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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 Object representing a warning.
* @author fraser@google.com (Neil Fraser)
*/
'use strict';
goog.provide('Blockly.Warning');
goog.require('Blockly.Bubble');
goog.require('Blockly.Icon');
/**
* Class for a warning.
* @param {!Blockly.Block} block The block associated with this warning.
* @extends {Blockly.Icon}
* @constructor
*/
Blockly.Warning = function(block) {
Blockly.Warning.superClass_.constructor.call(this, block);
this.createIcon();
// The text_ object can contain multiple warnings.
this.text_ = {};
};
goog.inherits(Blockly.Warning, Blockly.Icon);
/**
* Does this icon get hidden when the block is collapsed.
*/
Blockly.Warning.prototype.collapseHidden = false;
/**
* Draw the warning icon.
* @param {!Element} group The icon group.
* @private
*/
Blockly.Warning.prototype.drawIcon_ = function(group) {
// Triangle with rounded corners.
Blockly.createSvgElement('path',
{'class': 'blocklyIconShape',
'd': 'M2,15Q-1,15 0.5,12L6.5,1.7Q8,-1 9.5,1.7L15.5,12Q17,15 14,15z'},
group);
// Can't use a real '!' text character since different browsers and operating
// systems render it differently.
// Body of exclamation point.
Blockly.createSvgElement('path',
{'class': 'blocklyIconSymbol',
'd': 'm7,4.8v3.16l0.27,2.27h1.46l0.27,-2.27v-3.16z'},
group);
// Dot of exclamation point.
Blockly.createSvgElement('rect',
{'class': 'blocklyIconSymbol',
'x': '7', 'y': '11', 'height': '2', 'width': '2'},
group);
};
/**
* Create the text for the warning's bubble.
* @param {string} text The text to display.
* @return {!SVGTextElement} The top-level node of the text.
* @private
*/
Blockly.Warning.textToDom_ = function(text) {
var paragraph = /** @type {!SVGTextElement} */ (
Blockly.createSvgElement('text',
{'class': 'blocklyText blocklyBubbleText',
'y': Blockly.Bubble.BORDER_WIDTH},
null));
var lines = text.split('\n');
for (var i = 0; i < lines.length; i++) {
var tspanElement = Blockly.createSvgElement('tspan',
{'dy': '1em', 'x': Blockly.Bubble.BORDER_WIDTH}, paragraph);
var textNode = document.createTextNode(lines[i]);
tspanElement.appendChild(textNode);
}
return paragraph;
};
/**
* Show or hide the warning bubble.
* @param {boolean} visible True if the bubble should be visible.
*/
Blockly.Warning.prototype.setVisible = function(visible) {
if (visible == this.isVisible()) {
// No change.
return;
}
Blockly.Events.fire(
new Blockly.Events.Ui(this.block_, 'warningOpen', !visible, visible));
if (visible) {
// Create the bubble to display all warnings.
var paragraph = Blockly.Warning.textToDom_(this.getText());
this.bubble_ = new Blockly.Bubble(
/** @type {!Blockly.WorkspaceSvg} */ (this.block_.workspace),
paragraph, this.block_.svgPath_, this.iconXY_, null, null);
if (this.block_.RTL) {
// Right-align the paragraph.
// This cannot be done until the bubble is rendered on screen.
var maxWidth = paragraph.getBBox().width;
for (var i = 0, textElement; textElement = paragraph.childNodes[i]; i++) {
textElement.setAttribute('text-anchor', 'end');
textElement.setAttribute('x', maxWidth + Blockly.Bubble.BORDER_WIDTH);
}
}
this.updateColour();
// Bump the warning into the right location.
var size = this.bubble_.getBubbleSize();
this.bubble_.setBubbleSize(size.width, size.height);
} else {
// Dispose of the bubble.
this.bubble_.dispose();
this.bubble_ = null;
this.body_ = null;
}
};
/**
* Bring the warning to the top of the stack when clicked on.
* @param {!Event} e Mouse up event.
* @private
*/
Blockly.Warning.prototype.bodyFocus_ = function(e) {
this.bubble_.promote_();
};
/**
* Set this warning's text.
* @param {string} text Warning text (or '' to delete).
* @param {string} id An ID for this text entry to be able to maintain
* multiple warnings.
*/
Blockly.Warning.prototype.setText = function(text, id) {
if (this.text_[id] == text) {
return;
}
if (text) {
this.text_[id] = text;
} else {
delete this.text_[id];
}
if (this.isVisible()) {
this.setVisible(false);
this.setVisible(true);
}
};
/**
* Get this warning's texts.
* @return {string} All texts concatenated into one string.
*/
Blockly.Warning.prototype.getText = function() {
var allWarnings = [];
for (var id in this.text_) {
allWarnings.push(this.text_[id]);
}
return allWarnings.join('\n');
};
/**
* Dispose of this warning.
*/
Blockly.Warning.prototype.dispose = function() {
this.block_.warning = null;
Blockly.Icon.prototype.dispose.call(this);
};
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