DSP-657 Handle links in XML text values

[tobiasschweizer]

resolves DSP-657

• display external links in read-mode for standard mapping (coordinate with https://dasch.myjetbrains.com/youtrack/issue/DSP-297)

• react to clicking on internal links in read-mode for standard mapping

• try to use @HostListener: https://github.com/dhlab-basel/beol/blob/04c11b712246236cdba732689997bb12d025c888/src/app/directives/mathjax.directive.ts#L242-L375 for internal links: target resource should be shown in the resource viewer

• add target: '_blank' to attributes for external links so that they open in a new tab -> this might be solved in https://dasch.myjetbrains.com/youtrack/issue/DSP-297

[tobiasschweizer]

@flavens @mdelez @kilchenmann
This PR adds a directive with two @Outputs to react to click and hover events on internal links in text values with markup.

I wonder how this could be integrated in the resource viewer. Could the resource viewer propagate these events, so when used in an app, the behavior could be defined.

I think the resource viewer could have one @Ouptput for click events on internal links that would combine:

• clicks on an link value in read-mode
• clicks on an internal link in a text value with markup in read-mode

see https://dasch.myjetbrains.com/youtrack/issue/DSP-784

[mdelez]

Nice :)

[tobiasschweizer]

@flavens I think #203 will also handle external links in HTML text values in read-mode. However, could we make sure it does not affect the markup inside CKEditor (when the HTML is being edited)?

[flavens]

@flavens I think #203 will also handle external links in HTML text values in read-mode. However, could we make sure it does not affect the markup inside CKEditor (when the HTML is being edited)?

I can check that

[tobiasschweizer]

@flavens I think #203 will also handle external links in HTML text values in read-mode. However, could we make sure it does not affect the markup inside CKEditor (when the HTML is being edited)?

I can check that

Great, thank you. If I can help you, let me know.