add RIS download

src/components/ArticleFooter.vue

@@ -23,7 +23,7 @@
           <v-btn depressed x-small class="toolbar-button" rounded tabindex="0" @click="copy_citation"><br>
             <v-icon x-small icon>content_copy</v-icon>  <span class = "button-text">Kopier</span>
           </v-btn>
-                    <v-btn depressed x-small class="toolbar-button" rounded tabindex="0" @click="close_citation_dialog"><br>
+                    <v-btn depressed x-small class="toolbar-button" rounded tabindex="0" @click="download_ris"><br>
             <v-icon x-small icon>get_app</v-icon> <span class = "button-text">Last ned</span>
           </v-btn>
                     <v-btn depressed x-small class="toolbar-button" rounded tabindex="0" @click="close_citation_dialog"><br>
@@ -67,17 +67,20 @@ export default {
     create_link() {
       return host + this.article.dictionary + '/' + this.article.article_id + '/' + encodeURIComponent(this.article.lemmas[0].lemma)
     },
-    create_citation() {
+    get_citation_info() {
       let date = new Date();
       let dd = (date.getDate() < 10? '0' : '') + date.getDate()
       let mm = (date.getMonth() < 9? '0' : '') + (date.getMonth()+1)
       let yyyy = date.getFullYear()
       let link = this.create_link()
-      let citation = {"bm": `«${this.article.lemmas[0].lemma}». I: <em>Bokmålsordboka.</em> Språkrådet og Universitetet i Bergen. &lt;<a href='${link}'>${link}</a>&gt; (hentet ${dd}.${mm}.${yyyy}).`,
-                      "nn":`«${this.article.lemmas[0].lemma}». I: <em>Nynorskordboka.</em> Språkrådet og Universitetet i Bergen. &lt;<a href='${link}'>${link}</a>&gt;  (henta ${dd}.${mm}.${yyyy}).`
+      let lemma = this.article.lemmas[0].lemma
+      return [lemma, dd, mm, yyyy, link]
+    },
+    create_citation() {
+      const [lemma, dd, mm, yyyy, link] = this.get_citation_info()
+      let citation = {"bm": `«${lemma}». I: <em>Bokmålsordboka.</em> Språkrådet og Universitetet i Bergen. &lt;<a href='${link}'>${link}</a>&gt; (hentet ${dd}.${mm}.${yyyy}).`,
+                      "nn":`«${lemma}». I: <em>Nynorskordboka.</em> Språkrådet og Universitetet i Bergen. &lt;<a href='${link}'>${link}</a>&gt;  (henta ${dd}.${mm}.${yyyy}).`
                       }[this.article.dictionary]
-
-
       return citation
     },
     copy_link() {
@@ -92,8 +95,19 @@ export default {
 
     close_citation_dialog() {
       this.citation_dialog = false
-    }
-
+    },
+    download_ris() {
+      const [lemma, dd, mm, yyyy, link] = this.get_citation_info()
+      const a = document.createElement("a")
+      a.style = "display: none"
+      a.setAttribute("download", `${lemma}_${this.article.dictionary}.ris`)
+      const dict = {"bm":"Bokmålsordboka", "nn": "Nynorskordboka"}[this.article.dictionary]
+      const text = `TY  - DICT\nTI  - ${lemma}\nT2  - ${dict}\nPB  - Språkrådet og Universitetet i Bergen\nUR  - ${link}\nY2  - ${yyyy}/${mm}/${dd}/\nER  - `
+      a.setAttribute('href', 'data:application/x-research-info-systems;charset=utf-8,' + encodeURIComponent(text));
+      document.body.appendChild(a)
+      a.click()
+      document.body.removeChild(a)
+    },
   }
 }