added pages and keyboard navigation

2016-11-20 11:43:52 +01:00
parent 5a3856e75b
commit 6850fa4d50
191 changed files with 34413 additions and 0 deletions
@@ -0,0 +1,131 @@
+
+function KeyCombo(keyComboStr) {
+  this.sourceStr = keyComboStr;
+  this.subCombos = KeyCombo.parseComboStr(keyComboStr);
+  this.keyNames  = this.subCombos.reduce(function(memo, nextSubCombo) {
+    return memo.concat(nextSubCombo);
+  });
+}
+
+// TODO: Add support for key combo sequences
+KeyCombo.sequenceDeliminator = '>>';
+KeyCombo.comboDeliminator    = '>';
+KeyCombo.keyDeliminator      = '+';
+
+KeyCombo.parseComboStr = function(keyComboStr) {
+  var subComboStrs = KeyCombo._splitStr(keyComboStr, KeyCombo.comboDeliminator);
+  var combo        = [];
+
+  for (var i = 0 ; i < subComboStrs.length; i += 1) {
+    combo.push(KeyCombo._splitStr(subComboStrs[i], KeyCombo.keyDeliminator));
+  }
+  return combo;
+};
+
+KeyCombo.prototype.check = function(pressedKeyNames) {
+  var startingKeyNameIndex = 0;
+  for (var i = 0; i < this.subCombos.length; i += 1) {
+    startingKeyNameIndex = this._checkSubCombo(
+      this.subCombos[i],
+      startingKeyNameIndex,
+      pressedKeyNames
+    );
+    if (startingKeyNameIndex === -1) { return false; }
+  }
+  return true;
+};
+
+KeyCombo.prototype.isEqual = function(otherKeyCombo) {
+  if (
+    !otherKeyCombo ||
+    typeof otherKeyCombo !== 'string' &&
+    typeof otherKeyCombo !== 'object'
+  ) { return false; }
+
+  if (typeof otherKeyCombo === 'string') {
+    otherKeyCombo = new KeyCombo(otherKeyCombo);
+  }
+
+  if (this.subCombos.length !== otherKeyCombo.subCombos.length) {
+    return false;
+  }
+  for (var i = 0; i < this.subCombos.length; i += 1) {
+    if (this.subCombos[i].length !== otherKeyCombo.subCombos[i].length) {
+      return false;
+    }
+  }
+
+  for (var i = 0; i < this.subCombos.length; i += 1) {
+    var subCombo      = this.subCombos[i];
+    var otherSubCombo = otherKeyCombo.subCombos[i].slice(0);
+
+    for (var j = 0; j < subCombo.length; j += 1) {
+      var keyName = subCombo[j];
+      var index   = otherSubCombo.indexOf(keyName);
+
+      if (index > -1) {
+        otherSubCombo.splice(index, 1);
+      }
+    }
+    if (otherSubCombo.length !== 0) {
+      return false;
+    }
+  }
+
+  return true;
+};
+
+KeyCombo._splitStr = function(str, deliminator) {
+  var s  = str;
+  var d  = deliminator;
+  var c  = '';
+  var ca = [];
+
+  for (var ci = 0; ci < s.length; ci += 1) {
+    if (ci > 0 && s[ci] === d && s[ci - 1] !== '\\') {
+      ca.push(c.trim());
+      c = '';
+      ci += 1;
+    }
+    c += s[ci];
+  }
+  if (c) { ca.push(c.trim()); }
+
+  return ca;
+};
+
+KeyCombo.prototype._checkSubCombo = function(subCombo, startingKeyNameIndex, pressedKeyNames) {
+  subCombo = subCombo.slice(0);
+  pressedKeyNames = pressedKeyNames.slice(startingKeyNameIndex);
+
+  var endIndex = startingKeyNameIndex;
+  for (var i = 0; i < subCombo.length; i += 1) {
+
+    var keyName = subCombo[i];
+    if (keyName[0] === '\\') {
+      var escapedKeyName = keyName.slice(1);
+      if (
+        escapedKeyName === KeyCombo.comboDeliminator ||
+        escapedKeyName === KeyCombo.keyDeliminator
+      ) {
+        keyName = escapedKeyName;
+      }
+    }
+
+    var index = pressedKeyNames.indexOf(keyName);
+    if (index > -1) {
+      subCombo.splice(i, 1);
+      i -= 1;
+      if (index > endIndex) {
+        endIndex = index;
+      }
+      if (subCombo.length === 0) {
+        return endIndex;
+      }
+    }
+  }
+  return -1;
+};
+
+
+module.exports = KeyCombo;