Moved the link dialog partials into view components

Try to migrate the link dialog partials into view component to make it easier extendable and lesser repetitive.

In a later commit it will be configurable to allow other plugins to add their own tabs.

app/components/alchemy/admin/pages/anchor_tab.rb

@@ -0,0 +1,38 @@
+# frozen_string_literal: true
+
+module Alchemy
+  module Admin
+    module Pages
+      class AnchorTab < BaseLinkTab
+        def title
+          Alchemy.t("link_overlay_tab_label.anchor")
+        end
+
+        def type
+          :anchor
+        end
+
+        def fields
+          [
+            anchor_select,
+            title_input
+          ]
+        end
+
+        def message
+          content_tag("h3", Alchemy.t(:anchor_link_headline))
+        end
+
+        private
+
+        def anchor_select
+          label = label_tag("anchor_link", Alchemy.t(:anchor), class: "control-label")
+          select = select_tag(:anchor_link,
+            options_for_select([[Alchemy.t("Please choose"), ""]]),
+            is: "alchemy-select")
+          content_tag("div", label + select, class: "input select")
+        end
+      end
+    end
+  end
+end

app/components/alchemy/admin/pages/base_link_tab.rb

@@ -0,0 +1,63 @@
+# frozen_string_literal: true
+
+module Alchemy
+  module Admin
+    module Pages
+      class BaseLinkTab < ViewComponent::Base
+        delegate :render_message, to: :helpers
+
+        def initialize(url)
+          @url = url
+        end
+
+        def title
+          raise ArgumentError, "The tab needs to have a title"
+        end
+
+        def type
+          raise ArgumentError, "The tab needs to have a panel type"
+        end
+
+        def fields
+          []
+        end
+
+        def message
+          nil
+        end
+
+        def call
+          content = message ? render_message(:info, message) : ""
+          content += content_tag("div", content_tag("ul"), id: "errors", class: "errors")
+          content += fields.join("").html_safe + submit_button
+
+          form = content_tag("form", content.html_safe, {"data-link-form-type": type})
+
+          panel_name = "overlay_tab_#{type}_link"
+          content_tag("sl-tab", title, slot: "nav", panel: panel_name, active: type == @tab.to_sym) +
+            content_tag("sl-tab-panel", form, name: panel_name)
+        end
+
+        private
+
+        def title_input
+          name = "#{type}_link_title"
+          label = label_tag(name, Alchemy.t(:link_title), class: "control-label")
+          input = text_field_tag name, "", class: "link_title"
+          content_tag("div", label + input, class: "input text")
+        end
+
+        def target_select
+          name = "#{type}_link_target"
+          label = label_tag(name, Alchemy.t("Open Link in"), class: "control-label")
+          select = select_tag(name, options_for_select(Alchemy::Page.link_target_options, @target), class: "link_target")
+          content_tag("div", label + select, class: "input select")
+        end
+
+        def submit_button
+          content_tag("div", button_tag(Alchemy.t(:apply)), {class: "submit"})
+        end
+      end
+    end
+  end
+end

app/components/alchemy/admin/pages/external_tab.rb

@@ -0,0 +1,39 @@
+# frozen_string_literal: true
+
+module Alchemy
+  module Admin
+    module Pages
+      class ExternalTab < BaseLinkTab
+        def title
+          Alchemy.t("link_overlay_tab_label.external")
+        end
+
+        def type
+          :external
+        end
+
+        def fields
+          [
+            url_input,
+            title_input,
+            target_select
+          ]
+        end
+
+        def message
+          content_tag("h3", Alchemy.t(:enter_external_link)) +
+            content_tag("p", Alchemy.t(:external_link_notice_1)) +
+            content_tag("p", Alchemy.t(:external_link_notice_2))
+        end
+
+        private
+
+        def url_input
+          label = label_tag("external_link", Alchemy.t(:url), class: "control-label")
+          input = text_field_tag "external_link", ""
+          content_tag("div", label + input, class: "input text")
+        end
+      end
+    end
+  end
+end

app/components/alchemy/admin/pages/file_tab.rb

@@ -0,0 +1,48 @@
+# frozen_string_literal: true
+
+module Alchemy
+  module Admin
+    module Pages
+      class FileTab < BaseLinkTab
+        delegate :alchemy, to: :helpers
+
+        def title
+          Alchemy.t("link_overlay_tab_label.file")
+        end
+
+        def type
+          :file
+        end
+
+        def fields
+          [
+            attachment_select,
+            title_input,
+            target_select
+          ]
+        end
+
+        def message
+          content_tag("h3", Alchemy.t(:choose_file_to_link))
+        end
+
+        private
+
+        def attachments
+          @_attachments ||= Attachment.all.collect { |f|
+            [f.name, alchemy.download_attachment_path(id: f.id, name: f.slug)]
+          }
+        end
+
+        def attachment_select
+          label = label_tag("file_link", Alchemy.t(:file), class: "control-label")
+          select = select_tag "file_link",
+            options_for_select(attachments),
+            prompt: Alchemy.t("Please choose"),
+            is: "alchemy-select"
+          content_tag("div", label + select, class: "input select")
+        end
+      end
+    end
+  end
+end

app/components/alchemy/admin/pages/internal_tab.rb

@@ -0,0 +1,50 @@
+# frozen_string_literal: true
+
+module Alchemy
+  module Admin
+    module Pages
+      class InternalTab < BaseLinkTab
+        def title
+          Alchemy.t("link_overlay_tab_label.internal")
+        end
+
+        def type
+          :internal
+        end
+
+        def fields
+          [
+            page_select,
+            dom_id_select,
+            title_input,
+            target_select
+          ]
+        end
+
+        def message
+          content_tag("h3", Alchemy.t(:internal_link_headline)) +
+            content_tag("p", Alchemy.t(:internal_link_page_elements_explanation))
+        end
+
+        private
+
+        def page
+          @_page ||= @url ? Alchemy::Page.find_by(urlname: URI(@url).path[1..]) : nil
+        end
+
+        def dom_id_select
+          label = label_tag("element_anchor", Alchemy.t(:anchor), class: "control-label")
+          input = text_field_tag("element_anchor", nil, {id: "element_anchor", class: "alchemy_selectbox full_width", disabled: true, placeholder: Alchemy.t("Select a page first")})
+          content_tag("div", label + input, class: "input select")
+        end
+
+        def page_select
+          label = label_tag("internal_link", Alchemy.t(:page), class: "control-label")
+          input = text_field_tag("internal_link", page ? @url : "", id: "internal_link")
+          page_select = render Alchemy::Admin::PageSelect.new(page, allow_clear: true).with_content(input)
+          content_tag("div", label + page_select, class: "input select")
+        end
+      end
+    end
+  end
+end

app/controllers/alchemy/admin/pages_controller.rb

@@ -164,16 +164,6 @@ def destroy
 
       def link
         @url = params[:url]
-        @page = nil
-
-        if @url
-          uri = URI(@url)
-          @page = Alchemy::Page.find_by(urlname: uri.path[1..])
-        end
-
-        @attachments = Attachment.all.collect { |f|
-          [f.name, download_attachment_path(id: f.id, name: f.slug)]
-        }
       end
 
       def fold