Vaadin 8 compatibility mode support

[bcmedeiros]

Currently I'm migrating some Vaadin 7 projetcs to 8, and some of my grids will be using compatibility mode com.vaadin.v7 for a little while..

I need a version of the 1.x branch of this lib that works with com.vaadin.v7 classes, and I may provide you some code to achieve that.

[bcmedeiros]

I ended up doing this in the fork of my company. I did not provide a pull request because I don't know if this project wants to maintain such a feature. If you are interested, please, let me know and I can provide a PR in the way you need it.

If you want to use it, I just published an artifact with this change in my company's repo. You can use it with the following configuration:

<repositories>
	<repository>
		<id>visagio-public-releases</id>
		<url>https://artifacts.visagio.com/artifactory/public-releases</url>
		<releases>
			<enabled>true</enabled>
		</releases>
		<snapshots>
			<enabled>false</enabled>
		</snapshots>
	</repository>
</repositories>

Dependency:

	<dependency>
		<groupId>org.vaadin.addons</groupId>
		<artifactId>vaadin-compatibility-excel-exporter</artifactId>
		<version>1.8-visagio-1</version>
	</dependency>

Migration:

1. Add the above dependency
2. Change your imports from org.vaadin.addons.excelexporter.* to org.vaadin.v7.addons.excelexporter.*
3. Be happy :)

Notes:

This version is basically the 1.x branch plus compatibility mode changes, but it also contains my fix to #8. It's a pretty simple one, but consider that if you want to use this version.

[mobileWMS]

Any more official compatibility mode coming?

[mobileWMS]

Is this maven artifact still available? I ask because when I added it to my project, I get "Missing artifact org.vaadin.addons:vaadin-compatibility-excel-exporter:jar:1.8-visagio-1" with the pom, even after forcing an update of the maven project in Eclipse.