1 | /**
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2 | * @license
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3 | * Visual Blocks Editor
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4 | *
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5 | * Copyright 2012 Google Inc.
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6 | * https://developers.google.com/blockly/
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7 | *
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8 | * Licensed under the Apache License, Version 2.0 (the "License");
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9 | * you may not use this file except in compliance with the License.
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10 | * You may obtain a copy of the License at
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11 | *
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12 | * http://www.apache.org/licenses/LICENSE-2.0
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13 | *
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14 | * Unless required by applicable law or agreed to in writing, software
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15 | * distributed under the License is distributed on an "AS IS" BASIS,
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16 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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17 | * See the License for the specific language governing permissions and
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18 | * limitations under the License.
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19 | */
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20 |
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21 | /**
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22 | * @fileoverview Loop blocks for Blockly.
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23 | * @author fraser@google.com (Neil Fraser)
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24 | */
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25 | using System;
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26 | using System.Linq;
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27 | using System.Text;
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28 | using Bridge;
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29 | using Bridge.Html5;
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30 | using Bridge.jQuery2;
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31 |
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32 | namespace WebMrbc
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33 | {
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34 | public class Loops
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35 | {
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36 | /**
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37 | * Common HSV hue for all blocks in this category.
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38 | */
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39 | public static int HUE = 120;
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40 | }
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41 |
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42 | public class ControlsRepeatExtBlock : Block
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43 | {
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44 | public const string type_name = "controls_repeat_ext";
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45 |
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46 | public ControlsRepeatExtBlock()
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47 | : base(type_name)
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48 | {
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49 | }
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50 |
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51 | /**
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52 | * Block for repeat n times (external number).
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53 | * @this Blockly.Block
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54 | */
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55 | public void init()
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56 | {
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57 | this.jsonInit(new {
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58 | message0 = Msg.CONTROLS_REPEAT_TITLE,
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59 | args0 = new object[] {
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60 | new {
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61 | type = "input_value",
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62 | name = "TIMES",
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63 | check = "Number"
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64 | }
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65 | },
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66 | previousStatement = (Union<string, string[]>)null,
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67 | nextStatement = (Union<string, string[]>)null,
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68 | colour = Loops.HUE,
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69 | tooltip = Msg.CONTROLS_REPEAT_TOOLTIP,
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70 | helpUrl = Msg.CONTROLS_REPEAT_HELPURL
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71 | });
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72 | this.appendStatementInput("DO")
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73 | .appendField(Msg.CONTROLS_REPEAT_INPUT_DO);
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74 | }
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75 | }
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76 |
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77 | public class ControlsRepeatBlock : Block
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78 | {
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79 | public const string type_name = "controls_repeat";
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80 |
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81 | public ControlsRepeatBlock()
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82 | : base(type_name)
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83 | {
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84 | }
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85 |
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86 | /**
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87 | * Block for repeat n times (internal number).
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88 | * The "controls_repeat_ext" block is preferred as it is more flexible.
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89 | * @this Blockly.Block
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90 | */
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91 | public void init()
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92 | {
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93 | this.jsonInit(new {
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94 | message0 = Msg.CONTROLS_REPEAT_TITLE,
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95 | args0 = new object[] {
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96 | new {
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97 | type = "field_number",
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98 | name = "TIMES",
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99 | value = 10,
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100 | min = 0,
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101 | precision = 1
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102 | }
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103 | },
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104 | previousStatement = (Union<string, string[]>)null,
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105 | nextStatement = (Union<string, string[]>)null,
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106 | colour = Loops.HUE,
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107 | tooltip = Msg.CONTROLS_REPEAT_TOOLTIP,
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108 | helpUrl = Msg.CONTROLS_REPEAT_HELPURL
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109 | });
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110 | this.appendStatementInput("DO")
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111 | .appendField(Msg.CONTROLS_REPEAT_INPUT_DO);
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112 | }
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113 | }
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114 |
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115 | public class ControlsWhileUntilBlock : Block
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116 | {
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117 | public const string type_name = "controls_whileUntil";
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118 |
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119 | public ControlsWhileUntilBlock()
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120 | : base(type_name)
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121 | {
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122 | }
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123 |
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124 | /**
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125 | * Block for "do while/until" loop.
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126 | * @this Blockly.Block
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127 | */
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128 | public void init()
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129 | {
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130 | var OPERATORS = new[] {
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131 | new [] {Msg.CONTROLS_WHILEUNTIL_OPERATOR_WHILE, "WHILE"},
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132 | new [] {Msg.CONTROLS_WHILEUNTIL_OPERATOR_UNTIL, "UNTIL"}
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133 | };
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134 | this.setHelpUrl(Msg.CONTROLS_WHILEUNTIL_HELPURL);
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135 | this.setColour(Loops.HUE);
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136 | this.appendValueInput("BOOL")
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137 | .setCheck("Boolean")
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138 | .appendField(new FieldDropdown(OPERATORS), "MODE");
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139 | this.appendStatementInput("DO")
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140 | .appendField(Msg.CONTROLS_WHILEUNTIL_INPUT_DO);
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141 | this.setPreviousStatement(true);
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142 | this.setNextStatement(true);
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143 | // Assign "this" to a variable for use in the tooltip closure below.
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144 | var thisBlock = this;
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145 | this.setTooltip(new Func<string>(() => {
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146 | switch (thisBlock.getFieldValue("MODE")) {
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147 | case "WHILE": return Msg.CONTROLS_WHILEUNTIL_TOOLTIP_WHILE;
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148 | case "UNTIL": return Msg.CONTROLS_WHILEUNTIL_TOOLTIP_UNTIL;
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149 | }
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150 | return "";
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151 | }));
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152 | }
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153 | }
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154 |
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155 | public class ControlsForBlock : Block
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156 | {
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157 | public const string type_name = "controls_for";
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158 |
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159 | public ControlsForBlock()
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160 | : base(type_name)
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161 | {
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162 | }
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163 |
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164 | /**
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165 | * Block for "for" loop.
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166 | * @this Blockly.Block
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167 | */
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168 | public void init()
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169 | {
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170 | this.jsonInit(new {
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171 | message0 = Msg.CONTROLS_FOR_TITLE,
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172 | args0 = new object[] {
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173 | new {
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174 | type = "field_variable",
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175 | name = "VAR",
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176 | variable = (string)null
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177 | },
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178 | new {
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179 | type = "input_value",
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180 | name = "FROM",
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181 | check = "Number",
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182 | align = "RIGHT"
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183 | },
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184 | new {
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185 | type = "input_value",
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186 | name = "TO",
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187 | check = "Number",
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188 | align = "RIGHT"
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189 | },
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190 | new {
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191 | type = "input_value",
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192 | name = "BY",
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193 | check = "Number",
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194 | align = "RIGHT"
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195 | }
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196 | },
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197 | inputsInline = true,
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198 | previousStatement = (Union<string, string[]>)null,
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199 | nextStatement = (Union<string, string[]>)null,
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200 | colour = Loops.HUE,
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201 | helpUrl = Msg.CONTROLS_FOR_HELPURL
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202 | });
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203 | this.appendStatementInput("DO")
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204 | .appendField(Msg.CONTROLS_FOR_INPUT_DO);
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205 | // Assign "this" to a variable for use in the tooltip closure below.
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206 | var thisBlock = this;
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207 | this.setTooltip(new Func<string>(() => {
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208 | return Msg.CONTROLS_FOR_TOOLTIP.Replace("%1", thisBlock.getFieldValue("VAR"));
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209 | }));
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210 | }
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211 |
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212 | /**
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213 | * Add menu option to create getter block for loop variable.
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214 | * @param {!Array} options List of menu options to add to.
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215 | * @this Blockly.Block
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216 | */
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217 | public void customContextMenu(object[] options)
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218 | {
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219 | if (!this.isCollapsed()) {
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220 | var option = new ContextMenuOption() { enabled = true };
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221 | var name = this.getFieldValue("VAR");
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222 | option.text = Msg.VARIABLES_SET_CREATE_GET.Replace("%1", name);
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223 | var xmlField = goog.dom.createDom("field", null, name);
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224 | xmlField.SetAttribute("name", "VAR");
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225 | var xmlBlock = goog.dom.createDom("block", null, xmlField);
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226 | xmlBlock.SetAttribute("type", VariablesGetBlock.type_name);
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227 | option.callback = ContextMenu.callbackFactory(this, xmlBlock);
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228 | options.Push(option);
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229 | }
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230 | }
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231 | }
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232 |
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233 | public class ControlsForEachBlock : Block
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234 | {
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235 | public const string type_name = "controls_forEach";
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236 |
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237 | public ControlsForEachBlock()
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238 | : base(type_name)
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239 | {
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240 | }
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241 |
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242 | /**
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243 | * Block for "for each" loop.
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244 | * @this Blockly.Block
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245 | */
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246 | public void init()
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247 | {
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248 | this.jsonInit(new {
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249 | message0 = Msg.CONTROLS_FOREACH_TITLE,
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250 | args0 = new object[] {
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251 | new {
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252 | type = "field_variable",
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253 | name = "VAR",
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254 | variable = (string)null
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255 | },
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256 | new {
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257 | type = "input_value",
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258 | name = "LIST",
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259 | check = "Array"
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260 | }
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261 | },
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262 | previousStatement = (Union<string, string[]>)null,
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263 | nextStatement = (Union<string, string[]>)null,
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264 | colour = Loops.HUE,
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265 | helpUrl = Msg.CONTROLS_FOREACH_HELPURL
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266 | });
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267 | this.appendStatementInput("DO")
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268 | .appendField(Msg.CONTROLS_FOREACH_INPUT_DO);
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269 | // Assign "this" to a variable for use in the tooltip closure below.
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270 | var thisBlock = this;
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271 | this.setTooltip(new Func<string>(() => {
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272 | return Msg.CONTROLS_FOREACH_TOOLTIP.Replace("%1", thisBlock.getFieldValue("VAR"));
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273 | }));
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274 | }
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275 |
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276 | /**
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277 | * Add menu option to create getter block for loop variable.
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278 | * @param {!Array} options List of menu options to add to.
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279 | * @this Blockly.Block
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280 | */
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281 | public void customContextMenu(object[] options)
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282 | {
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283 | if (!this.isCollapsed()) {
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284 | var option = new ContextMenuOption() { enabled = true };
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285 | var name = this.getFieldValue("VAR");
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286 | option.text = Msg.VARIABLES_SET_CREATE_GET.Replace("%1", name);
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287 | var xmlField = goog.dom.createDom("field", null, name);
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288 | xmlField.SetAttribute("name", "VAR");
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289 | var xmlBlock = goog.dom.createDom("block", null, xmlField);
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290 | xmlBlock.SetAttribute("type", VariablesGetBlock.type_name);
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291 | option.callback = ContextMenu.callbackFactory(this, xmlBlock);
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292 | options.Push(option);
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293 | }
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294 | }
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295 | }
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296 |
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297 | public class ControlsFlowStatementsBlock : Block
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298 | {
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299 | public const string type_name = "controls_flow_statements";
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300 |
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301 | public ControlsFlowStatementsBlock()
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302 | : base(type_name)
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303 | {
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304 | }
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305 |
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306 | /**
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307 | * Block for flow statements: continue, break.
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308 | * @this Blockly.Block
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309 | */
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310 | public void init()
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311 | {
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312 | var OPERATORS = new[] {
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313 | new [] {Msg.CONTROLS_FLOW_STATEMENTS_OPERATOR_BREAK, "BREAK"},
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314 | new [] {Msg.CONTROLS_FLOW_STATEMENTS_OPERATOR_CONTINUE, "CONTINUE"}
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315 | };
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316 | this.setHelpUrl(Msg.CONTROLS_FLOW_STATEMENTS_HELPURL);
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317 | this.setColour(Loops.HUE);
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318 | this.appendDummyInput()
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319 | .appendField(new FieldDropdown(OPERATORS), "FLOW");
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320 | this.setPreviousStatement(true);
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321 | // Assign "this" to a variable for use in the tooltip closure below.
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322 | var thisBlock = this;
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323 | this.setTooltip(new Func<string>(() => {
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324 | switch (thisBlock.getFieldValue("FLOW")) {
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325 | case "BREAK": return Msg.CONTROLS_FLOW_STATEMENTS_TOOLTIP_BREAK;
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326 | case "CONTINUE": return Msg.CONTROLS_FLOW_STATEMENTS_TOOLTIP_CONTINUE;
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327 | }
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328 | return "";
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329 | }));
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330 | }
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331 |
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332 | /**
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333 | * Called whenever anything on the workspace changes.
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334 | * Add warning if this flow block is not nested inside a loop.
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335 | * @param {!Abstract} e Change event.
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336 | * @this Blockly.Block
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337 | */
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338 | public void onchange(Abstract e)
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339 | {
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340 | if (((WorkspaceSvg)this.workspace).isDragging()) {
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341 | return; // Don't change state at the start of a drag.
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342 | }
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343 | var legal = false;
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344 | // Is the block nested in a loop?
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345 | var block = (Block)this;
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346 | do {
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347 | if (Array.IndexOf(this.LOOP_TYPES, block.type) != -1) {
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348 | legal = true;
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349 | break;
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350 | }
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351 | block = block.getSurroundParent();
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352 | } while (block != null);
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353 | if (legal) {
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354 | this.setWarningText(null);
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355 | if (!this.isInFlyout) {
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356 | this.setDisabled(false);
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357 | }
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358 | }
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359 | else {
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360 | this.setWarningText(Msg.CONTROLS_FLOW_STATEMENTS_WARNING);
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361 | if (!this.isInFlyout && !this.getInheritedDisabled()) {
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362 | this.setDisabled(true);
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363 | }
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364 | }
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365 | }
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366 | /**
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367 | * List of block types that are loops and thus do not need warnings.
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368 | * To add a new loop type add this to your code:
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369 | * Blockly.Blocks["controls_flow_statements"].LOOP_TYPES.push("custom_loop");
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370 | */
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371 | string[] LOOP_TYPES = new[] {
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372 | ControlsRepeatBlock .type_name,
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373 | ControlsRepeatExtBlock.type_name,
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374 | ControlsForEachBlock.type_name,
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375 | ControlsForBlock.type_name,
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376 | ControlsWhileUntilBlock.type_name
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377 | };
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378 | }
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379 | }
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