From 3b2c4dee49c1b744e0571bc942b3ab8fccc58075 Mon Sep 17 00:00:00 2001
From: cagataycivici <cagatay.civici@gmail.com>
Date: Tue, 12 Feb 2019 16:51:28 +0300
Subject: [PATCH] Initiated Advanced FileUploader

---
 public/upload.php                        |   1 +
 src/AppMenu.vue                          |   2 +-
 src/assets/styles/app.scss               |   5 +
 src/assets/styles/primevue.css           |   1 +
 src/components/fileupload/FileUpload.css |  93 ++++++++
 src/components/fileupload/FileUpload.vue | 282 +++++++++++++++++++++++
 src/main.js                              |   6 +-
 src/router.js                            |   5 +
 src/views/fileupload/FileUploadDemo.vue  |  25 ++
 src/views/toast/ToastDemo.vue            |   5 -
 10 files changed, 417 insertions(+), 8 deletions(-)
 create mode 100644 public/upload.php
 create mode 100644 src/components/fileupload/FileUpload.css
 create mode 100644 src/components/fileupload/FileUpload.vue
 create mode 100644 src/views/fileupload/FileUploadDemo.vue

diff --git a/public/upload.php b/public/upload.php
new file mode 100644
index 000000000..c3d453155
--- /dev/null
+++ b/public/upload.php
@@ -0,0 +1 @@
+<?php echo '<p>Fake Upload Process</p>'; ?> 
\ No newline at end of file
diff --git a/src/AppMenu.vue b/src/AppMenu.vue
index aa184f3a1..dcc468f7a 100644
--- a/src/AppMenu.vue
+++ b/src/AppMenu.vue
@@ -89,7 +89,7 @@
             </a>
             <div :class="{'submenuhide': activeMenuIndex !== 5, 'submenushow': activeMenuIndex === 5}">
                 <div>
-                    <router-link to="/">&#9679; Link</router-link>
+                    <router-link to="/fileupload">&#9679; Upload</router-link>
                 </div>
             </div>
 
diff --git a/src/assets/styles/app.scss b/src/assets/styles/app.scss
index d1afcd931..94da5c418 100644
--- a/src/assets/styles/app.scss
+++ b/src/assets/styles/app.scss
@@ -1077,4 +1077,9 @@ pre[class*="language-"] {
             }
         }
     }
+}
+
+.p-toast.p-toast-topright,
+.p-toast.p-toast-topleft {
+    top: 100px;
 }
\ No newline at end of file
diff --git a/src/assets/styles/primevue.css b/src/assets/styles/primevue.css
index 70ad57e5b..49ec75581 100644
--- a/src/assets/styles/primevue.css
+++ b/src/assets/styles/primevue.css
@@ -8,6 +8,7 @@
 @import '../../components/dialog/Dialog.css';
 @import '../../components/dropdown/Dropdown.css';
 @import '../../components/fieldset/Fieldset.css';
+@import '../../components/fileupload/FileUpload.css';
 @import '../../components/inputtext/InputText.css';
 @import '../../components/inputswitch/InputSwitch.css';
 @import '../../components/listbox/Listbox.css';
diff --git a/src/components/fileupload/FileUpload.css b/src/components/fileupload/FileUpload.css
new file mode 100644
index 000000000..441fc46b0
--- /dev/null
+++ b/src/components/fileupload/FileUpload.css
@@ -0,0 +1,93 @@
+/*
+ * FileUpload
+ */
+ .p-fileupload-buttonbar .p-fileupload-choose.p-disabled input {
+    cursor: default;
+}
+
+.p-fileupload-buttonbar {
+    padding: .5em;
+    border-bottom: 0 none;
+}
+
+.p-fileupload-buttonbar .p-button {
+    vertical-align: middle;
+    margin-right: .25em;
+}
+
+.p-fileupload-content {
+    padding: 1em;
+    position: relative;
+    transition: border-color .3s;
+}
+
+.p-fileupload-content.p-fileupload-highlight {
+    border-color: #156090;
+}
+
+.p-fileupload-files img {
+    border: none;
+}
+
+.p-fileupload-files {
+    display: table;
+}
+
+.p-fileupload-row {
+    display: table-row;
+}
+
+.p-fileupload-row > div {
+    display: table-cell;
+    padding: .5em 1em;
+    vertical-align: middle;
+}
+
+.p-fileupload-content .p-progressbar {
+    width: 100%;
+    position: absolute;
+    top: 1px;
+    left: 0;
+    height: .25em;
+    border: 0 none;
+}
+
+.p-fileupload-content .p-progressbar-value {
+    -moz-border-radius: 0;
+    -webkit-border-radius: 0;
+    border-radius: 0;
+    border: 0 none;
+}
+
+/* Simple */
+.p-fileupload-choose {
+    position: relative;
+    overflow: hidden;
+}
+
+.p-fileupload-choose input[type=file] {
+    position: absolute;
+    top: 0;
+    right: 0;
+    margin: 0;
+    opacity: 0;
+    min-height: 100%;
+    font-size: 100px;
+    text-align: right;
+    filter: alpha(opacity=0);
+    direction: ltr;
+    cursor: pointer;
+}
+
+.p-fileupload-choose.p-fileupload-choose-selected input[type=file] {
+    display: none;
+}
+
+/* p-fluid */
+.p-fluid .p-fileupload .p-button {
+    width: auto;
+}
+
+.p-fluid .p-fileupload-content .p-button-icon-only {
+    width: 2em;
+}
\ No newline at end of file
diff --git a/src/components/fileupload/FileUpload.vue b/src/components/fileupload/FileUpload.vue
new file mode 100644
index 000000000..dc40feac8
--- /dev/null
+++ b/src/components/fileupload/FileUpload.vue
@@ -0,0 +1,282 @@
+<template>
+    <div class="p-fileupload p-component" v-if="isAdvanced">
+        <div class="p-fileupload-buttonbar">
+            <span icon="pi pi-plus" :class="advancedChooseButtonClass">
+                <input ref="fileInput" type="file" @change="onFileSelect" @focus="onFocus" @blur="onBlur" 
+                    :multiple="multiple" :accept="accept" :disabled="disabled" />
+                <span class="p-button-icon p-button-icon-left p-clickable pi pi-fw pi-plus"></span>
+                <span class="p-button-text p-clickable">{{chooseLabel}}</span>
+            </span>  
+            <FileUploadButton :label="uploadLabel" icon="pi pi-upload" @click="upload" :disabled="disabled || !hasFiles" />
+            <FileUploadButton :label="cancelLabel" icon="pi pi-times" @click="clear" :disabled="disabled || !hasFiles" />
+        </div>
+        <div ref="content" class="p-fileupload-content" @dragenter="onDragEnter" @dragover="onDragOver" @dragleave="onDragLeave" @drop="onDrop">
+            <FileUploadProgressBar :value="progress" v-if="hasFiles" />
+            <FileUploadMessage v-for="msg of messages" :severity="error" :key="msg">{{msg}}</FileUploadMessage>
+            <div class="p-fileupload-files" v-if="hasFiles">
+                <div class="p-fileupload-row" v-for="(file, index) of files" :key="file.name + file.type + file.size">
+                    <div v-if="isImage(file)">
+                        <img role="presentation" :alt="file.name" :src="file.objectURL" :width="previewWidth" />
+                    </div>
+                    <div>{{file.name}}</div>
+                    <div>{{formatSize(file.size)}}</div>
+                    <div>
+                        <Button type="button" icon="pi pi-times" @click="remove(index)" />
+                    </div>
+                </div>
+            </div>  
+        </div>
+    </div>
+</template>
+
+<script>
+import Button from '../button/Button';
+import ProgressBar from '../progressbar/ProgressBar';
+import Message from '../message/Message';
+
+export default {
+    props: {
+        name: {
+            type: String,
+            default: null
+        },
+        url: {
+            type: String,
+            default: null
+        },
+        mode: {
+            type: String,
+            default: 'advanced'
+        },
+        accept: {
+            type: String,
+            default: null
+        },
+        disabled: {
+            type: Boolean,
+            default: false
+        },
+        auto: {
+            type: Boolean,
+            default: false
+        },
+        maxFileSize: {
+            type: Number,
+            default: null
+        },
+        multiple: {
+            type: Boolean,
+            default: false
+        },
+        invalidFileSizeMessage: {
+            type: String,
+            default: '{0}: Invalid file size, maximum upload size is {1}.'
+        },
+        withCredentials: {
+            type: Boolean,
+            default: false
+        },
+        previewWidth: {
+            type: Number,
+            default: 50
+        },
+        chooseLabel: {
+            type: String,
+            default: 'Choose'  
+        },
+        uploadLabel: {
+            type: String,
+            default: 'Upload'  
+        },
+        cancelLabel: {
+            type: String,
+            default: 'Cancel'  
+        }
+    },
+    data() {
+        return {
+            files: null, 
+            messages: null,
+            focused: false,
+            progress: null
+        }
+    },
+    methods: {
+        onFileSelect(event) {
+            this.messages = [];
+            this.files = this.files || [];
+            let files = event.dataTransfer ? event.dataTransfer.files : event.target.files;
+            for (let file of files) {
+                if (!this.isFileSelected(file)) {
+                    if (this.validate(file)) {
+                        if (this.isImage(file)) {
+                            file.objectURL = window.URL.createObjectURL(file);
+                        }
+                        this.files.push(file);
+                    }
+                }
+            }
+
+            if (this.auto) {
+                this.upload();
+            }
+
+            this.$emit('select', {originalEvent: event, files: files});            
+            this.clearInputElement();
+            
+            if (this.mode === 'basic') {
+                this.$refs.fileInput.style.display = 'none';
+            }
+        },
+        upload() {
+            this.messages = [];
+            let xhr = new XMLHttpRequest();
+            let formData = new FormData();
+
+            this.$emit('before-upload', {
+                'xhr': xhr,
+                'formData': formData 
+            });
+            
+            for (let file of this.files) {
+                formData.append(this.name, file, file.name);
+            }
+
+            xhr.upload.addEventListener('progress', (event) => {
+                if (event.lengthComputable) {
+                    this.progress = Math.round((event.loaded * 100) / event.total);
+                }
+
+                this.$emit('progress', {
+                    originalEvent: event, 
+                    progress: this.progress
+                });
+            });
+
+            xhr.onreadystatechange = () => {
+                if (xhr.readyState === 4) {
+                    this.progress = 0;
+                    
+                    if (xhr.status >= 200 && xhr.status < 300) {
+                        this.$emit('upload', {
+                            xhr: xhr, 
+                            files: this.files
+                        });
+                    }
+                    else {
+                        this.$emit('error', {
+                            xhr: xhr, 
+                            files: this.files
+                        });
+                    }
+
+                    this.clear();
+                }
+            };
+        
+            xhr.open('POST', this.url, true);
+            
+            this.$emit('before-send', {
+                'xhr': xhr,
+                'formData': formData 
+            });
+
+            xhr.withCredentials = this.withCredentials;
+
+            xhr.send(formData);
+        },
+        clear() {
+            this.files = null;
+            this.$emit('clear');
+            this.clearInputElement();
+        },
+        onFocus() {
+            this.focused = true;
+        },
+        onBlur() {
+            this.focused = false;
+        },
+        isFileSelected(file) {
+            if (this.files && this.files.length) {
+                for (let sFile of this.files) {
+                    if ((sFile.name + sFile.type + sFile.size) === (file.name + file.type + file.size))
+                        return true;
+                }
+            } 
+            
+            return false;
+        },
+        validate(file) {
+            if (this.maxFileSize && file.size > this.maxFileSize) {
+                this.messages.push[this.invalidFileSizeMessage.replace('{0}', file.name).replace('{0}', this.formatSize(this.maxFileSize))];
+                return false;
+            }
+            
+            return true;
+        },
+        onDragEnter() {
+
+        },
+        onDragLeave() {
+
+        },
+        onDragOver() {
+
+        },
+        onDrop() {
+
+        },
+        remove(index) {
+            this.clearInputElement();
+            this.state.files.slice(index, 1);
+        },
+        isImage(file) {
+            return /^image\//.test(file.type);
+        },
+        clearInputElement() {
+            this.$refs.fileInput.value = '';
+            if (this.mode === 'basic') {
+                this.$refs.fileInput.style.display = 'inline';
+            }
+        },
+        formatSize(bytes) {
+            if (bytes === 0) {
+                return '0 B';
+            }
+            let k = 1000,
+            dm = 3,
+            sizes = ['B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'],
+            i = Math.floor(Math.log(bytes) / Math.log(k));
+            
+            return parseFloat((bytes / Math.pow(k, i)).toFixed(dm)) + ' ' + sizes[i];
+        }
+    },
+    computed: {
+        isAdvanced() {
+            return this.mode === 'advanced';
+        },
+        isBasic() {
+            return this.mode === 'basic';
+        },
+        advancedChooseButtonClass() {
+            return ['p-button p-fileupload-choose p-component p-button-text-icon-left', {
+                    'p-disabled': this.disabled,
+                    'p-focus': this.focused
+                }
+            ];
+        },
+        hasFiles() {
+            return this.files && this.files.length > 0;
+        }
+    },
+    components: {
+        'FileUploadButton': Button,
+        'FileUploadProgressBar': ProgressBar,
+        'FileUploadMessage': Message
+    },
+}
+</script>
+
+<style>
+
+</style>
diff --git a/src/main.js b/src/main.js
index 1573fd03d..eb6740c46 100644
--- a/src/main.js
+++ b/src/main.js
@@ -12,10 +12,11 @@ import Chips from './components/chips/Chips';
 import Dialog from './components/dialog/Dialog';
 import Dropdown from './components/dropdown/Dropdown';
 import Editor from './components/editor/Editor';
+import Fieldset from './components/fieldset/Fieldset';
+import FileUpload from './components/fileupload/FileUpload';
 import FullCalendar from './components/fullcalendar/FullCalendar';
 import InputSwitch from './components/inputswitch/InputSwitch';
 import InputText from './components/inputtext/InputText';
-import Fieldset from './components/fieldset/Fieldset';
 import Listbox from './components/listbox/Listbox';
 import Message from './components/message/Message';
 import MultiSelect from './components/multiselect/MultiSelect';
@@ -58,11 +59,12 @@ Vue.component('Chips', Chips);
 Vue.component('Dialog', Dialog);
 Vue.component('Dropdown', Dropdown);
 Vue.component('Editor', Editor);
+Vue.component('Fieldset', Fieldset);
+Vue.component('FileUpload', FileUpload);
 Vue.component('FullCalendar', FullCalendar);
 Vue.component('InputSwitch', InputSwitch);
 Vue.component('InputText', InputText);
 Vue.component('Listbox', Listbox);
-Vue.component('Fieldset', Fieldset);
 Vue.component('Message', Message);
 Vue.component('MultiSelect', MultiSelect);
 Vue.component('OverlayPanel', OverlayPanel);
diff --git a/src/router.js b/src/router.js
index 781469419..273c09626 100644
--- a/src/router.js
+++ b/src/router.js
@@ -101,6 +101,11 @@ export default new Router({
         name: 'fieldset',
         component: () => import('./views/fieldset/FieldsetDemo.vue')
     },
+    {
+        path: '/fileupload',
+        name: 'fileupload',
+        component: () => import('./views/fileupload/FileUploadDemo.vue')
+    },
     {
         path: '/flexgrid',
         name: 'flexgrid',
diff --git a/src/views/fileupload/FileUploadDemo.vue b/src/views/fileupload/FileUploadDemo.vue
new file mode 100644
index 000000000..598572be2
--- /dev/null
+++ b/src/views/fileupload/FileUploadDemo.vue
@@ -0,0 +1,25 @@
+<template>
+    <div>
+        <div class="content-section introduction">
+            <div class="feature-intro">
+                <h1>FileUpload</h1>
+                <p>FileUpload is an advanced uploader with dragdrop support, multi file uploads, auto uploading, progress tracking and validations.</p>
+            </div>
+        </div>
+
+        <div class="content-section implementation">
+            <h3>Advanced</h3>
+            <FileUpload name="demo[]" url="http://192.168.1.110:4000/upload" @upload="onUpload" :multiple="true" accept="image/*" :maxFileSize="1000000" />
+        </div>
+    </div>
+</template>
+
+<script>
+export default {
+    methods: {
+        onUpload() {
+            this.$toast.add({severity: 'info', summary: 'Success', detail: 'File Uploaded'});
+        }
+    }
+}
+</script>
\ No newline at end of file
diff --git a/src/views/toast/ToastDemo.vue b/src/views/toast/ToastDemo.vue
index 534b99a15..83f7a0810 100644
--- a/src/views/toast/ToastDemo.vue
+++ b/src/views/toast/ToastDemo.vue
@@ -101,9 +101,4 @@ export default {
 button.p-button {
     margin-right: .5em;
 }
-
-.p-toast.p-toast-topright,
-.p-toast.p-toast-topleft {
-    top: 100px;
-}
 </style>