From d696aeda8813a43772d60610fd6e700f4210e38f Mon Sep 17 00:00:00 2001
From: cagataycivici <cagatay.civici@gmail.com>
Date: Sat, 8 Dec 2018 12:15:53 +0300
Subject: [PATCH] Initiated ListBox component

---
 src/AppMenu.vue                     |   1 +
 src/assets/styles/primevue.css      |   1 +
 src/components/listbox/ListBox.css  |  68 ++++++++++
 src/components/listbox/ListBox.vue  | 150 +++++++++++++++++++++
 src/components/utils/ObjectUtils.js | 201 ++++++++++++++++++++++++++++
 src/main.js                         |   2 +
 src/router.js                       |   5 +
 src/views/listbox/ListBoxDemo.vue   |  40 ++++++
 8 files changed, 468 insertions(+)
 create mode 100644 src/components/listbox/ListBox.css
 create mode 100644 src/components/listbox/ListBox.vue
 create mode 100644 src/components/utils/ObjectUtils.js
 create mode 100644 src/views/listbox/ListBoxDemo.vue

diff --git a/src/AppMenu.vue b/src/AppMenu.vue
index 8565ff775..f5f546110 100644
--- a/src/AppMenu.vue
+++ b/src/AppMenu.vue
@@ -9,6 +9,7 @@
             <div :class="{'submenuhide': activeMenuIndex !== 0, 'submenushow': activeMenuIndex === 0}">
                 <div>
                     <router-link to="/inputtext">&#9679; InputText</router-link>
+                    <router-link to="/listbox">&#9679; ListBox</router-link>
                 </div>
             </div>
 
diff --git a/src/assets/styles/primevue.css b/src/assets/styles/primevue.css
index a87c431ef..3e62abf94 100644
--- a/src/assets/styles/primevue.css
+++ b/src/assets/styles/primevue.css
@@ -1,3 +1,4 @@
 @import '../../components/common/Common.css';
 @import '../../components/inputtext/InputText.css';
+@import '../../components/listbox/ListBox.css';
 @import '../../components/button/Button.css';
\ No newline at end of file
diff --git a/src/components/listbox/ListBox.css b/src/components/listbox/ListBox.css
new file mode 100644
index 000000000..82bc81aa2
--- /dev/null
+++ b/src/components/listbox/ListBox.css
@@ -0,0 +1,68 @@
+.p-listbox {
+    padding: .25em;
+    width: 10em;
+}
+
+.p-listbox .p-listbox-list-wrapper {
+    overflow:auto;
+}
+
+.p-listbox .p-listbox-list {
+    list-style-type: none; 
+    margin: 0;
+    padding: 0;
+}
+
+.p-listbox .p-listbox-item {
+    padding: .25em;
+    border: 0 none;
+    cursor: pointer;
+    font-weight: normal;
+    margin-bottom: 1px;
+}
+
+.p-listbox .p-listbox-item > span {
+    vertical-align: middle;
+}
+
+.p-listbox .p-listbox-item:last-child {
+    margin-bottom: 0;
+}
+
+.p-listbox.p-disabled .p-listbox-item {
+    cursor: default;
+}
+
+.p-listbox-header {
+    margin-bottom: 0.3em;
+    padding: .125em .2em;
+    position: relative;
+}
+
+.p-listbox-header .p-checkbox {
+    display: inline-block;
+    vertical-align: middle;
+    cursor: pointer;
+}
+
+.p-listbox-header .p-listbox-filter-container {
+    display: inline-block;
+    vertical-align: middle;
+    position: relative;
+    width: 100%;
+}
+
+.p-listbox-header.p-listbox-header-w-checkbox .p-listbox-filter-container {
+    width: calc(100% - 2em);
+}
+
+.p-listbox-header .p-listbox-filter-container .p-listbox-filter-icon {
+    position: absolute;
+    top: .25em;
+    left: .25em;
+}
+
+.p-listbox-header .p-inputtext {
+    padding: .125em .125em .125em 1.25em;
+    width: 100%;
+}
\ No newline at end of file
diff --git a/src/components/listbox/ListBox.vue b/src/components/listbox/ListBox.vue
new file mode 100644
index 000000000..1a4862b44
--- /dev/null
+++ b/src/components/listbox/ListBox.vue
@@ -0,0 +1,150 @@
+<template>
+    <div class="p-listbox p-inputtext p-component">
+        <div class="p-listbox-list-wrapper">
+            <ul class="p-listbox-list">
+                <li v-for="option of options" tabindex="0" :class="['p-listbox-item', {'p-highlight': isSelected(option)}]" 
+                    :key="getOptionLabel(option)" @click="onOptionClick($event, option)" @touchend="onOptionTouchEnd()">
+                    {{getOptionLabel(option)}}
+                </li>
+            </ul>
+        </div>
+    </div>
+</template>
+
+<script>
+import ObjectUtils from '../utils/ObjectUtils';
+
+export default {
+    props: {
+        value: null,
+        options: Array,
+        disabled: Boolean,
+        dataKey: null,
+        multiple: Boolean,
+        metaKeySelection: Boolean,
+        filter: Boolean,
+        optionLabel: null,
+        optionValue: null
+    },
+    optionTouched: false,
+    methods: {
+        getOptionLabel(option) {
+            return ObjectUtils.resolveFieldData(option, this.optionLabel);
+        },
+        getOptionValue(option) {
+            return this.optionValue ? ObjectUtils.resolveFieldData(option, this.optionValue) : option;
+        },
+        onOptionClick(event, option) {
+            if (this.disabled) {
+                return;
+            }
+            
+            if(this.multiple)
+                this.onOptionClickMultiple(event, option);
+            else
+                this.onOptionClickSingle(event, option);
+                
+            this.optionTouched = false;
+        },
+        onOptionTouchEnd() {
+            if (this.disabled) {
+                return;
+            }
+        
+            this.optionTouched = true;
+        },
+        onOptionClickSingle(event, option) {
+            let selected = this.isSelected(option);
+            let valueChanged = false;
+            let value = null;
+            let metaSelection = this.optionTouched ? false : this.metaKeySelection;
+
+            if (metaSelection) {
+                let metaKey = (event.metaKey || event.ctrlKey);
+                
+                if (selected) {
+                    if (metaKey) {
+                        value = null;
+                        valueChanged = true;
+                    }
+                }
+                else {
+                    value = this.getOptionValue(option);
+                    valueChanged = true;
+                }
+            }
+            else {
+                value = selected ? null : this.getOptionValue(option);
+                valueChanged = true;
+            }
+
+            if (valueChanged) {
+                this.updateModel(event, value);
+            }
+        },
+        onOptionClickMultiple(event, option) {        
+            let selected = this.isSelected(option);
+            let valueChanged = false;
+            let value = null;
+            let metaSelection = this.optionTouched ? false : this.metaKeySelection;
+
+            if (metaSelection) {
+                let metaKey = (event.metaKey || event.ctrlKey);
+                
+                if (selected) {
+                    if(metaKey)
+                        value = this.removeOption(option);
+                    else
+                        value = [this.getOptionValue(option)];
+                    
+                    valueChanged = true;
+                }
+                else {
+                    value = (metaKey) ? this.value || [] : [];
+                    value = [...value, this.getOptionValue(option)];
+                    valueChanged = true;
+                }
+            }
+            else {
+                if (selected)
+                    value = this.removeOption(option);
+                else
+                    value = [...this.value || [], this.getOptionValue(option)];
+                
+                valueChanged = true;
+            }
+
+            if(valueChanged) {
+                this.updateModel(event, value);
+            }
+        },
+        isSelected(option) {
+            let selected = false;
+            let optionValue = this.getOptionValue(option);
+
+            if (this.multiple) {
+                if (this.value) {
+                    for (let val of this.value) {
+                        if (ObjectUtils.equals(val, optionValue, this.dataKey)) {
+                            selected = true;
+                            break;
+                        }
+                    }
+                }
+            }
+            else {
+                selected = ObjectUtils.equals(this.value, optionValue, this.dataKey);
+            }
+
+            return selected;
+        },
+        removeOption(option) {
+            return this.value.filter(val => !ObjectUtils.equals(val, this.getOptionValue(option), this.dataKey));
+        },
+        updateModel(event, value) {
+            this.$emit('input', value);
+            this.$emit('change', {originalEvent: event, value: value});
+        }
+    }
+}
+</script>
\ No newline at end of file
diff --git a/src/components/utils/ObjectUtils.js b/src/components/utils/ObjectUtils.js
new file mode 100644
index 000000000..f306637ab
--- /dev/null
+++ b/src/components/utils/ObjectUtils.js
@@ -0,0 +1,201 @@
+export default class ObjectUtils {
+    
+    static equals(obj1, obj2, field) {
+        if(field)
+            return (this.resolveFieldData(obj1, field) === this.resolveFieldData(obj2, field));
+        else
+            return this.equalsByValue(obj1, obj2);
+    }
+    
+    static equalsByValue(obj1, obj2) {
+        if (obj1 === null && obj2 === null) {
+            return true;
+        }
+        if (obj1 === null || obj2 === null) {
+            return false;
+        }
+
+        if (obj1 === obj2) {
+            delete obj1._$visited;
+            return true;
+        }
+
+        if (typeof obj1 === 'object' && typeof obj2 === 'object') {
+            obj1._$visited = true;
+            for (var p in obj1) {
+                if (p === "_$visited") continue;
+                if (obj1.hasOwnProperty(p) !== obj2.hasOwnProperty(p)) {
+                    return false;
+                }
+
+                switch (typeof (obj1[p])) {
+                    case 'object':
+                        if ((obj1[p] && obj1[p]._$visited) || !this.equals(obj1[p], obj2[p])) return false;
+                        break;
+
+                    case 'function':
+                        if (typeof (obj2[p]) === 'undefined' || (p !== 'compare' && obj1[p].toString() !== obj2[p].toString())) return false;
+                        break;
+
+                    default:
+                        if (obj1[p] !== obj2[p]) return false;
+                        break;
+                }
+            }
+
+            for (var pp in obj2) {
+                if (typeof (obj1[pp]) === 'undefined') return false;
+            }
+
+            delete obj1._$visited;
+            return true;
+        }
+
+        return false;
+    }
+    
+    static resolveFieldData(data, field) {
+        if(data && field) {
+            if(field.indexOf('.') === -1) {
+                return data[field];
+            }
+            else {
+                let fields = field.split('.');
+                let value = data;
+                for(var i = 0, len = fields.length; i < len; ++i) {
+                    value = value[fields[i]];
+                }
+                return value;
+            }
+        }
+        else {
+            return null;
+        }
+    }
+    static filter(value, fields, filterValue) {
+        var filteredItems=[];
+
+        if(value) {
+            for(let item of value) {
+                for(let field of fields) {
+                    if(String(this.resolveFieldData(item, field)).toLowerCase().indexOf(filterValue.toLowerCase()) > -1) {
+                        filteredItems.push(item);
+                        break;
+                    }
+                }
+            }
+        }
+
+        return filteredItems;
+    }
+
+    static reorderArray(value, from, to) {
+        let target;
+        if(value && (from !== to)) {
+            if(to >= value.length) {
+                target = to - value.length;
+                while((target--) + 1) {
+                    value.push(undefined);
+                }
+            }
+            value.splice(to, 0, value.splice(from, 1)[0]);
+        }
+    }
+    
+    static findIndexInList(value, list) {
+        let index = -1;
+        
+        if(list) {
+            for(let i = 0; i < list.length; i++) {
+                if(list[i] === value) {
+                    index = i;
+                    break;
+                }
+            }
+        }
+        
+        return index;
+    }
+
+    static filterConstraints = {
+
+        startsWith(value, filter) {
+            if(filter === undefined || filter === null || filter.trim() === '') {
+                return true;
+            }
+
+            if(value === undefined || value === null) {
+                return false;
+            }
+
+            let filterValue = filter.toLowerCase();
+            return value.toString().toLowerCase().slice(0, filterValue.length) === filterValue;
+        },
+
+        contains(value, filter) {
+            if(filter === undefined || filter === null || (typeof filter === 'string' && filter.trim() === '')) {
+                return true;
+            }
+
+            if(value === undefined || value === null) {
+                return false;
+            }
+            
+            return value.toString().toLowerCase().indexOf(filter.toLowerCase()) !== -1;
+        },
+
+        endsWith(value, filter) {
+            if(filter === undefined || filter === null || filter.trim() === '') {
+                return true;
+            }
+
+            if(value === undefined || value === null) {
+                return false;
+            }
+
+            let filterValue = filter.toString().toLowerCase();
+            return value.toString().toLowerCase().indexOf(filterValue, value.toString().length - filterValue.length) !== -1;
+        },
+        
+        equals(value, filter) {
+            if(filter === undefined || filter === null || (typeof filter === 'string' && filter.trim() === '')) {
+                return true;
+            }
+            
+            if(value === undefined || value === null) {
+                return false;
+            }
+            
+            return value.toString().toLowerCase() === filter.toString().toLowerCase();
+        },
+		
+        notEquals(value, filter) {
+            if(filter === undefined || filter === null || (typeof filter === 'string' && filter.trim() === '')) {
+                return false;
+            }
+            
+            if(value === undefined || value === null) {
+                return true;
+            }
+            
+            return value.toString().toLowerCase() !== filter.toString().toLowerCase();
+        },
+        
+        in(value, filter) {
+            if(filter === undefined || filter === null || filter.length === 0) {
+                return true;
+            }
+
+            if(value === undefined || value === null) {
+                return false;
+            }
+            
+            for(let i = 0; i < filter.length; i++) {
+                if(filter[i] === value)
+                    return true;
+            }
+            
+            return false;
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/main.js b/src/main.js
index fcea726f7..9243e1c89 100644
--- a/src/main.js
+++ b/src/main.js
@@ -2,6 +2,7 @@ import Vue from 'vue';
 import App from './App.vue';
 import router from './router';
 import InputText from './components/inputtext/InputText';
+import ListBox from './components/listbox/ListBox';
 import Button from './components/button/Button';
 
 import './assets/styles/primevue.css';
@@ -12,6 +13,7 @@ Vue.config.productionTip = false;
 
 Vue.component('p-inputtext', InputText);
 Vue.component('p-button', Button);
+Vue.component('p-listBox', ListBox);
 
 new Vue({
   router,
diff --git a/src/router.js b/src/router.js
index bd32fc3c4..01419b6cd 100644
--- a/src/router.js
+++ b/src/router.js
@@ -21,6 +21,11 @@ export default new Router({
         name: 'inputtext',
         component: () => import('./views/inputtext/InputTextDemo.vue')
     },
+    {
+        path: '/listbox',
+        name: 'listbox',
+        component: () => import('./views/listbox/ListBoxDemo.vue')
+    },
     {
         path: '/button',
         name: 'button',
diff --git a/src/views/listbox/ListBoxDemo.vue b/src/views/listbox/ListBoxDemo.vue
new file mode 100644
index 000000000..3e13ccab6
--- /dev/null
+++ b/src/views/listbox/ListBoxDemo.vue
@@ -0,0 +1,40 @@
+<template>
+    <div>
+        <div class="content-section introduction">
+            <div class="feature-intro">
+                <h1>ListBox</h1>
+                <p>ListBox is used to select one or more values from a list of items.</p>
+            </div>
+        </div>
+
+        <div class="content-section implementation">
+            <h3 class="first">Single</h3>
+            <p-listBox v-model="selectedCity" :options="cities" optionLabel="name" />{{selectedCity}}
+
+            <h3>Multiple</h3>
+            <p-listBox :multiple="true" v-model="selectedCities" :options="cities" optionLabel="name" />
+        </div>
+    </div>
+</template>
+
+<script>
+export default {
+    data() {
+        return {
+            selectedCity: null,
+            selectedCities: null,
+            cities: [
+                {name: 'New York', code: 'NY'},
+                {name: 'Rome', code: 'RM'},
+                {name: 'London', code: 'LDN'},
+                {name: 'Istanbul', code: 'IST'},
+                {name: 'Paris', code: 'PRS'}
+            ]
+        }
+    }
+}
+</script>
+
+<style>
+
+</style>