feat: add xml validation tool

[gm0stache]

Pull request type

Please check the type of change your PR introduces:

• Bugfix
• Feature
• UI change (please include screenshot!)
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes
• Internationalization and localization
• Other (please describe):

What is the current behavior?

Currently there is no tool available in DevToys to enable a developer to validate XML data against a XSD schema.

Issue Number: #171

What is the new behavior?

• a new XmlValidator tool page was created
• logic was added to support validating XML data with a XSD schema
• unit tests were added to assert the functionality of the XML validation logic

Other information

Quality check

Before creating this PR, have you:

• Followed the code style guideline as described in CONTRIBUTING.md
• Verified that the change work in Release build configuration
• Checked all unit tests pass

[veler]

Hi,
Thank you for this pull request. :)
Can you please address the merge conflict? Also, on my side, the solution doesn't build for some reason. 🤔

[gm0stache]

Hi Etienne!
Thanks for the fast feedback!
I will look into it 😅

[gm0stache]

Alright, so the app should start now - sorry for the inconvenience!
As far as I can tell the changes in the src/dev/impl/DevToys/DevToys.csproj file (causing the conflict) are ok...

[veler]

Alright, so the app should start now - sorry for the inconvenience! As far as I can tell the changes in the src/dev/impl/DevToys/DevToys.csproj file (causing the conflict) are ok...

Thank you :) Unfortunately I still see a merge conflict indicated by GitHub. It looks like your branch doesn't have the last changes from the main branch.

[gm0stache]

...one noob mistake after another .XD
So sorry - just rebased from main.

[veler]

Hello,

So sorry for the late answer. Wow, it's been 15 days already >.<

I gave a try to your pull request and overall, I love it! :D It's such a great tool and great execution!

One thing that bother me is the UI, but I can provide some guidance for it 😉

1. In most of tools, there's no need of a "convert", "compare" or "validate" button. The simple fact that the text fields change make the app doing the work on the user input. This is even more true in Cheksum Generator tool, where Output Comparer will show an info bar indication if the has are equal.
   
   
   
   Therefore, I would suggest the following approach:
   • When XSD input changes, if XML input isn't empty, do the validation.
   • When XML input changes, if XSD input isn't empty, do the validation.
   • When one of the two input is empty, don't do the validation (unless there are some cases where an empty XSD / XML can be a valid input? 🤔)
   • And therefore, remove the Validate button.
2. To be consistent with other tools like Checksum Generator, replace this UI by an InfoBar.
   
   A pre-made UI component exists for it. See an example here:
   https://github.com/veler/DevToys/blob/d1be28ed5837f02c5ed2a4b08185f872f54a2a8c/src/dev/impl/DevToys/Views/Tools/Generators/CheckSumGenerator/CheckSumGeneratorToolPage.xaml#L87-L92
3. Make the text editor showing the XML colorization syntax. Here is how you can do this: https://github.com/veler/DevToys/blob/d1be28ed5837f02c5ed2a4b08185f872f54a2a8c/src/dev/impl/DevToys/Views/Tools/Formatters/XmlFormatter/XmlFormatterToolPage.xaml#L93-L101

What do you think? 😊

Thank you, and sorry again for the late answer. Please let me know if you have any question.

[gm0stache]

Hi Etienne!
First of all: no worries - I am very thankful for your detailed response!
I love all your suggestions and will implement them!
I am on vacation for the rest of the week, but I will start working on it right afterwards 🙂
Thanks again and have a nice week!

[veler]

Hi Etienne! First of all: no worries - I am very thankful for your detailed response! I love all your suggestions and will implement them! I am on vacation for the rest of the week, but I will start working on it right afterwards 🙂 Thanks again and have a nice week!

That sounds great to me! :D Enjoy your vacation, and thank you again for your contribution!

[gm0stache]

Hi Etienne!
Was able to address the issues already!
Hope you find everything as expected 😄

[veler]

Hello 😊
Thank you for the update. Very great progress overall! It feels almost ready for production!
I left some additional comments. Please let me know if you have any question or need any help.

Thank you again for this contribution, I'm excited to see this in DevToys 😁🥳

[gm0stache]

Hi Etienne!
Wow! Thanks for your extensive feedback!
I am currently addressing all the things you mentioned - will be finished this weekend😃
Have a nice weekend!

[gm0stache]

Hi Etienne,
I addressed all threads.
Let me know if there is anything else coming to your mind!
All the best from Germany!

P.S.: Rebased the latest changes from main already. (I am learning 😅😋)

[gm0stache]

Ah, and don't be confused - I just updated my username and picture.
Think it makes interactions more personal 😊

[veler]

It looks all great now! Thank you so much for offering this new tool. It will be shipped in the next update 🎉😁

[gm0stache]

Awesome!
Thank you for all of your help!
Have a great time!