if (currentView == null) {return null;}
	  return currentView.getSelectedDownloads();
  }
  
  public void
  generate(
	IndentWriter	writer )
  {

	  try{
		  writer.indent();
	  
		  writer.println( "Downloading" );
		  
		  writer.indent();

		  torrentview.generate( writer );
	  
	  }finally{
		  
		  writer.exdent();
		  
		  writer.exdent();
	  }
	  
	  try{
		  writer.indent();
	  
		  writer.println( "Seeding" );
		  
		  writer.indent();

		  seedingview.generate( writer );
	  
	  }finally{
		  
		  writer.exdent();

		  writer.exdent();
	  }
  }

	private Image obfusticatedImage(Image image) {
		if (torrentview != null) {
			torrentview.obfusticatedImage(image);
		}
		if (seedingview != null) {
			seedingview.obfusticatedImage(image);
		}
		return image;
	}

	public Menu getPrivateMenu() {
		return null;
	}

	public void viewActivated() {
		SelectedContentManager.clearCurrentlySelectedContent();

		if (viewWhenDeactivated != null) {
			viewWhenDeactivated.getComposite().setFocus();
			viewWhenDeactivated.updateSelectedContent(true);
		} else {
			MyTorrentsView currentView = getCurrentView();
			if (currentView != null ) {
				currentView.updateSelectedContent();
			}
		}
	}

	public void viewDeactivated() {
		viewWhenDeactivated = getCurrentView();
    /*
    MyTorrentsView currentView = getCurrentView();
    if (currentView == null) {return;}
    String ID = currentView.getShortTitle();
    if (currentView instanceof MyTorrentsView) {
    	ID = ((MyTorrentsView)currentView).getTableView().getTableID();
    }

    TableView tv = null;
    if (currentView instanceof MyTorrentsView) {
    	tv = ((MyTorrentsView) currentView).getTableView();    	
    }
    //SelectedContentManager.clearCurrentlySelectedContent();
    SelectedContentManager.changeCurrentlySelectedContent(ID, null, tv);
    */
	}
	
	/**
	 * Returns the set of columns for the incomplete torrents view
	 * Subclasses my override to return a different set of columns
	 * @return
	 */
	protected TableColumnCore[] getIncompleteColumns(){
		return TableColumnCreator.createIncompleteDM(TableManager.TABLE_MYTORRENTS_INCOMPLETE);
	}
	
	/**
	 * Returns the set of columns for the completed torrents view
	 * Subclasses my override to return a different set of columns
	 * @return
	 */
	protected TableColumnCore[] getCompleteColumns(){
		return TableColumnCreator.createCompleteDM(TableManager.TABLE_MYTORRENTS_COMPLETE);
	}
	
	
	/**
	 * Returns an instance of <code>MyTorrentsView</code>
	 * Subclasses my override to return a different instance of MyTorrentsView
	 * @param _azureus_core
	 * @param isSeedingView
	 * @param columns
	 * @param child1 
	 * @return
	 */
	protected MyTorrentsView 
	createTorrentView(
		AzureusCore 		_azureus_core,
		String 				tableID, 
		boolean 			isSeedingView, 
		TableColumnCore[] 	columns, 
		Composite 			c ) 
	{
		MyTorrentsView view = new MyTorrentsView(_azureus_core, tableID,
				isSeedingView, columns, txtFilter, cCats, isSeedingView );
		
		try {
			UISWTViewImpl swtView = new UISWTViewImpl(UISWTInstance.VIEW_MAIN, tableID, view, ds);
			
			swtView.initialize(c);
		} catch (Exception e) {
			Debug.out(e);
		}

		/*
		c.addListener(SWT.Activate, new Listener() {
			public void handleEvent(Event event) {
				viewActivated();
			}
		});
		c.addListener(SWT.Deactivate, new Listener() {
			public void handleEvent(Event event) {
				viewDeactivated();
			}
		});
		*/
		c.layout();
		return view;
	}


	public MyTorrentsView getTorrentview() {
		return torrentview;
	}


	public MyTorrentsView getSeedingview() {
		return seedingview;
	}
	
	public void dataSourceChanged(Object newDataSource) {
		ds = newDataSource;
	}

	public boolean eventOccurred(UISWTViewEvent event) {
		switch (event.getType()) {
			case UISWTViewEvent.TYPE_CREATE:
				swtView = (UISWTView) event.getData();
      	swtView.setToolBarListener(this);
				swtView.setTitle(getFullTitle());
				break;

			case UISWTViewEvent.TYPE_DESTROY:
				break;

			case UISWTViewEvent.TYPE_INITIALIZE:
				initialize((Composite) event.getData());
				return true;

			case UISWTViewEvent.TYPE_LANGUAGEUPDATE:
				swtView.setTitle(getFullTitle());
				Messages.updateLanguageForControl(getComposite());
				break;

			case UISWTViewEvent.TYPE_DATASOURCE_CHANGED:
				dataSourceChanged(event.getData());
				break;

			case UISWTViewEvent.TYPE_REFRESH:
				break;
				
			case UISWTViewEvent.TYPE_OBFUSCATE:
				Object data = event.getData();
				if (data instanceof Map) {
					obfusticatedImage((Image) MapUtils.getMapObject((Map) data, "image",
							null, Image.class));
				}
				break;
		}
		
		if (seedingview != null) {
    	try {
    		seedingview.getSWTView().triggerEvent(event.getType(), event.getData());
    	} catch (Exception e) {
    		Debug.out(e);
    	}
		}

		if (torrentview != null) {
    	try {
    		torrentview.getSWTView().triggerEvent(event.getType(), event.getData());
    	} catch (Exception e) {
    		Debug.out(e);
    	}
		}

		// both subviews will get focusgained, resulting in the last one grabbing
		// "focus".  We restore last used focus, but only after the subviews are
		// done being greedy
		switch (event.getType()) {
			case UISWTViewEvent.TYPE_FOCUSGAINED:
				viewActivated();
				break;

			case UISWTViewEvent.TYPE_FOCUSLOST:
				viewDeactivated();
				break;
		}

		return true;
	}
	
	public UISWTView getSWTView() {
		return swtView;
	}
}