chrome/test/data/pdf/test_util.js

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 // Utilities that are used in multiple tests.
   6 function MockWindow(width, height, sizer) {
   7   this.innerWidth = width;
   8   this.innerHeight = height;
   9   this.addEventListener = function(e, f) {
  10     if (e == 'scroll')
  11       this.scrollCallback = f;
  12     if (e == 'resize')
  13       this.resizeCallback = f;
  14   };
  15   this.scrollTo = function(x, y) {
  16     if (sizer) {
  17       x = Math.min(x, parseInt(sizer.style.width) - width);
  18       y = Math.min(y, parseInt(sizer.style.height) - height);
  19     }
  20     this.pageXOffset = Math.max(0, x);
  21     this.pageYOffset = Math.max(0, y);
  22     this.scrollCallback();
  23   };
  24   if (sizer) {
  25     sizer.resizeCallback_ = function() {
  26       this.scrollTo(this.pageXOffset, this.pageYOffset);
  27     }.bind(this);
  28   }
  29   this.pageXOffset = 0;
  30   this.pageYOffset = 0;
  31   this.scrollCallback = null;
  32   this.resizeCallback = null;
  33 }
  34
  35 function MockSizer() {
  36   var sizer = this;
  37   this.style = {
  38     width_: '0px',
  39     height_: '0px',
  40     get height() { return this.height_; },
  41     set height(height) {
  42       this.height_ = height;
  43       if (sizer.resizeCallback_)
  44         sizer.resizeCallback_();
  45     },
  46     get width() { return this.width_; },
  47     set width(width) {
  48       this.width_ = width;
  49       if (sizer.resizeCallback_)
  50         sizer.resizeCallback_();
  51     },
  52   };
  53 }
  54
  55 function MockViewportChangedCallback() {
  56   this.wasCalled = false;
  57   this.callback = function() {
  58     this.wasCalled = true;
  59   }.bind(this);
  60   this.reset = function() {
  61     this.wasCalled = false;
  62   };
  63 }
  64
  65 function MockDocumentDimensions(width, height) {
  66   this.width = width || 0;
  67   this.height = height ? height : 0;
  68   this.pageDimensions = [];
  69   this.addPage = function(w, h) {
  70     var y = 0;
  71     if (this.pageDimensions.length != 0) {
  72       y = this.pageDimensions[this.pageDimensions.length - 1].y +
  73           this.pageDimensions[this.pageDimensions.length - 1].height;
  74     }
  75     this.width = Math.max(this.width, w);
  76     this.height += h;
  77     this.pageDimensions.push({
  78       x: 0,
  79       y: y,
  80       width: w,
  81       height: h
  82     });
  83   };
  84   this.reset = function() {
  85     this.width = 0;
  86     this.height = 0;
  87     this.pageDimensions = [];
  88   };
  89 }