UBERF-8180 Text file preview (#6633)

Signed-off-by: Alexander Onnikov <Alexander.Onnikov@xored.com>

models/view/src/index.ts

@@ -647,7 +647,7 @@ export function createModel (builder: Builder): void {
     presentation.class.FilePreviewExtension,
     core.space.Model,
     {
-      contentType: ['application/pdf', 'application/json', 'text/*'],
+      contentType: ['application/pdf'],
       alignment: 'float',
       component: view.component.PDFViewer,
       extension: presentation.extension.FilePreviewExtension
@@ -655,6 +655,18 @@ export function createModel (builder: Builder): void {
     view.extension.PDF
   )
 
+  builder.createDoc(
+    presentation.class.FilePreviewExtension,
+    core.space.Model,
+    {
+      contentType: ['application/json', 'text/*'],
+      alignment: 'float',
+      component: view.component.TextViewer,
+      extension: presentation.extension.FilePreviewExtension
+    },
+    view.extension.Text
+  )
+
   createAction(
     builder,
     {

models/view/src/plugin.ts

@@ -88,7 +88,8 @@ export default mergeIds(viewId, view, {
     AudioViewer: '' as AnyComponent,
     ImageViewer: '' as AnyComponent,
     VideoViewer: '' as AnyComponent,
-    PDFViewer: '' as AnyComponent
+    PDFViewer: '' as AnyComponent,
+    TextViewer: '' as AnyComponent
   },
   string: {
     Table: '' as IntlString,
@@ -150,6 +151,7 @@ export default mergeIds(viewId, view, {
     Audio: '' as Ref<FilePreviewExtension>,
     Image: '' as Ref<FilePreviewExtension>,
     Video: '' as Ref<FilePreviewExtension>,
-    PDF: '' as Ref<FilePreviewExtension>
+    PDF: '' as Ref<FilePreviewExtension>,
+    Text: '' as Ref<FilePreviewExtension>
   }
 })

packages/presentation/src/components/FilePreview.svelte

@@ -14,7 +14,14 @@
 -->
 <script lang="ts">
   import { type Blob, type Ref } from '@hcengineering/core'
-  import { Button, Component, Label, resizeObserver, deviceOptionsStore as deviceInfo } from '@hcengineering/ui'
+  import {
+    Button,
+    Component,
+    Label,
+    resizeObserver,
+    deviceOptionsStore as deviceInfo,
+    Loading
+  } from '@hcengineering/ui'
 
   import presentation from '../plugin'
 
@@ -34,9 +41,11 @@
   let minHeight: number | undefined
   $: parentHeight = ($deviceInfo.docHeight * 80) / 100
 
+  let loading = true
   let previewType: FilePreviewExtension | undefined = undefined
   $: void getPreviewType(contentType, $previewTypes).then((res) => {
     previewType = res
+    loading = false
   })
 
   const updateHeight = (
@@ -91,6 +100,8 @@
       </div>
     {:else if previewType !== undefined}
       <Component is={previewType.component} props={{ value: file, name, contentType, metadata, ...props, fit }} />
+    {:else if loading}
+      <Loading />
     {:else}
       <div class="flex-col items-center flex-gap-3">
         <Label label={presentation.string.ContentTypeNotSupported} />

plugins/view-resources/src/components/viewer/TextViewer.svelte

@@ -0,0 +1,72 @@
+<!--
+// Copyright © 2024 Hardcore Engineering Inc.
+//
+// Licensed under the Eclipse Public License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License. You may
+// obtain a copy of the License at https://www.eclipse.org/legal/epl-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//
+// See the License for the specific language governing permissions and
+// limitations under the License.
+-->
+<script lang="ts">
+  import { type Blob, type Ref } from '@hcengineering/core'
+  import { getFileUrl } from '@hcengineering/presentation'
+  import { Loading, Scroller } from '@hcengineering/ui'
+
+  export let value: Ref<Blob>
+  export let name: string
+  export let fit: boolean = false
+
+  $: void fetchFile(value, name)
+
+  let loading = true
+  let text: string | undefined = undefined
+
+  async function fetchFile (value: Ref<Blob>, name: string): Promise<void> {
+    loading = true
+
+    const src = getFileUrl(value, name)
+    const res = await fetch(src)
+    text = await res.text()
+
+    loading = false
+  }
+</script>
+
+{#if loading}
+  <div class="flex-center w-full h-full clear-mins">
+    <Loading />
+  </div>
+{:else}
+  <div class="container h-full w-full" class:fit>
+    <Scroller horizontal padding="0 1rem">
+      <pre class="select-text">{text}</pre>
+    </Scroller>
+  </div>
+{/if}
+
+<style lang="scss">
+  .container {
+    max-height: 80vh;
+
+    overflow: hidden;
+    border: 1px solid var(--theme-button-border);
+    border-radius: 0.25rem;
+
+    &.fit {
+      min-height: 100%;
+    }
+    &:not(.fit) {
+      height: 80vh;
+      min-height: 20rem;
+    }
+  }
+
+  pre {
+    font-family: var(--mono-font);
+  }
+</style>

plugins/view-resources/src/index.ts

@@ -99,6 +99,7 @@ import AudioViewer from './components/viewer/AudioViewer.svelte'
 import ImageViewer from './components/viewer/ImageViewer.svelte'
 import VideoViewer from './components/viewer/VideoViewer.svelte'
 import PDFViewer from './components/viewer/PDFViewer.svelte'
+import TextViewer from './components/viewer/TextViewer.svelte'
 
 import { blobImageMetadata, blobVideoMetadata } from './blob'
 
@@ -295,7 +296,8 @@ export default async (): Promise<Resources> => ({
     AudioViewer,
     ImageViewer,
     VideoViewer,
-    PDFViewer
+    PDFViewer,
+    TextViewer
   },
   popup: {
     PositionElementAlignment