ui: add form/Tag

displays a single tag, with the ability to edit inline on click (when
the mode is set to editable). This brings up a list of globally available tags
for simple selection.

this is a basic ext component, with 'i' tags for the icons (handle and
add/remove button) and a span (for the tag text)

shows the tag by default, and if put in editable mode, makes the
span editable. when actually starting the edit, shows a picker
with available tags to select from

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>

www/css/ext6-pve.css

@@ -656,3 +656,35 @@ table.osds td:first-of-type {
     padding-top: 0px;
     padding-bottom: 0px;
 }
+
+.pve-edit-tag > i {
+    cursor: pointer;
+    font-size: 14px;
+}
+
+.pve-edit-tag > i.handle {
+    padding-right: 5px;
+    cursor: grab;
+}
+
+.pve-edit-tag > i.action {
+    padding-left: 5px;
+}
+
+.pve-edit-tag.normal > i {
+    display: none;
+}
+
+.pve-edit-tag.editable span,
+.pve-edit-tag.inEdit span {
+    background-color: #ffffff;
+    border: 1px solid #a8a8a8;
+    color: #000;
+    padding-left: 2px;
+    padding-right: 2px;
+    min-width: 2em;
+}
+
+.pve-edit-tag.inEdit span {
+    border: 1px solid #000;
+}

www/manager6/Makefile

@@ -75,6 +75,7 @@ JSSRC= 							\
 	form/iScsiProviderSelector.js			\
 	form/TagColorGrid.js				\
 	form/ListField.js				\
+	form/Tag.js					\
 	grid/BackupView.js				\
 	grid/FirewallAliases.js				\
 	grid/FirewallOptions.js				\

www/manager6/form/Tag.js

@@ -0,0 +1,232 @@
+Ext.define('Proxmox.form.Tag', {
+    extend: 'Ext.Component',
+    alias: 'widget.pveTag',
+
+    mode: 'editable',
+
+    icons: {
+	editable: 'fa fa-minus-square',
+	normal: '',
+	inEdit: 'fa fa-check-square',
+    },
+
+    tag: '',
+    cls: 'pve-edit-tag',
+
+    tpl: [
+	'<i class="handle fa fa-bars"></i>',
+	'<span>{tag}</span>',
+	'<i class="action {iconCls}"></i>',
+    ],
+
+    // we need to do this in mousedown, because that triggers before
+    // focusleave (which triggers before click)
+    onMouseDown: function(event) {
+	let me = this;
+	if (event.target.tagName !== 'I' || event.target.classList.contains('handle')) {
+	    return;
+	}
+	switch (me.mode) {
+	    case 'editable':
+		me.setVisible(false);
+		me.setTag('');
+		break;
+	    case 'inEdit':
+		me.setTag(me.tagEl().innerHTML);
+		me.setMode('editable');
+		break;
+	    default: break;
+	}
+    },
+
+    onClick: function(event) {
+	let me = this;
+	if (event.target.tagName !== 'SPAN' || me.mode !== 'editable') {
+	    return;
+	}
+	me.setMode('inEdit');
+
+	// select text in the element
+	let tagEl = me.tagEl();
+	tagEl.contentEditable = true;
+	let range = document.createRange();
+	range.selectNodeContents(tagEl);
+	let sel = window.getSelection();
+	sel.removeAllRanges();
+	sel.addRange(range);
+
+	me.showPicker();
+    },
+
+    showPicker: function() {
+	let me = this;
+	if (!me.picker) {
+	    me.picker = Ext.widget({
+		xtype: 'boundlist',
+		minWidth: 70,
+		scrollable: true,
+		floating: true,
+		hidden: true,
+		userCls: 'proxmox-tags-full',
+		displayField: 'tag',
+		itemTpl: [
+		    '{[Proxmox.Utils.getTagElement(values.tag, PVE.Utils.tagOverrides)]}',
+		],
+		store: [],
+		listeners: {
+		    select: function(picker, rec) {
+			me.setTag(rec.data.tag);
+			me.setMode('editable');
+			me.picker.hide();
+		    },
+		},
+	    });
+	}
+	me.picker.getStore()?.clearFilter();
+	let taglist = PVE.Utils.tagList.map(v => ({ tag: v }));
+	if (taglist.length < 1) {
+	    return;
+	}
+	me.picker.getStore().setData(taglist);
+	me.picker.showBy(me, 'tl-bl');
+	me.picker.setMaxHeight(200);
+    },
+
+    setMode: function(mode) {
+	let me = this;
+	if (me.icons[mode] === undefined) {
+	    throw "invalid mode";
+	}
+	let tagEl = me.tagEl();
+	if (tagEl) {
+	    tagEl.contentEditable = mode === 'inEdit';
+	}
+	me.removeCls(me.mode);
+	me.addCls(mode);
+	me.mode = mode;
+	me.updateData();
+    },
+
+    onKeyPress: function(event) {
+	let me = this;
+	let key = event.browserEvent.key;
+	switch (key) {
+	    case 'Enter':
+		if (me.tagEl().innerHTML !== '') {
+		    me.setTag(me.tagEl().innerHTML);
+		    me.setMode('editable');
+		    return;
+		}
+		break;
+	    case 'Escape':
+		me.cancelEdit();
+		return;
+	    case 'Backspace':
+	    case 'Delete':
+		return;
+	    default:
+		if (key.match(PVE.Utils.tagCharRegex)) {
+		    return;
+		}
+	}
+	event.browserEvent.preventDefault();
+	event.browserEvent.stopPropagation();
+    },
+
+    beforeInput: function(event) {
+	let me = this;
+	me.updateLayout();
+	let tag = event.event.data ?? event.event.dataTransfer?.getData('text/plain');
+	if (!tag) {
+	    return;
+	}
+	if (tag.match(PVE.Utils.tagCharRegex) === null) {
+	    event.event.preventDefault();
+	    event.event.stopPropagation();
+	}
+    },
+
+    onInput: function(event) {
+	let me = this;
+	me.picker.getStore().filter({
+	    property: 'tag',
+	    value: me.tagEl().innerHTML,
+	    anyMatch: true,
+	});
+    },
+
+    cancelEdit: function(list, event) {
+	let me = this;
+	if (me.mode === 'inEdit') {
+	    me.setTag(me.tag);
+	    me.setMode('editable');
+	}
+	me.picker?.hide();
+    },
+
+
+    setTag: function(tag) {
+	let me = this;
+	let oldtag = me.tag;
+	me.tag = tag;
+	let rgb = PVE.Utils.tagOverrides[tag] ?? Proxmox.Utils.stringToRGB(tag);
+
+	let cls = Proxmox.Utils.getTextContrastClass(rgb);
+	let color = Proxmox.Utils.rgbToCss(rgb);
+	me.setUserCls(`proxmox-tag-${cls}`);
+	me.setStyle('background-color', color);
+	if (rgb.length > 3) {
+	    let fgcolor = Proxmox.Utils.rgbToCss([rgb[3], rgb[4], rgb[5]]);
+
+	    me.setStyle('color', fgcolor);
+	} else {
+	    me.setStyle('color');
+	}
+	me.updateData();
+	if (oldtag !== tag) {
+	    me.fireEvent('change', me, tag, oldtag);
+	}
+    },
+
+    updateData: function() {
+	let me = this;
+	if (me.destroying || me.destroyed) {
+	    return;
+	}
+	me.update({
+	    tag: me.tag,
+	    iconCls: me.icons[me.mode],
+	});
+    },
+
+    tagEl: function() {
+	return this.el?.dom?.getElementsByTagName('span')?.[0];
+    },
+
+    listeners: {
+	mousedown: 'onMouseDown',
+	click: 'onClick',
+	focusleave: 'cancelEdit',
+	keydown: 'onKeyPress',
+	beforeInput: 'beforeInput',
+	input: 'onInput',
+	element: 'el',
+	scope: 'this',
+    },
+
+    initComponent: function() {
+	let me = this;
+
+	me.setTag(me.tag);
+	me.setMode(me.mode ?? 'normal');
+	me.callParent();
+    },
+
+    destroy: function() {
+	let me = this;
+	if (me.picker) {
+	    Ext.destroy(me.picker);
+	}
+	me.callParent();
+    },
+});