Implements TemplateDropdown class to create custom template dropdowns

Also License dropdown has been ported to use our GL dropdown instead of Select2.
Fixes tests to make it work with current implementation

6 files changed, 104 insertions, 87 deletions

diff --git a/app/assets/javascripts/blob/blob_gitignore_selector.js.coffee b/app/assets/javascripts/blob/blob_gitignore_selector.js.coffee
index cc8a497d081..8d0e3f363d1 100644
--- a/app/assets/javascripts/blob/blob_gitignore_selector.js.coffee
+++ b/app/assets/javascripts/blob/blob_gitignore_selector.js.coffee
@@ -1,58 +1,5 @@
-class @BlobGitignoreSelector
-  constructor: (opts) ->
-    {
-      @dropdown
-      @editor
-      @$wrapper        = @dropdown.closest('.gitignore-selector')
-      @$filenameInput  = $('#file_name')
-      @data           = @dropdown.data('filenames')
-    } = opts
+#= require blob/template_selector
 
-    @dropdown.glDropdown(
-      data: @data,
-      filterable: true,
-      selectable: true,
-      search:
-        fields: ['name']
-      clicked: @onClick
-      text: (gitignore) ->
-        gitignore.name
-    )
-
-    @toggleGitignoreSelector()
-    @bindEvents()
-
-  bindEvents: ->
-    @$filenameInput
-      .on 'keyup blur', (e) =>
-        @toggleGitignoreSelector()
-
-  toggleGitignoreSelector: ->
-    filename = @$filenameInput.val() or $('.editor-file-name').text().trim()
-    @$wrapper.toggleClass 'hidden', filename isnt '.gitignore'
-
-  onClick: (item, el, e) =>
-    e.preventDefault()
-    @requestIgnoreFile(item.name)
-
-  requestIgnoreFile: (name) ->
-    Api.gitignoreText name, @requestIgnoreFileSuccess.bind(@)
-
-  requestIgnoreFileSuccess: (gitignore) ->
-    @editor.setValue(gitignore.content, 1)
-    @editor.focus()
-
-class @BlobGitignoreSelectors
-  constructor: (opts) ->
-    {
-      @$dropdowns = $('.js-gitignore-selector')
-      @editor
-    } = opts
-
-    @$dropdowns.each (i, dropdown) =>
-      $dropdown = $(dropdown)
-
-      new BlobGitignoreSelector(
-        dropdown: $dropdown,
-        editor: @editor
-      )
+class @BlobGitignoreSelector extends TemplateSelector
+  requestFile: (query) ->
+    Api.gitignoreText query.name, @requestFileSuccess.bind(@)
diff --git a/app/assets/javascripts/blob/blob_gitignore_selectors.js.coffee b/app/assets/javascripts/blob/blob_gitignore_selectors.js.coffee
new file mode 100644
index 00000000000..a719ba25122
--- /dev/null
+++ b/app/assets/javascripts/blob/blob_gitignore_selectors.js.coffee
@@ -0,0 +1,17 @@
+class @BlobGitignoreSelectors
+  constructor: (opts) ->
+    {
+      @$dropdowns = $('.js-gitignore-selector')
+      @editor
+    } = opts
+
+    @$dropdowns.each (i, dropdown) =>
+      $dropdown = $(dropdown)
+
+      new BlobGitignoreSelector(
+        pattern: /(.gitignore)/,
+        data: $dropdown.data('data'),
+        wrapper: $dropdown.closest('.js-gitignore-selector-wrap'),
+        dropdown: $dropdown,
+        editor: @editor
+      )
diff --git a/app/assets/javascripts/blob/blob_license_selector.js.coffee b/app/assets/javascripts/blob/blob_license_selector.js.coffee
index e17eaa75dc1..a3cc8dd844c 100644
--- a/app/assets/javascripts/blob/blob_license_selector.js.coffee
+++ b/app/assets/javascripts/blob/blob_license_selector.js.coffee
@@ -1,30 +1,9 @@
-class @BlobLicenseSelector
-  licenseRegex: /^(.+\/)?(licen[sc]e|copying)($|\.)/i
+#= require blob/template_selector
 
-  constructor: (editor) ->
-    @$licenseSelector = $('.js-license-selector')
-    $fileNameInput = $('#file_name')
+class @BlobLicenseSelector extends TemplateSelector
+  requestFile: (query) ->
+    data =
+      project: @dropdown.data('project')
+      fullname: @dropdown.data('fullname')
 
-    initialFileNameValue = if $fileNameInput.length
-      $fileNameInput.val()
-    else if $('.editor-file-name').length
-      $('.editor-file-name').text().trim()
-
-    @toggleLicenseSelector(initialFileNameValue)
-
-    if $fileNameInput
-      $fileNameInput.on 'keyup blur', (e) =>
-        @toggleLicenseSelector($(e.target).val())
-
-    $('select.license-select').on 'change', (e) ->
-      data =
-        project: $(this).data('project')
-        fullname: $(this).data('fullname')
-      Api.licenseText $(this).val(), data, (license) ->
-        editor.setValue(license.content, -1)
-
-  toggleLicenseSelector: (fileName) =>
-    if @licenseRegex.test(fileName)
-      @$licenseSelector.show()
-    else
-      @$licenseSelector.hide()
+    Api.licenseText query.id, data, @requestFileSuccess.bind(@)
diff --git a/app/assets/javascripts/blob/blob_license_selectors.js.coffee b/app/assets/javascripts/blob/blob_license_selectors.js.coffee
new file mode 100644
index 00000000000..68438733108
--- /dev/null
+++ b/app/assets/javascripts/blob/blob_license_selectors.js.coffee
@@ -0,0 +1,17 @@
+class @BlobLicenseSelectors
+  constructor: (opts) ->
+    {
+      @$dropdowns = $('.js-license-selector')
+      @editor
+    } = opts
+
+    @$dropdowns.each (i, dropdown) =>
+      $dropdown = $(dropdown)
+
+      new BlobLicenseSelector(
+        pattern: /^(.+\/)?(licen[sc]e|copying)($|\.)/i,
+        data: $dropdown.data('data'),
+        wrapper: $dropdown.closest('.js-license-selector-wrap'),
+        dropdown: $dropdown,
+        editor: @editor
+      )
diff --git a/app/assets/javascripts/blob/edit_blob.js.coffee b/app/assets/javascripts/blob/edit_blob.js.coffee
index 79141e768b8..636f909dbd0 100644
--- a/app/assets/javascripts/blob/edit_blob.js.coffee
+++ b/app/assets/javascripts/blob/edit_blob.js.coffee
@@ -12,8 +12,9 @@ class @EditBlob
       $("#file-content").val(@editor.getValue())
 
     @initModePanesAndLinks()
-    new BlobLicenseSelector(@editor)
-    new BlobGitignoreSelectors(editor: @editor)
+
+    new BlobLicenseSelectors { @editor }
+    new BlobGitignoreSelectors { @editor }
 
   initModePanesAndLinks: ->
     @$editModePanes = $(".js-edit-mode-pane")
diff --git a/app/assets/javascripts/blob/template_selector.js.coffee b/app/assets/javascripts/blob/template_selector.js.coffee
new file mode 100644
index 00000000000..e76e303189d
--- /dev/null
+++ b/app/assets/javascripts/blob/template_selector.js.coffee
@@ -0,0 +1,56 @@
+class @TemplateSelector
+  constructor: (opts = {}) ->
+    {
+      @dropdown,
+      @data,
+      @pattern,
+      @wrapper,
+      @editor,
+      @fileEndpoint,
+      @$input = $('#file_name')
+    } = opts
+
+    @buildDropdown()
+    @bindEvents()
+    @onFilenameUpdate()
+
+  buildDropdown: ->
+    @dropdown.glDropdown(
+      data: @data,
+      filterable: true,
+      selectable: true,
+      search:
+        fields: ['name']
+      clicked: @onClick
+      text: (item) ->
+        item.name
+    )
+
+  bindEvents: ->
+    @$input.on('keyup blur', (e) =>
+      @onFilenameUpdate()
+    )
+
+  onFilenameUpdate: ->
+    return unless @$input.length
+
+    filenameMatches = @pattern.test(@$input.val().trim())
+
+    if not filenameMatches
+      @wrapper.addClass('hidden')
+      return
+
+    @wrapper.removeClass('hidden')
+
+  onClick: (item, el, e) =>
+    e.preventDefault()
+    @requestFile(item)
+
+  requestFile: (item) ->
+    # To be implemented on the extending class
+    # e.g.
+    # Api.gitignoreText item.name, @requestFileSuccess.bind(@)
+
+  requestFileSuccess: (file) ->
+    @editor.setValue(file.content, 1)
+    @editor.focus()