Proposal: creating ViewContext interface to determine view name

[klimov-paul]

This issue has been exposed at #1049

'ViewContext' Interface extracted, allowing to determine view file names via context as well as keeping common code inside the 'View'

[qiangxue]

Looks good to me overall.

ViewContext should be renamed to ViewContextInterface, according to our previous discussion about interface naming convention.

Could you please check this PR #941 and see if your PR will fix the issue?

[coveralls]

Coverage decreased (-0.4%) when pulling 83e353d on klimov-paul:view-context-interface into 28aa451 on yiisoft:master.

[coveralls]

Coverage decreased (-0.4%) when pulling e0294ea on klimov-paul:view-context-interface into 28aa451 on yiisoft:master.

[klimov-paul]

I am afraid there is no way ViewContextInterface can solve #941.

Usage of “Application::layoutPath”, “Module::layoutPath” eliminates such possibility.
When program flow comes to ‘Controller::findViewFile()’ there is no way to determine if the requested view should be searched at ‘viewPath’ or at ‘layoutPath’. This means I can not simplify or remove ‘Controller::findLayoutFile()’ method.

Note: the problem can be solved, if we eliminate separated ‘layoutPath’ and switched back to Yii1 practice of storing layouts under ‘viewPath’.

[qiangxue]

Thanks!