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/**
* @license
* Visual Blocks Editor
*
* Copyright 2012 Google Inc.
* https://developers.google.com/blockly/
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @fileoverview Non-editable text field. Used for titles, labels, etc.
* @author fraser@google.com (Neil Fraser)
*/
'use strict';
goog.provide('Blockly.FieldLabel');
goog.require('Blockly.Field');
goog.require('Blockly.Tooltip');
goog.require('goog.dom');
goog.require('goog.math.Size');
/**
* Class for a non-editable field.
* @param {string} text The initial content of the field.
* @param {string=} opt_class Optional CSS class for the field's text.
* @extends {Blockly.Field}
* @constructor
*/
Blockly.FieldLabel = function(text, opt_class) {
this.size_ = new goog.math.Size(0, 17.5);
this.class_ = opt_class;
this.setValue(text);
};
goog.inherits(Blockly.FieldLabel, Blockly.Field);
/**
* Editable fields are saved by the XML renderer, non-editable fields are not.
*/
Blockly.FieldLabel.prototype.EDITABLE = false;
/**
* Install this text on a block.
*/
Blockly.FieldLabel.prototype.init = function() {
if (this.textElement_) {
// Text has already been initialized once.
return;
}
// Build the DOM.
this.textElement_ = Blockly.createSvgElement('text',
{'class': 'blocklyText', 'y': this.size_.height - 5}, null);
if (this.class_) {
Blockly.addClass_(this.textElement_, this.class_);
}
if (!this.visible_) {
this.textElement_.style.display = 'none';
}
this.sourceBlock_.getSvgRoot().appendChild(this.textElement_);
// Configure the field to be transparent with respect to tooltips.
this.textElement_.tooltip = this.sourceBlock_;
Blockly.Tooltip.bindMouseEvents(this.textElement_);
// Force a render.
this.updateTextNode_();
};
/**
* Dispose of all DOM objects belonging to this text.
*/
Blockly.FieldLabel.prototype.dispose = function() {
goog.dom.removeNode(this.textElement_);
this.textElement_ = null;
};
/**
* Gets the group element for this field.
* Used for measuring the size and for positioning.
* @return {!Element} The group element.
*/
Blockly.FieldLabel.prototype.getSvgRoot = function() {
return /** @type {!Element} */ (this.textElement_);
};
/**
* Change the tooltip text for this field.
* @param {string|!Element} newTip Text for tooltip or a parent element to
* link to for its tooltip.
*/
Blockly.FieldLabel.prototype.setTooltip = function(newTip) {
this.textElement_.tooltip = newTip;
};
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