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[[File:Classl3T2.png]]
*Copy and paste the following to their respective file.
'''Weather.java'''
<source lang=java>
package ecl.team2.lab3.weathermodel;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.util.Random;
public class Weather {
private float windspeedInKM;
private char windDirection;
private PropertyChangeSupport propertyChangeSupport = new PropertyChangeSupport(this);
public Weather()
{
}
public Weather(String cit)
{
city=cit;
Random randomGenerator = new Random();
tempInCelcius = randomGenerator.nextFloat()+35;
rainInMM = randomGenerator.nextFloat()+10;
snowInMM = randomGenerator.nextFloat()+10;
windspeedInKM = randomGenerator.nextFloat()+50;
int r = randomGenerator.nextInt(4);
switch(r){
case 0:
windDirection = 'E';
break;
case 1:
windDirection = 'W';
break;
case 2:
windDirection = 'N';
break;
case 3:
windDirection = 'S';
break;
}
}
public Weather(String pcity, float ptemp, float prain, float psnow, float pwspeed, char pwdirection){
public void setWindDirection(char windDirection) {
propertyChangeSupport.firePropertyChange("", this.windDirection, this.windDirection = windDirection);
}
public void setWindspeedInKM(float windspeedInKM) {
propertyChangeSupport.firePropertyChange("", this.windspeedInKM, this.windspeedInKM = windspeedInKM);
}
public void setSnowInMM(float snowInMM) {
propertyChangeSupport.firePropertyChange("", this.snowInMM, this.snowInMM = snowInMM);
}
public void setRainInMM(float rainInMM) {
propertyChangeSupport.firePropertyChange("", this.rainInMM, this.rainInMM = rainInMM);
}
public void setTempInCelcius(float tempInCelcius) {
propertyChangeSupport.firePropertyChange("", this.tempInCelcius, this.tempInCelcius = tempInCelcius);
}
public void setCity(String city) {
propertyChangeSupport.firePropertyChange("", this.city, this.city = city);
}
public String getCity() {
return city;
}
public void addPropertyChangeListener(String name, PropertyChangeListener listener)
{
propertyChangeSupport.addPropertyChangeListener(name,listener);
}
public void removePropertyChangeListener(PropertyChangeListener listener)
{
propertyChangeSupport.addPropertyChangeListener(listener);
}
public String toString()
{
return city + " " + tempInCelcius + " " + rainInMM + " " + snowInMM + " "
+ windspeedInKM + " " + windDirection;
}
}
</source>
'''SimpleWeatherSystem.java'''
<source lang=java>
package ecl.team2.lab3.weathermodel;
}
}
public Weather getWeather(String city) throws Exception {
// TODO Auto-generated method stub
}
return found;
}
public void addCity(String nCity)
{
Random randomGenerator = new Random();
float temp = randomGenerator.nextFloat()+35;
float rain = randomGenerator.nextFloat()+10;
float snow = randomGenerator.nextFloat()+10;
float windspeed = randomGenerator.nextFloat()+50;
char winddirection = '.';
int r = randomGenerator.nextInt(4);
switch(r){
case 0:
winddirection = 'E';
break;
case 1:
winddirection = 'W';
break;
case 2:
winddirection = 'N';
break;
case 3:
winddirection = 'S';
break;
}
Weather w = new Weather(nCity, temp, rain, snow, windspeed, winddirection);
this.weathers.add(w);
System.out.println(w.toString());
}
public void removeCity(String oCity)
{
this.weathers.remove(oCity);
}
public ArrayList<Weather> getAllWeather()
{
return weathers;
}
}
*These classes will be used later on into the tutorial.
==Creating and Using Commands/Views=====Commands===*Commands are in the most lamen laymen terms, actions. What we mean by action is that we are insisting through some physical representation, whether it be a button or plain-typed text, we are calling an event. That event can be to exit the program or even perform a feature within the application.
*Let's create our first menu for the menu bar that will contain a command to exit the application.
*First open the file plugin.xml, click on the tab "Extensions", and then click on the "Add" button.
*You should see this window pop-up
[[File:FWindowpop3T2.png]]
*Now click on "File" within the menu bar and click "Exit", this will close the program based on the small application we created for that command.'''Pre-emptive work for later on'''*Given that you now have context of how to create a command, we will now progress to creating commands that will be used later within our application. Please create the following commands along with the required items: '''AddCityHandler'''For Commmand<pre>id: ecl.team2.lab3.rcpExample.AddCityname: Add CitydefaultHandler: ecl.team2.lab3.commands.AddCityHandler</pre> For Menu Command<pre>commandId: ecl.team2.lab3.rcpExample.AddCitylabel: Add Citytooltip: Adds a city to list</pre> For AddCityHandler.java<source lang=java>package ecl.team2.lab3.commands; import org.eclipse.core.commands.AbstractHandler;import org.eclipse.core.commands.ExecutionEvent;import org.eclipse.core.commands.ExecutionException;import org.eclipse.core.commands.IHandler;import org.eclipse.ui.IWorkbenchWindow;import org.eclipse.ui.IWorkbenchPage;import org.eclipse.ui.PartInitException;import org.eclipse.ui.handlers.HandlerUtil; //This will allow us to edit the content using the editor windowimport ecl.team2.lab3.editor.WeatherEditor;import ecl.team2.lab3.editor.WeatherInput; public class AddCityHandler extends AbstractHandler implements IHandler { @Override public Object execute(ExecutionEvent event) throws ExecutionException { IWorkbenchWindow window = HandlerUtil.getActiveWorkbenchWindow(event); IWorkbenchPage page = window.getActivePage(); WeatherInput input = new WeatherInput("-1"); try { page.openEditor(input, WeatherEditor.ID); } catch (PartInitException e) { System.out.println(e.getMessage()); } return null; } }</source><br/><br/> '''RemoveCityHandler'''For Commmand<pre>id: ecl.team2.lab3.rcpExample.RemoveCityname: Add CitydefaultHandler: ecl.team2.lab3.commands.RemoveCityHandler</pre> For Menu Command<pre>commandId: ecl.team2.lab3.rcpExample.RemoveCitylabel: Remove Citytooltip: Removes a city or multiple cities based on selection</pre> For RemoveCityHandler.java<source lang=java>package ecl.team2.lab3.commands; import java.util.ArrayList;import java.util.Iterator; import org.eclipse.core.commands.AbstractHandler;import org.eclipse.core.commands.ExecutionEvent;import org.eclipse.core.commands.ExecutionException;import org.eclipse.core.commands.IHandler;import org.eclipse.jface.viewers.ISelection;import org.eclipse.jface.viewers.IStructuredSelection;import org.eclipse.ui.IWorkbenchPage;import org.eclipse.ui.IWorkbenchWindow;import org.eclipse.ui.handlers.HandlerUtil; import ecl.team2.lab3.rcpexample.WeatherView;import ecl.team2.lab3.weathermodel.*; public class RemoveCityHandler extends AbstractHandler implements IHandler { @Override public Object execute(ExecutionEvent event) throws ExecutionException { IWorkbenchWindow window = HandlerUtil.getActiveWorkbenchWindow(event); IWorkbenchPage page = window.getActivePage(); WeatherView view = (WeatherView) page.findView(WeatherView.ID); ISelection select = view.getSite().getSelectionProvider().getSelection(); if(select!=null && select instanceof IStructuredSelection) { IStructuredSelection sel = (IStructuredSelection)select; for(Iterator<Weather> iter = sel.iterator(); iter.hasNext();) { Weather temp = iter.next(); SimpleWeatherSystem.INSTANCE.removeCity(temp.getCity()); } view.getViewer().refresh(); } return null; } }</source><br/>===Views===Since most of the back-end coding has been completed through the "Commands" section, this portion will be brief.*In order to view and edit our content, we must create a view. Creating a view is very similar to creating a command, except you must add the extension "org.eclipse.ui.views" in our MANIFEST file.*You should have something that looks akin to this[[File:UiviewsT2.png]]*Now that we've included the extension, we should create a new view so we may view and edit our content. We do this by right-clicking our recent addition, scroll to "New", and then click on "view".*Enter the following information below and once that's completed click on "class*". Clicking on "class*" will allow us to create classes on the fly using the "New Java Class" wizard. Most of the mandatory components for creating a view java class has already been added, so all we have to do is click "Finish"[[File:Ext4T2.png]]*Replace code inside "WeatherView.java" with:<source lang=java>package ecl.team2.lab3.rcpexample; import org.eclipse.swt.SWT;import org.eclipse.swt.widgets.Composite;import org.eclipse.swt.widgets.Text;import org.eclipse.ui.part.ViewPart; public class WeatherView extends ViewPart{ public static final String ID = "ecl.team2.lab3.rcpexample.WeatherView"; @Override public void createPartControl(Composite parent) { this.setPartName("Weather"); Text text = new Text(parent, SWT.BORDER); text.setText("Weather content will be displayed here"); } @Override public void setFocus() { // TODO Auto-generated method stub }}</source><br/>*We must now add our recently created view to the perspective, we do this by again engaging with the extensions in the MANIFEST file. We must include the "org.eclipse.ui.perspectiveExtensions" extension. After it is added, we will add a "view" to the last branch dubbed "*(perspectiveExtensions).*Mimic the contents in the picture below[[File:Ext5T2.png]]*Launch the application, should get something akin to this[[File:AppT2.png]]<br/>==Define and Use Editor==