Add ability to filter out compiler warnings

src/app/tabs/compile-tab.js

@@ -35,6 +35,7 @@ module.exports = class CompileTab {
       maxTime: 1000,
       timeout: 300
     }
+    self._opts.config.set('hideWarnings', false)
     self._events.editor.register('contentChanged', scheduleCompilation)
     self._events.editor.register('sessionSwitched', scheduleCompilation)
     function scheduleCompilation () {
@@ -113,7 +114,13 @@ module.exports = class CompileTab {
       if (data.errors && data.errors.length) {
         error = true
         data.errors.forEach(function (err) {
+          if (self._opts.config.get('hideWarnings')) {
+            if (err.severity !== 'warning') {
               self._opts.renderer.error(err.formattedMessage, self._view.errorContainer, {type: err.severity})
+            }
+          } else {
+            self._opts.renderer.error(err.formattedMessage, self._view.errorContainer, {type: err.severity})
+          }
         })
       }
       if (!error && data.contracts) {
@@ -137,6 +144,7 @@ module.exports = class CompileTab {
     self._view.compileIcon = yo`<i class="fa fa-refresh ${css.icon}" aria-hidden="true"></i>`
     self._view.compileButton = yo`<div class="${css.compileButton}" onclick=${compile} id="compile" title="Compile source code">${self._view.compileIcon} Start to compile</div>`
     self._view.autoCompile = yo`<input class="${css.autocompile}" onchange=${updateAutoCompile} id="autoCompile" type="checkbox" title="Auto compile">`
+    self._view.hideWarningsBox = yo`<input class="${css.autocompile}" onchange=${hideWarnings} id="hideWarningsBox" type="checkbox" title="Hide warnings">`
     if (self.data.autoCompile) self._view.autoCompile.setAttribute('checked', '')
     self._view.compileContainer = yo`
       <div class="${css.compileContainer}">
@@ -147,6 +155,10 @@ module.exports = class CompileTab {
             <span class="${css.autocompileText}">Auto compile</span>
           </div>
           ${self._view.warnCompilationSlow}
+          <div class=${css.hideWarningsContainer}>
+            ${self._view.hideWarningsBox}
+            <span class="${css.autocompileText}">Hide warnings</span>
+          </div>
         </div>
       </div>`
     self._view.errorContainer = yo`<div class='error'></div>`
@@ -181,6 +193,10 @@ module.exports = class CompileTab {
     }
     function updateAutoCompile (event) { self._opts.config.set('autoCompile', self._view.autoCompile.checked) }
     function compile (event) { self._api.runCompiler() }
+    function hideWarnings (event) {
+      self._opts.config.set('hideWarnings', !self._opts.config.get('hideWarnings'))
+      self._api.runCompiler()
+    }
     function details () {
       const select = self._view.contractNames
       if (select.children.length > 0 && select.selectedIndex >= 0) {
@@ -277,6 +293,11 @@ const css = csjs`
     display: flex;
     align-items: center;
   }
+  .hideWarningsContainer {
+    display: flex;
+    align-items: center;
+    margin-left: 2%
+  }
   .autocompile {}
   .autocompileTitle {
     font-weight: bold;