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Adding controls_ifelse block (#722)

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Adding controls_ifelse, an if/else block that is loaded from JSON and does not use mutators. This gives "else" capability to Android & iOS implementations, which don't support JavaScript mutators.

Added this block to the playground simple toolbox and all generators.
This commit is contained in:
Andrew n marshall
2016-10-31 11:00:39 -07:00
committed by GitHub
parent 0156f2e103
commit 72ff6d9ead
8 changed files with 115 additions and 63 deletions
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27
generators/javascript/logic.js
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@@ -32,23 +32,26 @@ goog.require('Blockly.JavaScript');
Blockly.JavaScript['controls_if'] = function(block) {
// If/elseif/else condition.
var n = 0;
var argument = Blockly.JavaScript.valueToCode(block, 'IF' + n,
var code = '', branchCode, conditionCode;
do {
conditionCode = Blockly.JavaScript.valueToCode(block, 'IF' + n,
Blockly.JavaScript.ORDER_NONE) || 'false';
var branch = Blockly.JavaScript.statementToCode(block, 'DO' + n);
var code = 'if (' + argument + ') {\n' + branch + '}';
for (n = 1; n <= block.elseifCount_; n++) {
argument = Blockly.JavaScript.valueToCode(block, 'IF' + n,
Blockly.JavaScript.ORDER_NONE) || 'false';
branch = Blockly.JavaScript.statementToCode(block, 'DO' + n);
code += ' else if (' + argument + ') {\n' + branch + '}';
}
if (block.elseCount_) {
branch = Blockly.JavaScript.statementToCode(block, 'ELSE');
code += ' else {\n' + branch + '}';
branchCode = Blockly.JavaScript.statementToCode(block, 'DO' + n);
code += (n > 0 ? ' else ' : '') +
'if (' + conditionCode + ') {\n' + branchCode + '}';
++n;
} while (block.getInput('IF' + n));
if (block.getInput('ELSE')) {
branchCode = Blockly.JavaScript.statementToCode(block, 'ELSE');
code += ' else {\n' + branchCode + '}';
}
return code + '\n';
};
Blockly.JavaScript['controls_ifelse'] = Blockly.JavaScript['controls_if'];
Blockly.JavaScript['logic_compare'] = function(block) {
// Comparison operator.
var OPERATORS = {