blockly/webview.html at master · RevolutionRobotics/blockly · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
<!DOCTYPE html>
<!-- HTML file to host Blockly in a mobile WebView. -->
<html>

<head>
  <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1" />
  <!-- Auto generated from source -->
  <script src="blockly_compressed.js"></script>
  <script src="blocks_compressed.js"></script>
  <!-- For real time generation -->
  <script src="python_compressed.js"></script>
  <!-- TODO: Select msg file based on locale. -->
  <script src="msg/js/en.js"></script>
  <script src="toolbox/toolboxes.js"></script>
  <script src="toolbox/tabs.js"></script>
  <link rel="stylesheet" href="./style.css">
</head>

<body>
  <div id="blocklyDiv"></div>
  <script>
    var initialLevel = 1;
    var workspace = Blockly.inject('blocklyDiv', {
      toolbox: toolboxes['level' + initialLevel].xml,
      media: './media/',
      renderer: 'zelos',
      sounds: false,
      zoom:
         {controls: false,
          wheel: true,
          startScale: 0.7,
          maxScale: 3,
          minScale: 0.3,
          scaleSpeed: 1.2}
    });

    var METHOD_SIGNATURE = {
      LOAD_XML_PROGRAM: 'NativeBridge.loadXMLProgram', // Native -> JS, xmlString: String
      SAVE_PROGRAM: 'NativeBridge.saveProgram', // Native -> JS
      CLEAR_WORKSPACE: 'NativeBridge.clearWorkspace', // Native -> JS
      ON_XML_PROGRAM_SAVED: 'NativeBridge.onXMLProgramSaved', //  JS -> Native, xmlString: String
      ON_PYTHON_PROGRAM_SAVED: 'NativeBridge.onPythonProgramSaved', //  JS -> Native, pythonString: String
      ON_VARIABLES_EXPORTED: 'NativeBridge.onVariablesExported' //  JS -> Native, variables: String in 'var1,var2,var3'
    };

    var iosUserAgents = [ 'iPhone', 'iPad', 'iPod' ];
    var iOSBlocklyBrowser = iosUserAgents.indexOf(window.navigator.userAgent) !== -1;

    function createIOSJavascriptBridge(callback) {
      if (iOSBlocklyBrowser) {
        if (window.WKWebViewJavascriptBridge) {
          return callback(WKWebViewJavascriptBridge)
        }
        if (window.WKWVJBCallbacks) {
          return window.WKWVJBCallbacks.push(callback)
        }
        window.WKWVJBCallbacks = [callback]
        window.webkit.messageHandlers.iOS_Native_InjectJavascript.postMessage(null)
      }
    }

    function redraw() {
      var workspace = Blockly.mainWorkspace;

      var childBlock = workspace.newBlock('text');
      childBlock.setFieldValue('Loading...', 'TEXT');
      childBlock.initSvg();
      childBlock.render();

      setTimeout(() => {
        workspace.clear();
      });
    };

    window.addEventListener('load', (event) => {
      redraw();
    });

    function loadXMLProgram(xmlString) {
      var xml = Blockly.Xml.textToDom(xmlString);
      Blockly.mainWorkspace.clear();
      Blockly.Xml.domToWorkspace(xml, Blockly.mainWorkspace);
    };

    function saveProgram() {
      saveProgramWithBridge()
    };

    function saveProgramWithBridge(bridge) {
      var xml = Blockly.Xml.workspaceToDom(Blockly.mainWorkspace, true);
      var xmlText = Blockly.Xml.domToText(xml);
      var variablesArray = Blockly.Variables.allUsedVarModels(Blockly.mainWorkspace);
      var variables = variablesArray ? variablesArray.map(variable => variable.name).join(",") : "";
      var pythonCode = Blockly.Python.workspaceToCode(Blockly.mainWorkspace);

      if (iOSBlocklyBrowser && bridge) {
        bridge.callHandler(METHOD_SIGNATURE.ON_PYTHON_PROGRAM_SAVED, {
          parameter: pythonCode
        })
        bridge.callHandler(METHOD_SIGNATURE.ON_XML_PROGRAM_SAVED, {
          parameter: xmlText
        })
        bridge.callHandler(METHOD_SIGNATURE.ON_VARIABLES_EXPORTED, {
          parameter: variables
        })
        return
      }

      NativeBridge.onXMLProgramSaved(xmlText);
      NativeBridge.onPythonProgramSaved(pythonCode);
      NativeBridge.onVariablesExported(variables);
    }

    function clearWorkspace() {
      Blockly.mainWorkspace.clear();
    }

    function closeToolbox() {
      Blockly.mainWorkspace.toolbox_.flyout_.hide();
      restoreCategories();
    }

    function restoreCategories() {
      var elements = document.getElementsByClassName('blocklyTreeRow blocklyTreeSelected');

      [].forEach.call(elements, function (el) {
        el.classList.remove("blocklyTreeSelected");
        el.style.removeProperty("background-color");
      });
    }

    createIOSJavascriptBridge(function (bridge) {
      bridge.registerHandler(METHOD_SIGNATURE.LOAD_XML_PROGRAM, function (xmlString) {
        loadXMLProgram(xmlString)
      })

      bridge.registerHandler(METHOD_SIGNATURE.SAVE_PROGRAM, function () {
        saveProgramWithBridge(bridge)
      })

      bridge.registerHandler(METHOD_SIGNATURE.CLEAR_WORKSPACE, function () {
        clearWorkspace()
      })
    });

    renderTabs(initialLevel);

  </script>
</body>

</html>