egroupware/api/js/etemplate/et2_core_DOMWidget.ts
2020-02-11 15:18:25 -07:00

939 lines
23 KiB
TypeScript

/**
* EGroupware eTemplate2 - JS DOM Widget class
*
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @package etemplate
* @subpackage api
* @link http://www.egroupware.org
* @author Andreas Stöckel
*/
/*egw:uses
et2_core_interfaces;
et2_core_widget;
/api/js/egw_action/egw_action.js;
*/
import {ClassWithAttributes} from './et2_core_inheritance';
import './et2_core_interfaces';
import './et2_core_common';
import {et2_widget, WidgetConfig} from "./et2_core_widget";
import {
EGW_AI_DRAG_OUT,
EGW_AI_DRAG_OVER,
egw_getActionManager,
egw_getAppObjectManager,
egw_getObjectManager,
egwActionObject,
egwActionObjectInterface
} from '../egw_action/egw_action.js';
import './et2_types';
/**
* Abstract widget class which can be inserted into the DOM. All widget classes
* deriving from this class have to care about implementing the "getDOMNode"
* function which has to return the DOM-Node.
*
* @augments et2_widget
*/
export abstract class et2_DOMWidget extends et2_widget implements et2_IDOMNode
{
static readonly _attributes : any = {
"disabled": {
"name": "Disabled",
"type": "boolean",
"description": "Defines whether this widget is visible. Not to be confused with an input widget's HTML attribute 'disabled'.",
"default": false
},
"width": {
"name": "Width",
"type": "dimension",
"default": et2_no_init,
"description": "Width of the element in pixels, percentage or 'auto'"
},
"height": {
"name": "Height",
"type": "dimension",
"default": et2_no_init,
"description": "Height of the element in pixels, percentage or 'auto'"
},
"class": {
"name": "CSS Class",
"type": "string",
"default": et2_no_init,
"description": "CSS Class which is applied to the dom element of this node"
},
"overflow": {
"name": "Overflow",
"type": "string",
"default": et2_no_init,
"description": "If set, the css-overflow attribute is set to that value"
},
"parent_node": {
"name": "DOM parent",
"type": "string",
"default": et2_no_init,
"description": "Insert into the target DOM node instead of the normal location"
},
"actions": {
"name": "Actions list",
"type": "any",
"default": et2_no_init,
"description": "List of egw actions that can be done on the widget. This includes context menu, drag and drop. TODO: Link to action documentation"
},
default_execute: {
name: "Default onExecute for actions",
type: "js",
default: et2_no_init,
description: "Set default onExecute javascript method for action not specifying their own"
},
resize_ratio: {
name: "Resize height of the widget on callback resize",
type:"string",
default: '',
description: "Allow Resize height of the widget based on exess height and given ratio"
},
data: {
name: "comma-separated name:value pairs set as data attributes on DOM node",
type: "string",
default: '',
description: 'data="mime:${row}[mime]" would generate data-mime="..." in DOM, eg. to use it in CSS on a parent'
},
background: {
name: "Add background image",
type: "string",
default:'',
description: "Sets background image, left, right and scale on DOM",
}
};
parentNode : HTMLElement = null;
disabled : boolean = false;
protected _attachSet : any = {
"node": null,
"parent": null
};
protected _actionManager: any;
width: number;
height: number;
dom_id: string;
overflow: string;
/**
* When the DOMWidget is initialized, it grabs the DOM-Node of the parent
* object (if available) and passes it to its own "createDOMNode" function
*
* @memberOf et2_DOMWidget
*/
constructor(_parent, _attrs? : WidgetConfig, _child? : object)
{
// Call the inherited constructor
super(_parent, _attrs, ClassWithAttributes.extendAttributes(et2_DOMWidget._attributes, _child || {}));
this._surroundingsMgr = null;
}
abstract getDOMNode(_sender?: et2_widget): HTMLElement
/**
* Detatches the node from the DOM and clears all references to the parent
* node or the dom node of this widget.
*/
destroy()
{
this.detachFromDOM();
this.parentNode = null;
this._attachSet = {};
if(this._actionManager)
{
var app_om = egw_getObjectManager(this.egw().getAppName(), false,1);
if(app_om)
{
var om = app_om.getObjectById(this.id);
if(om) om.remove();
}
this._actionManager.remove();
this._actionManager = null;
}
if (this._surroundingsMgr)
{
this._surroundingsMgr.destroy();
this._surroundingsMgr = null;
}
super.destroy();
}
/**
* Attaches the container node of this widget to the DOM-Tree
*/
doLoadingFinished() : boolean | JQueryPromise<unknown>
{
// Check whether the parent implements the et2_IDOMNode interface. If
// yes, grab the DOM node and create our own.
if (this.getParent() && this.getParent().implements(et2_IDOMNode))
{
if(this.options.parent_node)
{
this.set_parent_node(this.options.parent_node);
}
else
{
this.setParentDOMNode((<et2_IDOMNode><unknown>this.getParent()).getDOMNode(this));
}
}
return true;
}
/**
* Detaches the widget from the DOM tree, if it had been attached to the
* DOM-Tree using the attachToDOM method.
*/
detachFromDOM()
{
if (this._attachSet && this._attachSet.node && this._attachSet.parent)
{
// Remove the current node from the parent node
try {
this._attachSet.parent.removeChild(this._attachSet.node);
} catch (e) {
// Don't throw a DOM error if the node wasn't in the parent
}
// Reset the "attachSet"
this._attachSet = {
"node": null,
"parent": null
};
return true;
}
return false;
}
/**
* Attaches the widget to the DOM tree. Fails if the widget is already
* attached to the tree or no parent node or no node for this widget is
* defined.
*/
attachToDOM()
{
// Attach the DOM node of this widget (if existing) to the new parent
var node = this.getDOMNode(this);
if (node && this.parentNode &&
(!this._attachSet || this._attachSet && node != this._attachSet.node ||
this.parentNode != this._attachSet.parent))
{
// If the surroundings manager exists, surround the DOM-Node of this
// widget with the DOM-Nodes inside the surroundings manager.
if (this._surroundingsMgr)
{
node = this._surroundingsMgr.getDOMNode(node);
}
// Append this node at its index
var idx = this.getDOMIndex();
if (idx < 0 || idx >= this.parentNode.childNodes.length - 1)
{
this.parentNode.appendChild(node);
}
else
{
this.parentNode.insertBefore(node, this.parentNode.childNodes[idx]);
}
// Store the currently attached nodes
this._attachSet = {
"node": node,
"parent": this.parentNode
};
return true;
}
return false;
}
isAttached() {
return this.parentNode != null;
}
private _surroundingsMgr : et2_surroundingsMgr;
getSurroundings() : et2_surroundingsMgr
{
if (!this._surroundingsMgr)
{
this._surroundingsMgr = new et2_surroundingsMgr(this);
}
return this._surroundingsMgr;
}
/**
* Get data for the tab this widget is on.
*
* Will return null if the widget is not on a tab or tab data containing
* - id
* - label
* - widget (top level widget)
* - contentDiv (jQuery object for the div the tab content is in)
*
* @returns {Object|null} Data for tab the widget is on
*/
get_tab_info() : {id: string, label: string, widget: et2_widget, contentDiv: JQuery, flagDiv: JQuery} | null
{
var parent : et2_widget = this;
do {
parent = parent.getParent();
} while (parent !== this.getRoot() && parent.getType() !== 'tabbox');
// No tab
if(parent === this.getRoot())
{
return null;
}
let tabbox : et2_tabbox = <et2_tabbox><unknown>parent;
// Find the tab index
for(var i = 0; i < tabbox.tabData.length; i++)
{
// Find the tab by DOM heritage
// @ts-ignore
if(tabbox.tabData[i].contentDiv.has(this.div).length)
{
return tabbox.tabData[i];
}
}
// On a tab, but we couldn't find it by DOM nodes Maybe tab template is
// not loaded yet. Try checking IDs.
var template : et2_widget = this;
do {
template = template.getParent();
// @ts-ignore
} while (template !== tabbox && template.getType() !== 'template');
for (var i = tabbox.tabData.length - 1; i >= 0; i--)
{
if (template && template.id && template.id === tabbox.tabData[i].id)
{
return tabbox.tabData[i];
}
}
// Fallback
let fallback = <et2_DOMWidget><unknown>this.getParent();
if (typeof fallback.get_tab_info === 'function')
{
return fallback.get_tab_info();
}
return null;
}
/**
* Set the parent DOM node of this element. Takes a wider variety of types
* than setParentDOMNode(), and matches the set_<attribute> naming convention.
*
* @param _node String|DOMNode DOM node to contain the widget, or the ID of the DOM node.
*/
set_parent_node(_node)
{
if(typeof _node == "string")
{
var parent = jQuery('#'+_node);
if(parent.length === 0 && window.parent)
{
// Could not find it, try again with wider context
// (in case there's an iframe in admin, for example)
parent = jQuery('#'+_node, window.parent.document);
}
if(parent.length === 0)
{
this.egw().debug('warn','Unable to find DOM parent node with ID "%s" for widget %o.',_node,this);
}
else
{
this.setParentDOMNode(parent.get(0));
}
}
else
{
this.setParentDOMNode(_node);
}
}
/**
* Set the parent DOM node of this element. If another parent node is already
* set, this widget removes itself from the DOM tree
*
* @param _node
*/
setParentDOMNode(_node : HTMLElement)
{
if (_node != this.parentNode)
{
// Detatch this element from the DOM tree
this.detachFromDOM();
this.parentNode = _node;
// And attatch the element to the DOM tree
this.attachToDOM();
}
}
/**
* Returns the parent node.
*/
getParentDOMNode() : HTMLElement
{
return this.parentNode;
}
/**
* Returns the index of this element in the DOM tree
*/
getDOMIndex() : number
{
if (this.getParent())
{
var idx = 0;
var children = this.getParent().getChildren();
if(children && children.indexOf) return children.indexOf(this);
egw.debug('warn', 'No Array.indexOf(), falling back to looping. ');
for (var i = 0; i < children.length; i++)
{
if (children[i] == this)
{
return idx;
}
else if (children[i].isInTree())
{
idx++;
}
}
}
return -1;
}
/**
* Sets the id of the DOM-Node.
*
* DOM id's have dots "." replaced with dashes "-"
*
* @param {string} _value id to set
*/
set_id(_value) {
this.id = _value;
this.dom_id = _value ? this.getInstanceManager().uniqueId+'_'+_value.replace(/\./g, '-') : _value;
var node = this.getDOMNode(this);
if (node)
{
if (_value != "")
{
node.setAttribute("id", this.dom_id);
}
else
{
node.removeAttribute("id");
}
}
}
set_disabled(_value) {
var node = this._surroundingsMgr != null ? this._surroundingsMgr.getDOMNode(this.getDOMNode(this)) : this.getDOMNode(this);
if (node && this.disabled != _value)
{
this.disabled = _value;
if (_value)
{
jQuery(node).hide();
}
else
{
jQuery(node).show();
}
}
}
set_width(_value) {
this.width = _value;
var node = this.getDOMNode(this);
if (node)
{
jQuery(node).css("width", _value);
}
}
set_height(_value) {
this.height = _value;
var node = this.getDOMNode(this);
if (node)
{
jQuery(node).css("height", _value);
}
}
set_class(_value) {
var node = this.getDOMNode(this);
if (node)
{
if (this["class"])
{
jQuery(node).removeClass(this["class"]);
}
jQuery(node).addClass(_value);
}
this["class"] = _value;
}
set_overflow(_value) {
this.overflow = _value;
var node = this.getDOMNode(this);
if (node)
{
jQuery(node).css("overflow", _value);
}
}
set_data(_value)
{
var node = this.getDOMNode(this);
if (node && _value)
{
var pairs = _value.split(/,/g);
for(var i=0; i < pairs.length; ++i)
{
var name_value = pairs[i].split(':');
jQuery(node).attr('data-'+name_value[0], name_value[1]);
}
}
}
set_background(_value)
{
var node = this.getDOMNode(this);
var values = '';
if (_value && node)
{
values = _value.split(',');
jQuery(node).css({
"background-image":'url("'+values[0]+'")',
"background-position-x":values[1],
"background-position-y":values[2],
"background-scale":values[3]
});
}
}
/**
* Set Actions on the widget
*
* Each action is defined as an object:
*
* move: {
* type: "drop",
* acceptedTypes: "mail",
* icon: "move",
* caption: "Move to"
* onExecute: javascript:mail_move"
* }
*
* This will turn the widget into a drop target for "mail" drag types. When "mail" drag types are dropped,
* the global function mail_move(egwAction action, egwActionObject sender) will be called. The ID of the
* dragged "mail" will be in sender.id, some information about the sender will be in sender.context. The
* etemplate2 widget involved can typically be found in action.parent.data.widget, so your handler
* can operate in the widget context easily. The location varies depending on your action though. It
* might be action.parent.parent.data.widget
*
* To customise how the actions are handled for a particular widget, override _link_actions(). It handles
* the more widget-specific parts.
*
* @param {object} actions {ID: {attributes..}+} map of egw action information
* @see api/src/Etemplate/Widget/Nextmatch.php egw_actions() method
*/
set_actions(actions)
{
if(this.id == "" || typeof this.id == "undefined")
{
this.egw().debug("warn", "Widget should have an ID if you want actions",this);
return;
}
// Initialize the action manager and add some actions to it
// Only look 1 level deep
var gam = window.egw_getActionManager(this.egw().appName,true,1);
if(typeof this._actionManager != "object")
{
if(gam.getActionById(this.getInstanceManager().uniqueId,1) !== null)
{
gam = gam.getActionById(this.getInstanceManager().uniqueId,1);
}
if(gam.getActionById(this.id,1) != null)
{
this._actionManager = gam.getActionById(this.id,1);
}
else
{
this._actionManager = gam.addAction("actionManager", this.id);
}
}
this._actionManager.updateActions(actions, this.egw().appName);
if (this.options.default_execute) this._actionManager.setDefaultExecute(this.options.default_execute);
// Put a reference to the widget into the action stuff, so we can
// easily get back to widget context from the action handler
this._actionManager.data = {widget: this};
// Link the actions to the DOM
this._link_actions(actions);
}
set_default_execute(_default_execute)
{
this.options.default_execute = _default_execute;
if (this._actionManager) this._actionManager.setDefaultExecute(null, _default_execute);
}
/**
* Get all action-links / id's of 1.-level actions from a given action object
*
* This can be overwritten to not allow all actions, by not returning them here.
*
* @param actions
* @returns {Array}
*/
_get_action_links(actions)
{
var action_links = [];
for(var i in actions)
{
var action = actions[i];
action_links.push(typeof action.id != 'undefined' ? action.id : i);
}
return action_links;
}
/**
* Link the actions to the DOM nodes / widget bits.
*
* @param {object} actions {ID: {attributes..}+} map of egw action information
*/
_link_actions(actions)
{
// Get the top level element for the tree
var objectManager = egw_getAppObjectManager(true);
var widget_object = objectManager.getObjectById(this.id);
if (widget_object == null) {
// Add a new container to the object manager which will hold the widget
// objects
widget_object = objectManager.insertObject(false, new egwActionObject(
this.id, objectManager, (new et2_action_object_impl(this)).getAOI(),
this._actionManager || objectManager.manager.getActionById(this.id) || objectManager.manager
));
}
else
{
widget_object.setAOI((new et2_action_object_impl(this, this.getDOMNode())).getAOI());
}
// Delete all old objects
widget_object.clear();
widget_object.unregisterActions();
// Go over the widget & add links - this is where we decide which actions are
// 'allowed' for this widget at this time
var action_links = this._get_action_links(actions);
widget_object.updateActionLinks(action_links);
}
}
/**
* The surroundings manager class allows to append or prepend elements around
* an widget node.
*/
class et2_surroundingsMgr extends ClassWithAttributes
{
widget: et2_DOMWidget;
private _widgetContainer: any = null;
private _widgetSurroundings: any[] = [];
private _widgetPlaceholder: any = null;
private _widgetNode: HTMLElement = null;
private _ownPlaceholder: boolean = true;
private _surroundingsUpdated: boolean = false;
/**
* Constructor
*
* @memberOf et2_surroundingsMgr
* @param _widget
*/
constructor(_widget : et2_DOMWidget)
{
super();
this.widget = _widget;
}
destroy() {
this._widgetContainer = null;
this._widgetSurroundings = null;
this._widgetPlaceholder = null;
this._widgetNode = null;
}
prependDOMNode(_node) {
this._widgetSurroundings.unshift(_node);
this._surroundingsUpdated = true;
}
appendDOMNode(_node) {
// Append an placeholder first if none is existing yet
if (this._ownPlaceholder && this._widgetPlaceholder == null)
{
this._widgetPlaceholder = document.createElement("span");
this._widgetSurroundings.push(this._widgetPlaceholder);
}
// Append the given node
this._widgetSurroundings.push(_node);
this._surroundingsUpdated = true;
}
insertDOMNode(_node) {
if (!this._ownPlaceholder || this._widgetPlaceholder == null)
{
this.appendDOMNode(_node);
return;
}
// Get the index of the widget placeholder and delete it, insert the
// given node instead
var idx = this._widgetSurroundings.indexOf(this._widgetPlaceholder);
this._widgetSurroundings.splice(idx, 1, _node);
// Delete the reference to the own placeholder
this._widgetPlaceholder = null;
this._ownPlaceholder = false;
}
removeDOMNode(_node) {
for (var i = 0; this._widgetSurroundings && i < this._widgetSurroundings.length; i++)
{
if (this._widgetSurroundings[i] == _node)
{
this._widgetSurroundings.splice(i, 1);
this._surroundingsUpdated = true;
break;
}
}
}
setWidgetPlaceholder(_node) {
if (_node != this._widgetPlaceholder)
{
if (_node != null && this._ownPlaceholder && this._widgetPlaceholder != null)
{
// Delete the current placeholder which was created by the
// widget itself
var idx = this._widgetSurroundings.indexOf(this._widgetPlaceholder);
this._widgetSurroundings.splice(idx, 1);
// Delete any reference to the own placeholder and set the
// _ownPlaceholder flag to false
this._widgetPlaceholder = null;
this._ownPlaceholder = false;
}
this._ownPlaceholder = (_node == null);
this._widgetPlaceholder = _node;
this._surroundingsUpdated = true;
}
}
private _rebuildContainer() {
// Return if there has been no change in the "surroundings-data"
if (!this._surroundingsUpdated)
{
return false;
}
// Build the widget container
if (this._widgetSurroundings.length > 0)
{
// Check whether the widgetPlaceholder is really inside the DOM-Tree
var hasPlaceholder = et2_hasChild(this._widgetSurroundings,
this._widgetPlaceholder);
// If not, append another widget placeholder
if (!hasPlaceholder)
{
this._widgetPlaceholder = document.createElement("span");
this._widgetSurroundings.push(this._widgetPlaceholder);
this._ownPlaceholder = true;
}
// If the surroundings array only contains one element, set this one
// as the widget container
if (this._widgetSurroundings.length == 1)
{
if (this._widgetSurroundings[0] == this._widgetPlaceholder)
{
this._widgetContainer = null;
}
else
{
this._widgetContainer = this._widgetSurroundings[0];
}
}
else
{
// Create an outer "span" as widgetContainer
this._widgetContainer = document.createElement("span");
// Append the children inside the widgetSurroundings array to
// the widget container
for (var i = 0; i < this._widgetSurroundings.length; i++)
{
this._widgetContainer.appendChild(this._widgetSurroundings[i]);
}
}
}
else
{
this._widgetContainer = null;
this._widgetPlaceholder = null;
}
this._surroundingsUpdated = false;
return true;
}
update() {
if (this._surroundingsUpdated)
{
var attached = this.widget ? this.widget.isAttached() : false;
// Reattach the widget - this will call the "getDOMNode" function
// and trigger the _rebuildContainer function.
if (attached && this.widget)
{
this.widget.detachFromDOM();
this.widget.attachToDOM();
}
}
}
getDOMNode(_widgetNode) {
// Update the whole widgetContainer if this is not the first time this
// function has been called but the widget node has changed.
if (this._widgetNode != null && this._widgetNode != _widgetNode)
{
this._surroundingsUpdated = true;
}
// Copy a reference to the given node
this._widgetNode = _widgetNode;
// Build the container if it didn't exist yet.
var updated = this._rebuildContainer();
// Return the widget node itself if there are no surroundings arround
// it
if (this._widgetContainer == null)
{
return _widgetNode;
}
// Replace the widgetPlaceholder with the given widget node if the
// widgetContainer has been updated
if (updated)
{
this._widgetPlaceholder.parentNode.replaceChild(_widgetNode,
this._widgetPlaceholder);
if (!this._ownPlaceholder)
{
this._widgetPlaceholder = _widgetNode;
}
}
// Return the widget container
return this._widgetContainer;
}
getWidgetSurroundings() : HTMLElement []
{
return this._widgetSurroundings;
}
}
/**
* The egw_action system requires an egwActionObjectInterface Interface implementation
* to tie actions to DOM nodes. This one can be used by any widget.
*
* The class extension is different than the widgets
*
* @param {et2_DOMWidget} widget
* @param {Object} node
*
*/
export class et2_action_object_impl
{
aoi : egwActionObjectInterface;
constructor(_widget : et2_DOMWidget, _node? : HTMLElement)
{
var widget = _widget;
var objectNode = _node;
this.aoi = new egwActionObjectInterface();
this.aoi.getWidget = function () {
return widget;
};
this.aoi.doGetDOMNode = function () {
return objectNode ? objectNode : widget.getDOMNode();
};
// _outerCall may be used to determine, whether the state change has been
// evoked from the outside and the stateChangeCallback has to be called
// or not.
this.aoi.doSetState = function (_state, _outerCall)
{
};
// The doTiggerEvent function may be overritten by the aoi if it wants to
// support certain action implementation specific events like EGW_AI_DRAG_OVER
// or EGW_AI_DRAG_OUT
this.aoi.doTriggerEvent = function (_event, _data)
{
switch (_event) {
case EGW_AI_DRAG_OVER:
jQuery(this.node).addClass("ui-state-active");
break;
case EGW_AI_DRAG_OUT:
jQuery(this.node).removeClass("ui-state-active");
break;
}
};
}
getAOI()
{
return this.aoi;
}
}