/*
 * Indoorhelper is a JOSM plug-in to support users when creating their own indoor maps.
 *  Copyright (C) 2016  Erik Gruschka
 *
 *  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 3 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, see <http://www.gnu.org/licenses/>.
 */

package views;

import static org.openstreetmap.josm.tools.I18n.tr;

import java.awt.*;
import java.awt.event.ActionListener;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import java.awt.event.ItemListener;
import java.util.List;
import java.util.ListIterator;

import javax.swing.*;
import javax.swing.border.*;
import org.openstreetmap.josm.gui.dialogs.ToggleDialog;
import org.openstreetmap.josm.gui.widgets.DisableShortcutsOnFocusGainedTextField;
import org.openstreetmap.josm.gui.widgets.JosmComboBox;

import model.IndoorLevel;
import model.TagCatalog;
import model.TagCatalog.IndoorObject;

/**
 * 
 * This is the main toolbox of the indoorhelper plug-in.
 * 
 * @author egru
 *
 */
@SuppressWarnings("serial")
public class ToolBoxView extends ToggleDialog{
	private JPanel dialogPane;
	private JPanel contentPanel;
	private JToggleButton powerButton;
	private JLabel levelLabel;
	private JosmComboBox<String> levelBox;
	private JLabel levelTagLabel;
	private DisableShortcutsOnFocusGainedTextField levelTagField;
	private JLabel objectLabel;
	private JosmComboBox<TagCatalog.IndoorObject> objectBox;
	private JLabel nameLabel;
	private DisableShortcutsOnFocusGainedTextField nameField;
	private JLabel refLabel;
	private DisableShortcutsOnFocusGainedTextField refField;
	private JPanel buttonBar;
	private JButton applyButton;
	private JSeparator separator1;
	private JSeparator separator2;
	private PresetButton preset1;
	private PresetButton preset2;
	private PresetButton preset3;
	private PresetButton preset4;
	
	public ToolBoxView(){
		super(tr("Indoor Mapping Helper"), "indoorhelper", 
				tr("Toolbox for indoor mapping assistance"), null, 300, true);
		
		initComponents();
	}
	
	/**
	 * Creates the layout of the plug-in.
	 */
	private void initComponents() {
		dialogPane = new JPanel();
		contentPanel = new JPanel();
		powerButton = new JToggleButton();
		levelLabel = new JLabel();
		levelBox = new JosmComboBox<String>();
		levelTagLabel = new JLabel();
		levelTagField = new DisableShortcutsOnFocusGainedTextField();
		objectLabel = new JLabel();
		objectBox = new JosmComboBox<>(TagCatalog.IndoorObject.values());
		nameLabel = new JLabel();
		nameField = new DisableShortcutsOnFocusGainedTextField();
		refLabel = new JLabel();
		refField = new DisableShortcutsOnFocusGainedTextField();
		buttonBar = new JPanel();
		applyButton = new JButton();
		separator1 = new JSeparator();
		separator2 = new JSeparator();
		preset1 = new PresetButton(IndoorObject.ROOM);
		preset2 = new PresetButton(IndoorObject.SHELL);
		preset3 = new PresetButton(IndoorObject.CONCRETE_WALL);
		preset4 = new PresetButton(IndoorObject.GLASS_WALL);

		//======== this ========
		//Container contentPane = this.get;
		//contentPane.setLayout(new BorderLayout());

		//======== dialogPane ========
		{
			dialogPane.setBorder(new EmptyBorder(12, 12, 12, 12));
			dialogPane.setLayout(new BorderLayout());

			//======== contentPanel ========
			{
				contentPanel.setLayout(new GridBagLayout());
				((GridBagLayout)contentPanel.getLayout()).columnWidths = new int[] {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
				((GridBagLayout)contentPanel.getLayout()).rowHeights = new int[] {0, 0, 0, 0, 0, 0, 0, 0};
				((GridBagLayout)contentPanel.getLayout()).columnWeights = new double[] {0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 1.0E-4};
				((GridBagLayout)contentPanel.getLayout()).rowWeights = new double[] {0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 1.0E-4};

				//---- powerButton ----
				powerButton.setText(tr("POWER"));
				powerButton.setToolTipText(tr("Activates the plug-in"));
				contentPanel.add(powerButton, new GridBagConstraints(8, 0, 4, 1, 0.0, 0.0,
					GridBagConstraints.CENTER, GridBagConstraints.BOTH,
					new Insets(0, 0, 5, 5), 0, 0));
				contentPanel.add(separator1, new GridBagConstraints(1, 1, 12, 1, 0.0, 0.0,
					GridBagConstraints.CENTER, GridBagConstraints.BOTH,
					new Insets(0, 0, 5, 5), 0, 0));

				//---- levelLabel ----
				levelLabel.setText(tr("Working Level"));
				contentPanel.add(levelLabel, new GridBagConstraints(1, 2, 2, 1, 0.0, 0.0,
					GridBagConstraints.CENTER, GridBagConstraints.BOTH,
					new Insets(0, 0, 5, 5), 0, 0));

				//---- levelBox ----
				levelBox.setEnabled(false);
				levelBox.setEditable(false);
				levelBox.setToolTipText(tr("Selects the working level."));
				contentPanel.add(levelBox, new GridBagConstraints(3, 2, 3, 1, 0.0, 0.0,
					GridBagConstraints.CENTER, GridBagConstraints.BOTH,
					new Insets(0, 0, 5, 5), 0, 0));

				//---- levelTagLabel ----
				levelTagLabel.setText(tr("Level Name"));
				contentPanel.add(levelTagLabel, new GridBagConstraints(7, 2, 1, 1, 0.0, 0.0,
					GridBagConstraints.CENTER, GridBagConstraints.BOTH,
					new Insets(0, 0, 5, 5), 0, 0));

				//---- levelTagField ----
				levelTagField.setEnabled(false);
				levelTagField.setColumns(6);
				levelTagField.setToolTipText(tr("Optional name-tag for a level."));
				contentPanel.add(levelTagField, new GridBagConstraints(8, 2, 5, 1, 0.0, 0.0,
					GridBagConstraints.CENTER, GridBagConstraints.BOTH,
					new Insets(0, 0, 5, 5), 0, 0));
				contentPanel.add(separator2, new GridBagConstraints(1, 3, 12, 1, 0.0, 0.0,
					GridBagConstraints.CENTER, GridBagConstraints.BOTH,
					new Insets(0, 0, 5, 5), 0, 0));

				//---- objectLabel ----
				objectLabel.setText(tr("Object"));
				contentPanel.add(objectLabel, new GridBagConstraints(0, 4, 3, 1, 0.0, 0.0,
					GridBagConstraints.CENTER, GridBagConstraints.BOTH,
					new Insets(0, 0, 5, 5), 0, 0));

				//---- objectBox ----
				objectBox.setEnabled(false);
				objectBox.setPrototypeDisplayValue(IndoorObject.CONCRETE_WALL);
				objectBox.setToolTipText(tr("The object preset you want to tag."));
				contentPanel.add(objectBox, new GridBagConstraints(3, 4, 3, 1, 0.0, 0.0,
					GridBagConstraints.CENTER, GridBagConstraints.BOTH,
					new Insets(0, 0, 5, 5), 0, 0));

				//---- nameLabel ----
				nameLabel.setText(tr("Name"));
				contentPanel.add(nameLabel, new GridBagConstraints(0, 5, 3, 1, 0.0, 0.0,
					GridBagConstraints.CENTER, GridBagConstraints.BOTH,
					new Insets(0, 0, 5, 5), 0, 0));

				//---- nameField ----
				nameField.setEnabled(false);
				nameField.addFocusListener(new FocusListener() {
					
					@Override
					public void focusLost(FocusEvent e) {}
					
					@Override
					public void focusGained(FocusEvent e) {
						nameField.selectAll();						
					}
				});
				nameField.setToolTipText(tr("Sets the name tag when the room-object is selected."));
				contentPanel.add(nameField, new GridBagConstraints(3, 5, 3, 1, 0.0, 0.0,
					GridBagConstraints.CENTER, GridBagConstraints.BOTH,
					new Insets(0, 0, 5, 5), 0, 0));

				//---- refLabel ----
				refLabel.setText(tr("Reference"));
				contentPanel.add(refLabel, new GridBagConstraints(0, 6, 3, 1, 0.0, 0.0,
					GridBagConstraints.CENTER, GridBagConstraints.BOTH,
					new Insets(0, 0, 0, 5), 0, 0));

				//---- refField ----
				refField.setEnabled(false);
				refField.addFocusListener(new FocusListener() {
					
					@Override
					public void focusLost(FocusEvent e) {}
					
					@Override
					public void focusGained(FocusEvent e) {
						refField.selectAll();
					}
				});
				refField.setToolTipText(tr("Sets the ref tag when the room-object is selected."));
				contentPanel.add(refField, new GridBagConstraints(3, 6, 3, 1, 0.0, 0.0,
					GridBagConstraints.CENTER, GridBagConstraints.BOTH,
					new Insets(0, 0, 0, 5), 0, 0));
				
				//---- preset1 ----
				preset1.setEnabled(false);
				contentPanel.add(preset1, new GridBagConstraints(16, 2, 1, 1, 0.0, 0.0,
					GridBagConstraints.CENTER, GridBagConstraints.BOTH,
					new Insets(0, 0, 5, 5), 0, 0));
				contentPanel.add(separator2, new GridBagConstraints(1, 3, 13, 1, 0.0, 0.0,
					GridBagConstraints.CENTER, GridBagConstraints.BOTH,
					new Insets(0, 0, 5, 5), 0, 0));

				//---- preset2 ----
				preset2.setEnabled(false);
				contentPanel.add(preset2, new GridBagConstraints(16, 3, 1, 1, 0.0, 0.0,
					GridBagConstraints.CENTER, GridBagConstraints.BOTH,
					new Insets(0, 0, 5, 5), 0, 0));
				
				//---- preset3 ----
				preset3.setEnabled(false);
				contentPanel.add(preset3, new GridBagConstraints(16, 4, 1, 1, 0.0, 0.0,
					GridBagConstraints.CENTER, GridBagConstraints.BOTH,
					new Insets(0, 0, 5, 5), 0, 0));
				
				//---- preset4 ----
				preset4.setEnabled(false);
				contentPanel.add(preset4, new GridBagConstraints(16, 5, 1, 1, 0.0, 0.0,
					GridBagConstraints.CENTER, GridBagConstraints.BOTH,
					new Insets(0, 0, 5, 5), 0, 0));
			}
			dialogPane.add(contentPanel, BorderLayout.CENTER);

			//======== buttonBar ========
			{
				buttonBar.setBorder(new EmptyBorder(12, 0, 0, 0));
				buttonBar.setLayout(new GridBagLayout());
				((GridBagLayout)buttonBar.getLayout()).columnWidths = new int[] {0, 80};
				((GridBagLayout)buttonBar.getLayout()).columnWeights = new double[] {1.0, 0.0};

				//---- applyButton ----
				applyButton.setText(tr("Apply Tags"));
				applyButton.setEnabled(false);
				buttonBar.add(applyButton, new GridBagConstraints(0, 0, 2, 1, 0.0, 0.0,
					GridBagConstraints.CENTER, GridBagConstraints.BOTH,
					new Insets(0, 0, 0, 0), 0, 0));
			}
			dialogPane.add(buttonBar, BorderLayout.SOUTH);
		}
		//contentPane.add(dialogPane, BorderLayout.CENTER);
		
		
		this.createLayout(dialogPane, false, null);
	}
	
	/**
	 * Returns the state of the power button.
	 * 
	 * @return boolean which is true when the button is selected
	 */
	public boolean getPowerButtonState(){
		return this.powerButton.isSelected();
	}
	
	/**
	 * Enables or disables the interactive UI elements of the toolbox.
	 * 
	 * @param enabled set this true for enabled elements
	 */
	public void setAllUiElementsEnabled(boolean enabled){
		this.applyButton.setEnabled(enabled);
		this.levelBox.setEnabled(enabled);
		this.objectBox.setEnabled(enabled);
		this.nameField.setEnabled(enabled);
		this.refField.setEnabled(enabled);
		this.levelTagField.setEnabled(enabled);
		this.preset1.setEnabled(enabled);
		this.preset2.setEnabled(enabled);
		this.preset3.setEnabled(enabled);
		this.preset4.setEnabled(enabled);
		
		
		if(enabled==false) {
			resetUiElements();
			this.levelTagField.setText("");
		}
	}
	
	/**
	 * Enables or disables the interactive text box elements name and ref.
	 * 
	 * @param enabled set this true for enabled elements
	 */
	public void setTagUiElementsEnabled(boolean enabled){
		this.nameField.setEnabled(enabled);
		this.refField.setEnabled(enabled);
		
		if(enabled==false) resetUiElements();
	}
	
	/**
	 * Disables the power-button of the plug-in.
	 */
	public void setPowerButtonDisabled(){
		this.powerButton.setSelected(false);
	}
	
	/**
	 * Getter for the selected {@link IndoorObject} in the objectBox.
	 * 
	 * @return the selected indoor object in the object ComboBox.
	 */	
	public IndoorObject getSelectedObject(){
		return (IndoorObject) this.objectBox.getSelectedItem();
	}
	
	
	/**
	 * Sets the level list for the level selection comboBox.
	 * 
	 * @param levelList the list of levels which you want to set
	 */
	public void setLevelList(List<IndoorLevel> levelList){
		this.levelBox.removeAllItems();
		
		ListIterator<IndoorLevel> listIterator = levelList.listIterator();
		
		while(listIterator.hasNext()){
			IndoorLevel level = listIterator.next();
			if(level.hasEmptyName()){
				this.levelBox.addItem(Integer.toString(level.getLevelNumber()));
			} else{
				this.levelBox.addItem(level.getName());
			}
		}		
	}
	
	/**
	 * Getter for the selected working level.
	 * 
	 * @return the index of the selected item in the level-box
	 */
	public int getSelectedLevelIndex(){
		return this.levelBox.getSelectedIndex();
	}
	
	/**
	 * Checks if the level list is empty.
	 *  
	 * @return boolean which is true if the level-list is empty
	 */
	public boolean levelListIsEmpty(){
		if(this.levelBox.getItemCount()==0){
			return true;
		} else{
			return false;
		}
	}
	
	/**
	 * Getter for the level-name-field.
	 * 
	 * @return the {@link String} of the levelTagField
	 */
	public String getLevelName(){
		return this.levelTagField.getText();
	}
	
	/**
	 * Setter for the level name field.
	 * 
	 * @param name the String for the levelTagField
	 */
	public void setLevelName(String name){
		this.levelTagField.setText(name);
	}
	
	/**
	 * Getter for the name {@link TextField}.
	 * 
	 * @return {@link String} of the name text field
	 */
	public String getNameText(){
		return this.nameField.getText();
	}
	
	/**
	 * Getter for the ref {@link TextField}.
	 * 
	 * @return {@link String} of the ref text field
	 */
	public String getRefText(){
		return this.refField.getText();
	}
	
	/**
	 * Resets the view by making the UI elements disabled and deleting the level list.
	 */
	public void reset(){
		this.setAllUiElementsEnabled(false);
		this.levelBox.removeAllItems();
	}
	
	/**
	 * Clears the text boxes and sets an empty {@link String}.
	 */
	public void resetUiElements(){
		this.nameField.setText("");
		this.refField.setText("");
	}
	
	/*
	 * ********************************
	 * SETTERS FOR THE BUTTON LISTENERS
	 * ********************************
	 */
	
	/**
	 * Set the listener for the power button.
	 * 
	 * @param l the listener to set
	 */
	public void setPowerButtonListener(ActionListener l){
		this.powerButton.addActionListener(l);		
	}
	
	/**
	 * Set the listener for the apply button.
	 * 
	 * @param l the listener to set
	 */
	public void setApplyButtonListener(ActionListener l){
		this.applyButton.addActionListener(l);
	}
	
	/**
	 * Set the listener which is called when a new item in the level list is selected.
	 * 
	 * @param l the listener to set
	 */
	public void setLevelItemListener(ItemListener l){
		this.levelBox.addItemListener(l);
	}
	
		
	/**
	 * Set the listener which is called when a new item in the object list is selected.
	 * 
	 * @param l the listener to set
	 */
	public void setObjectItemListener(ItemListener l){
		this.objectBox.addItemListener(l);
	}	
	
	// Preset Button Functions
	
	public void setPresetButtons(List<IndoorObject> objects){
		this.preset1.setIndoorObject(objects.get(0));
		this.preset2.setIndoorObject(objects.get(1));
		this.preset3.setIndoorObject(objects.get(2));
		this.preset4.setIndoorObject(objects.get(3));
	}
	
	public void setPreset1Listener(ActionListener l){
		this.preset1.addActionListener(l);
	}
	
	public void setPreset2Listener(ActionListener l){
		this.preset2.addActionListener(l);
	}
	
	public void setPreset3Listener(ActionListener l){
		this.preset3.addActionListener(l);
	}
	
	public void setPreset4Listener(ActionListener l){
		this.preset4.addActionListener(l);
	}
	
	public IndoorObject getPreset1(){
		return preset1.getIndoorObject();
	}
	
	public IndoorObject getPreset2(){
		return preset2.getIndoorObject();
	}
	
	public IndoorObject getPreset3(){
		return preset3.getIndoorObject();
	}
	
	public IndoorObject getPreset4(){
		return preset4.getIndoorObject();
	}
}