Added some tests as initial starting point.
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require "camping"
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require "markaby"
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require "pathname"
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Camping.goes :Plemp
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Markaby::Builder.set(:indent, 2)
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PUBLIC_DIR = Pathname.new(__FILE__).dirname + "public"
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module Plemp::Controllers
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class Index
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def get
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render :main
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end
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end
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class PublicX
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MIME_TYPES = {'.css' => 'text/css',
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'.js' => 'text/javascript',
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'.jpg' => 'image/jpeg'}
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def get(path)
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@headers['Content-Type'] = MIME_TYPES[path[/\.\w+$/, 0]] || "text/plain"
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unless path.include? ".." # prevent directory traversal attacks
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@headers['X-Sendfile'] = "#{PUBLIC_DIR}/#{path}"
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else
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@status = "403"
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"403 - Invalid path"
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end
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end
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end
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class SaveposXXX
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def post(id, top, left)
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$stderr.puts("Got: top: #{top}, left: #{left}")
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""
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end
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end
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end
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module Plemp::Views
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def layout
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xhtml_strict do
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head do
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title "Plemp!"
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['drag', 'prototype', 'effects', 'controls'].each do |js|
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script :src => R(PublicX, "#{js}.js"), :type => "text/javascript"
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end
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end
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body do
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self << yield
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end
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end
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end
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def main
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div.first! :style => "position:absolute;top:120px;left:100px",
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:onmousedown => "drag(event)" do "First" end
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div.second! :style => "position:absolute;top:170px;left:300px",
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:onmousedown => "drag(event)",
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:onmouseup => _savepos do "Second" end
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end
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def _savepos
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"new Ajax.Request('http://localhost:3301/savepos/' + " +
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"this.id + '/' + this.style.top + '/' + this.style.left); " +
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"return false;"
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end
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end
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// Global object to hold drag information.
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var dragObj = new Object();
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dragObj.zIndex = 0;
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function drag(event, id) {
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var x, y;
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// If an element id was given, find it. Otherwise use the element being
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// clicked on.
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if (id)
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dragObj.elNode = document.getElementById(id);
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else {
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dragObj.elNode = event.target;
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// If this is a text node, use its parent element.
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if (dragObj.elNode.nodeType == 3)
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dragObj.elNode = dragObj.elNode.parentNode;
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}
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// Get cursor position with respect to the page.
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x = event.clientX + window.scrollX;
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y = event.clientY + window.scrollY;
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// Save starting positions of cursor and element.
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dragObj.cursorStartX = x;
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dragObj.cursorStartY = y;
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dragObj.elStartLeft = parseInt(dragObj.elNode.style.left, 10);
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dragObj.elStartTop = parseInt(dragObj.elNode.style.top, 10);
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if (isNaN(dragObj.elStartLeft)) dragObj.elStartLeft = 0;
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if (isNaN(dragObj.elStartTop)) dragObj.elStartTop = 0;
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// Update element's z-index.
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dragObj.elNode.style.zIndex = ++dragObj.zIndex;
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// Capture mousemove and mouseup events on the page.
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document.addEventListener("mousemove", dragGo, true);
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document.addEventListener("mouseup", dragStop, true);
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event.preventDefault();
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}
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function dragGo(event) {
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var x, y;
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// Get cursor position with respect to the page.
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x = event.clientX + window.scrollX;
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y = event.clientY + window.scrollY;
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// Move drag element by the same amount the cursor has moved.
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dragObj.elNode.style.left =
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(dragObj.elStartLeft + x - dragObj.cursorStartX) + "px";
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dragObj.elNode.style.top =
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(dragObj.elStartTop + y - dragObj.cursorStartY) + "px";
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event.preventDefault();
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}
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function dragStop(event) {
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// Stop capturing mousemove and mouseup events.
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document.removeEventListener("mousemove", dragGo, true);
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document.removeEventListener("mouseup", dragStop, true);
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}
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