egroupware_official/etemplate/js/et2_widget_file.js
2014-01-30 09:07:02 +00:00

520 lines
14 KiB
JavaScript

/**
* EGroupware eTemplate2 - JS Number object
*
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @package etemplate
* @subpackage api
* @link http://www.egroupware.org
* @author Nathan Gray
* @copyright Nathan Gray 2011
* @version $Id$
*/
"use strict";
/*egw:uses
et2_core_inputWidget;
phpgwapi.jquery.jquery.html5_upload;
*/
/**
* Class which implements file upload
*
* @augments et2_inputWidget
*/
var et2_file = et2_inputWidget.extend(
{
attributes: {
"multiple": {
"name": "Multiple files",
"type": "boolean",
"default": false,
"description": "Allow the user to select more than one file to upload at a time. Subject to browser support."
},
"max_file_size": {
"name": "Maximum file size",
"type": "integer",
"default":"8388608",
"description": "Largest file accepted, in bytes. Subject to server limitations. 8Mb = 8388608"
},
"mime": {
"name": "Allowed file types",
"type": "string",
"default": et2_no_init,
"description": "Mime type (eg: image/png) or regex (eg: /^text\//i) for allowed file types"
},
"blur": {
"name": "Placeholder",
"type": "string",
"default": "",
"description": "This text get displayed if an input-field is empty and does not have the input-focus (blur). It can be used to show a default value or a kind of help-text."
},
"progress": {
"name": "Progress node",
"type": "string",
"default": et2_no_init,
"description": "The ID of an alternate node (div) to display progress and results. The Node is fetched with et2 getWidgetById so you MUST use the id assigned in XET-File (it may not be available at creation time, so we (re)check on createStatus time)"
},
"onStart": {
"name": "Start event handler",
"type": "any",
"default": et2_no_init,
"description": "A (js) function called when an upload starts. Return true to continue with upload, false to cancel."
},
"onFinish": {
"name": "Finish event handler",
"type": "any",
"default": et2_no_init,
"description": "A (js) function called when all files to be uploaded are finished."
},
drop_target: {
"name": "Optional, additional drop target for HTML5 uploads",
"type": "string",
"default": et2_no_init,
"description": "The ID of an additional drop target for HTML5 drag-n-drop file uploads"
}
},
asyncOptions: {},
/**
* Constructor
*
* @memberOf et2_file
*/
init: function() {
this._super.apply(this, arguments);
this.node = null;
this.input = null;
this.progress = null;
if(!this.options.id) {
console.warn("File widget needs an ID. Used 'file_widget'.");
this.options.id = "file_widget";
}
// Legacy - id ending in [] means multiple
if(this.options.id.substr(-2) == "[]")
{
this.options.multiple = true;
}
// Set up the URL to have the request ID & the widget ID
var instance = this.getInstanceManager();
var self = this;
this.asyncOptions = jQuery.extend({
// Callbacks
onStart: function(event, file_count) {
// Hide any previous errors
self.hideMessage();
return self.onStart(event, file_count);
},
onFinish: function(event, file_count) {
self.onFinish.apply(self, [event, file_count]);
// Fire legacy change action when done
self.change(self.input);
},
onStartOne: function(event, file_name, index, file_count) {
// Here 'this' is the input
if(self.checkMime(this.files[index]))
{
return self.createStatus(event,file_name, index,file_count);
}
else
{
// Wrong mime type - show in the list of files
return self.createStatus(
self.egw().lang("File is of wrong type (%1 != %2)!", this.files[index].type, self.options.mime),
file_name
);
}
},
onFinishOne: function(event, response, name, number, total) { return self.finishUpload(event,response,name,number,total);},
onProgress: function(event, progress, name, number, total) { return self.onProgress(event,progress,name,number,total);},
onError: function(event, name, error) { return self.onError(event,name,error);},
sendBoundary: window.FormData || jQuery.browser.mozilla,
beforeSend: function(form) { return self.beforeSend(form);},
url: egw.ajaxUrl(self.egw().getAppName()+".etemplate_widget_file.ajax_upload.etemplate"),
autoclear: !(this.options.onchange)
},this.asyncOptions);
this.asyncOptions.fieldName = this.options.id;
this.createInputWidget();
},
destroy: function() {
this._super.apply(this, arguments);
this.set_drop_target(null);
this.node = null;
this.input = null;
this.progress = null;
},
createInputWidget: function() {
this.node = $j(document.createElement("div")).addClass("et2_file");
this.input = $j(document.createElement("input"))
.attr("type", "file").attr("placeholder", this.options.blur)
.appendTo(this.node);
// Check for File interface, should fall back to normal form submit if missing
if(typeof File != "undefined" && typeof (new XMLHttpRequest()).upload != "undefined")
{
this.input.html5_upload(this.asyncOptions);
}
else
{
// This may be a problem submitting via ajax
}
if(this.options.progress)
{
var widget = this.getRoot().getWidgetById(this.options.progress);
if(widget)
{
//may be not available at createInputWidget time
this.progress = $j(widget.getDOMNode());
}
}
if(!this.progress)
{
this.progress = $j(document.createElement("div")).appendTo(this.node);
}
this.progress.addClass("progress");
if(this.options.multiple)
{
this.input.attr("multiple","multiple");
}
this.setDOMNode(this.node[0]);
},
/**
* Set a widget or DOM node as a HTML5 file drop target
*
* @param String new_target widget ID or DOM node ID to be used as a new target
*/
set_drop_target: function(new_target)
{
// Cancel old drop target
if(this.options.drop_target)
{
var widget = this.getRoot().getWidgetById(this.options.drop_target);
var drop_target = widget && widget.getDOMNode() || document.getElementById(this.options.drop_target);
$j(drop_target).off("."+this.id);
}
this.options.drop_target = new_target;
if(!this.options.drop_target) return;
// Set up new drop target
var widget = this.getRoot().getWidgetById(this.options.drop_target);
var drop_target = widget && widget.getDOMNode() || document.getElementById(this.options.drop_target);
if(drop_target)
{
// Tell jQuery to include this property
jQuery.event.props.push('dataTransfer');
var self = this;
drop_target.ondrop =function(event) {
return false;
};
$j(drop_target)
.on("drop."+this.id, jQuery.proxy(function(event) {
event.stopPropagation();
event.preventDefault();
this.input.removeClass("ui-state-active");
if(event.dataTransfer && event.dataTransfer.files.length > 0)
{
this.input[0].files = event.dataTransfer.files;
}
return false;
}, this))
.on("dragenter."+this.id,function(e) {
// Accept the drop if at least one mimetype matches
// Individual files will be rejected later
var mime_ok = false;
for(var file in e.dataTransfer.files)
{
mime_ok = mime_ok || self.checkMime(file);
}
if(!self.disabled && mime_ok)
{
self.input.addClass("ui-state-active");
}
// Returning true cancels, return false to allow
return self.disabled || !mime_ok;
})
.on("dragleave."+this.id, function(e) {
self.input.removeClass("ui-state-active");
// Returning true cancels, return false to allow
return self.disabled
})
.on("dragover."+this.id, function(e) {
// Returning true cancels, return false to allow
return self.disabled;
})
.on("dragend."+this.id, false);
}
else
{
this.egw().debug("warn", "Did not find file drop target %s", this.options.drop_target);
}
},
attachToDOM: function() {
this._super.apply(this, arguments);
// Override parent's change, file widget will fire change when finished uploading
this.input.unbind("change.et2_inputWidget");
},
getValue: function() {
var value = this.options.value ? this.options.value : this.input.val();
return value;
},
/**
* Set the value of the file widget.
*
* If you pass a FileList or list of files, it will trigger the async upload
*
* @param {FileList|File[]|false} value List of files to be uploaded, or false to reset.
*/
set_value: function(value) {
if(!value || typeof value == "undefined")
{
value = {};
}
if(jQuery.isEmptyObject(value))
{
this.options.value = {};
this.progress.empty();
// Reset the HTML element
this.input.wrap('<form>').closest('form').get(0).reset();
this.input.unwrap();
return;
}
if(typeof value == 'object' && value.length && typeof value[0] == 'object' && value[0].name)
{
this.input[0].files = value;
}
},
getInputNode: function() {
if (typeof this.input == 'undefined') return false;
return this.input[0];
},
set_mime: function(mime) {
if(!mime)
{
this.options.mime = null;
}
if(mime.indexOf("/") != 0)
{
// Lower case it now, if it's not a regex
this.options.mime = mime.toLowerCase();
}
else
{
// Convert into a js regex
var parts = mime.substr(1).match(/(.*)\/([igm]?)$/);
this.options.mime = new RegExp(parts[1],parts.length > 2 ? parts[2] : "");
}
},
set_multiple: function(_multiple) {
this.options.multiple = _multiple;
if(_multiple)
{
return this.input.attr("multiple", "multiple");
}
return this.input.removeAttr("multiple");
},
/**
* Check to see if the provided file's mimetype matches
*
* @param f File object
* @return boolean
*/
checkMime: function(f) {
// If missing, let the server handle it
if(!this.options.mime || !f.type) return true;
var is_preg = (typeof this.options.mime == "object");
if(!is_preg && f.type.toLowerCase() == this.options.mime || is_preg && this.options.mime.test(f.type))
{
return true;
}
// Not right mime
return false;
},
/**
* Add in the request id
*/
beforeSend: function(form) {
var instance = this.getInstanceManager();
// Form object available, mess with it directly
if(form) {
return form.append("request_id", instance.etemplate_exec_id);
}
// No Form object, add in as string
return 'Content-Disposition: form-data; name="request_id"\r\n\r\n'+instance.etemplate_exec_id+'\r\n';
},
/**
* Disables submit buttons while uploading
*/
onStart: function(event, file_count) {
this.disabled_buttons = $j("input[type='submit'], button").not("[disabled]").attr("disabled", true);
event.data = this;
if(this.options.onStart) return et2_call(this.options.onStart, event, file_count);
return true;
},
/**
* Re-enables submit buttons when done
*/
onFinish: function(event, file_count) {
this.disabled_buttons.attr("disabled", false);
event.data = this;
if(this.options.onFinish) return et2_call(this.options.onFinish, event, file_count);
},
/**
* Creates the elements used for displaying the file, and it's upload status, and
* attaches them to the DOM
*
* @param _event Either the event, or an error message
*/
createStatus: function(_event, file_name, index, file_count) {
var error = (typeof _event == "object" ? "" : _event);
if(this.input[0].files[index]) {
var file = this.input[0].files[index];
if(file.size > this.options.max_file_size) {
error = this.egw().lang("File too large. Maximum %1", et2_vfsSize.prototype.human_size(this.options.max_file_size));
}
}
if(this.options.progress)
{
var widget = this.getRoot().getWidgetById(this.options.progress);
if(widget)
{
this.progress = $j(widget.getDOMNode());
this.progress.addClass("progress");
}
}
if(this.progress)
{
var status = $j("<li file='"+file_name+"'>"+file_name
+"<div class='remove'/><span class='progressBar'><p/></span></li>")
.appendTo(this.progress);
$j("div.remove",status).click(this, this.cancel);
if(error != "")
{
status.addClass("message ui-state-error");
status.append("<div>"+error+"</diff>");
$j(".progressBar",status).css("display", "none");
}
}
return error == "";
},
onProgress: function(event, percent, name, number, total) {
if(this.progress)
{
$j("li[file='"+name+"'] > span.progressBar > p").css("width", Math.ceil(percent*100)+"%");
}
return true;
},
onError: function(event, name, error) {
console.warn(event,name,error);
},
/**
* A file upload is finished, update the UI
*/
finishUpload: function(event, response, name, number, total) {
if(typeof response == 'string') response = jQuery.parseJSON(response);
if(response.response[0] && typeof response.response[0].data.length == 'undefined') {
if(typeof this.options.value != 'object') this.options.value = {};
for(var key in response.response[0].data) {
if(typeof response.response[0].data[key] == "string")
{
// Message from server - probably error
$j("[file='"+name+"']",this.progress)
.addClass("error")
.css("display", "block")
.text(response.response[0].data[key]);
}
else
{
this.options.value[key] = response.response[0].data[key];
if(this.progress)
{
$j("[file='"+name+"']",this.progress).addClass("message success");
}
}
}
}
else if (this.progress)
{
$j("[file='"+name+"']",this.progress)
.addClass("ui-state-error")
.css("display", "block")
.text(this.egw().lang("Server error"));
}
if(this.options.onFinishOne)
{
return et2_call(this.options.onFinishOne,event,response,name,number,total);
}
return true;
},
/**
* Remove a file from the list of values
*/
remove_file: function(filename)
{
//console.info(filename);
for(var key in this.options.value)
{
if(this.options.value[key].name == filename)
{
delete this.options.value[key];
$j('[file="'+filename+'"]',this.node).remove();
return;
}
}
},
/**
* Cancel a file - event callback
*/
cancel: function(e)
{
e.preventDefault();
// Look for file name in list
var target = $j(e.target).parents("li.message");
e.data.remove_file.apply(e.data,[target.attr("file")]);
// In case it didn't make it to the list (error)
target.remove();
$j(e.target).remove();
}
});
et2_register_widget(et2_file, ["file"]);