webogram-i2p/app/js/lib/utils.js

/*!
 * Webogram v0.3.5 - messaging web application for MTProto
 * https://github.com/zhukov/webogram
 * Copyright (C) 2014 Igor Zhukov <igor.beatle@gmail.com>
 * https://github.com/zhukov/webogram/blob/master/LICENSE
 */

var _logTimer = (new Date()).getTime();
function dT () {
  return '[' + (((new Date()).getTime() - _logTimer) / 1000).toFixed(3) + ']';
}

function checkClick (e, noprevent) {
  if (e.which == 1 && (e.ctrlKey || e.metaKey) || e.which == 2) {
    return true;
  }

  if (!noprevent) {
    e.preventDefault();
  }

  return false;
}

function checkDragEvent(e) {
  if (!e || e.target && (e.target.tagName == 'IMG' || e.target.tagName == 'A')) return false;
  if (e.dataTransfer && e.dataTransfer.types) {
    for (var i = 0; i < e.dataTransfer.types.length; i++) {
      if (e.dataTransfer.types[i] == 'Files') {
        return true;
      }
    }
  } else {
    return true;
  }

  return false;
}

function cancelEvent (event) {
  event = event || window.event;
  if (event) {
    event = event.originalEvent || event;

    if (event.stopPropagation) event.stopPropagation();
    if (event.preventDefault) event.preventDefault();
  }

  return false;
}

function onCtrlEnter (textarea, cb) {
  $(textarea).on('keydown', function (e) {
    if (e.keyCode == 13 && (e.ctrlKey || e.metaKey)) {
      cb();
      return cancelEvent(e);
    }
  });
}

function onContentLoaded (cb) {
  setTimeout(cb, 0);
};

function tsNow (seconds) {
  var t = +new Date() + (window.tsOffset || 0);
  return seconds ? Math.floor(t / 1000) : t;
}

function safeReplaceObject (wasObject, newObject) {
  for (var key in wasObject) {
    if (!newObject.hasOwnProperty(key) && key.charAt(0) != '$') {
      delete wasObject[key];
    }
  }
  for (var key in newObject) {
    if (newObject.hasOwnProperty(key)) {
      wasObject[key] = newObject[key];
    }
  }
}

function listMergeSorted (list1, list2) {
  list1 = list1 || [];
  list2 = list2 || [];

  var result = angular.copy(list1);

  var minID = list1.length ? list1[list1.length - 1] : 0xFFFFFFFF;
  for (var i = 0; i < list2.length; i++) {
    if (list2[i] < minID) {
      result.push(list2[i]);
    }
  }

  return result;
}

function listUniqSorted (list) {
  list = list || [];
  var resultList = [],
      prev = false;
  for (var i = 0; i < list.length; i++) {
    if (list[i] !== prev) {
      resultList.push(list[i])
    }
    prev = list[i];
  }

  return resultList;
}

function templateUrl (tplName) {
  return 'partials/' + (Config.Mobile ? 'mobile' : 'desktop') + '/' + tplName + '.html';
}

function encodeEntities(value) {
  return value.
    replace(/&/g, '&amp;').
    replace(/([^\#-~| |!])/g, function (value) { // non-alphanumeric
      return '&#' + value.charCodeAt(0) + ';';
    }).
    replace(/</g, '&lt;').
    replace(/>/g, '&gt;');
}

function calcImageInBox(imageW, imageH, boxW, boxH, noZooom) {
  var boxedImageW = boxW;
  var boxedImageH = boxH;

  if ((imageW / imageH) > (boxW / boxH)) {
    boxedImageH = parseInt(imageH * boxW / imageW);
  }
  else {
    boxedImageW = parseInt(imageW * boxH / imageH);
    if (boxedImageW > boxW) {
      boxedImageH = parseInt(boxedImageH * boxW / boxedImageW);
      boxedImageW = boxW;
    }
  }

  if (Config.Navigator.retina) {
    imageW = Math.floor(imageW / 2);
    imageH = Math.floor(imageH / 2);
  }

  if (noZooom && boxedImageW >= imageW && boxedImageH >= imageH) {
    boxedImageW = imageW;
    boxedImageH = imageH;
  }

  return {w: boxedImageW, h: boxedImageH};
}