source: temp/trunk/html/test/naka/HTMLArea/popupdiv.js @ 1694

/** This file is derived from PopupDiv, developed by Mihai Bazon for
 * SamWare.net.  Modifications were needed to make it usable in HTMLArea.
 * HTMLArea is a free WYSIWYG online HTML editor from InteractiveTools.com.
 *
 * This file does not function standalone.  It is dependent of global functions
 * defined in HTMLArea-3.0 (htmlarea.js).
 *
 * Please see file htmlarea.js for further details.
 **/

var is_ie = ( (navigator.userAgent.toLowerCase().indexOf("msie") != -1) &&
          (navigator.userAgent.toLowerCase().indexOf("opera") == -1) );
var is_compat = (document.compatMode == "BackCompat");

function PopupDiv(editor, titleText, handler, initFunction) {
    var self = this;

    this.editor = editor;
    this.doc = editor._mdoc;
    this.handler = handler;

    var el = this.doc.createElement("div");
    el.className = "content";

    var popup = this.doc.createElement("div");
    popup.className = "dialog popupdiv";
    this.element = popup;
    var s = popup.style;
    s.position = "absolute";
    s.left = "0px";
    s.top = "0px";

    var title = this.doc.createElement("div");
    title.className = "title";
    this.title = title;
    popup.appendChild(title);

    HTMLArea._addEvent(title, "mousedown", function(ev) {
        self._dragStart(is_ie ? window.event : ev);
    });

    var button = this.doc.createElement("div");
    button.className = "button";
    title.appendChild(button);
    button.innerHTML = "×";
    title.appendChild(this.doc.createTextNode(titleText));
    this.titleText = titleText;

    button.onmouseover = function() {
        this.className += " button-hilite";
    };
    button.onmouseout = function() {
        this.className = this.className.replace(/\s*button-hilite\s*/g, " ");
    };
    button.onclick = function() {
        this.className = this.className.replace(/\s*button-hilite\s*/g, " ");
        self.close();
    };

    popup.appendChild(el);
    this.content = el;

    this.doc.body.appendChild(popup);

    this.dragging = false;
    this.onShow = null;
    this.onClose = null;
    this.modal = false;

    initFunction(this);
};

PopupDiv.currentPopup = null;

PopupDiv.prototype.showAtElement = function(el, mode) {
    this.defaultSize();
    var pos, ew, eh;
    var popup = this.element;
    popup.style.display = "block";
    var w = popup.offsetWidth;
    var h = popup.offsetHeight;
    popup.style.display = "none";
    if (el != window) {
        pos = PopupDiv.getAbsolutePos(el);
        ew = el.offsetWidth;
        eh = el.offsetHeight;
    } else {
        pos = {x:0, y:0};
        var size = PopupDiv.getWindowSize();
        ew = size.x;
        eh = size.y;
    }
    var FX = false, FY = false;
    if (mode.indexOf("l") != -1) {
        pos.x -= w;
        FX = true;
    }
    if (mode.indexOf("r") != -1) {
        pos.x += ew;
        FX = true;
    }
    if (mode.indexOf("t") != -1) {
        pos.y -= h;
        FY = true;
    }
    if (mode.indexOf("b") != -1) {
        pos.y += eh;
        FY = true;
    }
    if (mode.indexOf("c") != -1) {
        FX || (pos.x += Math.round((ew - w) / 2));
        FY || (pos.y += Math.round((eh - h) / 2));
    }
    this.showAt(pos.x, pos.y);
};

PopupDiv.prototype.defaultSize = function() {
    var s = this.element.style;
    var cs = this.element.currentStyle;
    var addX = (is_ie && is_compat) ? (parseInt(cs.borderLeftWidth) +
                       parseInt(cs.borderRightWidth) +
                       parseInt(cs.paddingLeft) +
                       parseInt(cs.paddingRight)) : 0;
    var addY = (is_ie && is_compat) ? (parseInt(cs.borderTopWidth) +
                       parseInt(cs.borderBottomWidth) +
                       parseInt(cs.paddingTop) +
                       parseInt(cs.paddingBottom)) : 0;
    s.display = "block";
    s.width = (this.content.offsetWidth + addX) + "px";
    s.height = (this.content.offsetHeight + this.title.offsetHeight) + "px";
    s.display = "none";
};

PopupDiv.prototype.showAt = function(x, y) {
    this.defaultSize();
    var s = this.element.style;
    s.display = "block";
    s.left = x + "px";
    s.top = y + "px";
    this.hideShowCovered();

    PopupDiv.currentPopup = this;
    HTMLArea._addEvents(this.doc.body, ["mousedown", "click"], PopupDiv.checkPopup);
    HTMLArea._addEvents(this.editor._doc.body, ["mousedown", "click"], PopupDiv.checkPopup);
    if (is_ie && this.modal) {
        this.doc.body.setCapture(false);
        this.doc.body.onlosecapture = function() {
            (PopupDiv.currentPopup) && (this.doc.body.setCapture(false));
        };
    }
    window.event && HTMLArea._stopEvent(window.event);

    if (typeof this.onShow == "function") {
        this.onShow();
    } else if (typeof this.onShow == "string") {
        eval(this.onShow);
    }

    var field = this.element.getElementsByTagName("input")[0];
    if (!field) {
        field = this.element.getElementsByTagName("select")[0];
    }
    if (!field) {
        field = this.element.getElementsByTagName("textarea")[0];
    }
    if (field) {
        field.focus();
    }
};

PopupDiv.prototype.close = function() {
    this.element.style.display = "none";
    PopupDiv.currentPopup = null;
    this.hideShowCovered();
    HTMLArea._removeEvents(this.doc.body, ["mousedown", "click"], PopupDiv.checkPopup);
    HTMLArea._removeEvents(this.editor._doc.body, ["mousedown", "click"], PopupDiv.checkPopup);
    is_ie && this.modal && this.doc.body.releaseCapture();
    if (typeof this.onClose == "function") {
        this.onClose();
    } else if (typeof this.onClose == "string") {
        eval(this.onClose);
    }
    this.element.parentNode.removeChild(this.element);
};

PopupDiv.prototype.getForm = function() {
    var forms = this.content.getElementsByTagName("form");
    return (forms.length > 0) ? forms[0] : null;
};

PopupDiv.prototype.callHandler = function() {
    var tags = ["input", "textarea", "select"];
    var params = new Object();
    for (var ti in tags) {
        var tag = tags[ti];
        var els = this.content.getElementsByTagName(tag);
        for (var j = 0; j < els.length; ++j) {
            var el = els[j];
            params[el.name] = el.value;
        }
    }
    this.handler(this, params);
    return false;
};

PopupDiv.getAbsolutePos = function(el) {
    var r = { x: el.offsetLeft, y: el.offsetTop };
    if (el.offsetParent) {
        var tmp = PopupDiv.getAbsolutePos(el.offsetParent);
        r.x += tmp.x;
        r.y += tmp.y;
    }
    return r;
};

PopupDiv.getWindowSize = function() {
    if (window.innerHeight) {
        return { y: window.innerHeight, x: window.innerWidth };
    }
    if (this.doc.body.clientHeight) {
        return { y: this.doc.body.clientHeight, x: this.doc.body.clientWidth };
    }
    return { y: this.doc.documentElement.clientHeight, x: this.doc.documentElement.clientWidth };
};

PopupDiv.prototype.hideShowCovered = function () {
    var self = this;
    function isContained(el) {
        while (el) {
            if (el == self.element) {
                return true;
            }
            el = el.parentNode;
        }
        return false;
    };
    var tags = new Array("applet", "select");
    var el = this.element;

    var p = PopupDiv.getAbsolutePos(el);
    var EX1 = p.x;
    var EX2 = el.offsetWidth + EX1;
    var EY1 = p.y;
    var EY2 = el.offsetHeight + EY1;

    if (el.style.display == "none") {
        EX1 = EX2 = EY1 = EY2 = 0;
    }

    for (var k = tags.length; k > 0; ) {
        var ar = this.doc.getElementsByTagName(tags[--k]);
        var cc = null;

        for (var i = ar.length; i > 0;) {
            cc = ar[--i];
            if (isContained(cc)) {
                cc.style.visibility = "visible";
                continue;
            }

            p = PopupDiv.getAbsolutePos(cc);
            var CX1 = p.x;
            var CX2 = cc.offsetWidth + CX1;
            var CY1 = p.y;
            var CY2 = cc.offsetHeight + CY1;

            if ((CX1 > EX2) || (CX2 < EX1) || (CY1 > EY2) || (CY2 < EY1)) {
                cc.style.visibility = "visible";
            } else {
                cc.style.visibility = "hidden";
            }
        }
    }
};

PopupDiv.prototype._dragStart = function (ev) {
    if (this.dragging) {
        return false;
    }
    this.dragging = true;
    PopupDiv.currentPopup = this;
    var posX = ev.clientX;
    var posY = ev.clientY;
    if (is_ie) {
        posY += this.doc.body.scrollTop;
        posX += this.doc.body.scrollLeft;
    } else {
        posY += window.scrollY;
        posX += window.scrollX;
    }
    var st = this.element.style;
    this.xOffs = posX - parseInt(st.left);
    this.yOffs = posY - parseInt(st.top);
    HTMLArea._addEvent(this.doc, "mousemove", PopupDiv.dragIt);
    HTMLArea._addEvent(this.doc, "mouseover", HTMLArea._stopEvent);
    HTMLArea._addEvent(this.doc, "mouseup", PopupDiv.dragEnd);
    HTMLArea._stopEvent(ev);
};

PopupDiv.dragIt = function (ev) {
    var popup = PopupDiv.currentPopup;
    if (!(popup && popup.dragging)) {
        return false;
    }
    is_ie && (ev = window.event);
    var posX = ev.clientX;
    var posY = ev.clientY;
    if (is_ie) {
        posY += this.doc.body.scrollTop;
        posX += this.doc.body.scrollLeft;
    } else {
        posY += window.scrollY;
        posX += window.scrollX;
    }
    popup.hideShowCovered();
    var st = popup.element.style;
    st.left = (posX - popup.xOffs) + "px";
    st.top = (posY - popup.yOffs) + "px";
    HTMLArea._stopEvent(ev);
};

PopupDiv.dragEnd = function () {
    var popup = PopupDiv.currentPopup;
    if (!popup) {
        return false;
    }
    popup.dragging = false;
    HTMLArea._removeEvent(popup.doc, "mouseup", PopupDiv.dragEnd);
    HTMLArea._removeEvent(popup.doc, "mouseover", HTMLArea._stopEvent);
    HTMLArea._removeEvent(popup.doc, "mousemove", PopupDiv.dragIt);
    popup.hideShowCovered();
};

PopupDiv.checkPopup = function (ev) {
    is_ie && (ev = window.event);
    var el = is_ie ? ev.srcElement : ev.target;
    var cp = PopupDiv.currentPopup;
    for (; (el != null) && (el != cp.element); el = el.parentNode);
    if (el == null) {
        cp.modal || ev.type == "mouseover" || cp.close();
        HTMLArea._stopEvent(ev);
    }
};

PopupDiv.prototype.addButtons = function() {
    var self = this;
    var div = this.doc.createElement("div");
    this.content.appendChild(div);
    div.className = "buttons";
    for (var i = 0; i < arguments.length; ++i) {
        var btn = arguments[i];
        var button = this.doc.createElement("button");
        div.appendChild(button);
        button.innerHTML = HTMLArea.I18N.buttons[btn];
        switch (btn) {
            case "ok":
            button.onclick = function() {
                self.callHandler();
                self.close();
            };
            break;
            case "cancel":
            button.onclick = function() {
                self.close();
            };
            break;
        }
    }
};