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      1 /*
      2  * Copyright (C) 2011 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 /**
     32  * @constructor
     33  * @extends {WebInspector.DataGridNode}
     34  * @param {function(number, number)} callback
     35  * @param {number} startPosition
     36  * @param {number} endPosition
     37  * @param {number} chunkSize
     38  */
     39 WebInspector.ShowMoreDataGridNode = function(callback, startPosition, endPosition, chunkSize)
     40 {
     41     WebInspector.DataGridNode.call(this, {summaryRow:true}, false);
     42     this._callback = callback;
     43     this._startPosition = startPosition;
     44     this._endPosition = endPosition;
     45     this._chunkSize = chunkSize;
     46 
     47     this.showNext = document.createElement("button");
     48     this.showNext.setAttribute("type", "button");
     49     this.showNext.addEventListener("click", this._showNextChunk.bind(this), false);
     50     this.showNext.textContent = WebInspector.UIString("Show %d before", this._chunkSize);
     51 
     52     this.showAll = document.createElement("button");
     53     this.showAll.setAttribute("type", "button");
     54     this.showAll.addEventListener("click", this._showAll.bind(this), false);
     55 
     56     this.showLast = document.createElement("button");
     57     this.showLast.setAttribute("type", "button");
     58     this.showLast.addEventListener("click", this._showLastChunk.bind(this), false);
     59     this.showLast.textContent = WebInspector.UIString("Show %d after", this._chunkSize);
     60 
     61     this._updateLabels();
     62     this.selectable = false;
     63 }
     64 
     65 WebInspector.ShowMoreDataGridNode.prototype = {
     66     _showNextChunk: function()
     67     {
     68         this._callback(this._startPosition, this._startPosition + this._chunkSize);
     69     },
     70 
     71     _showAll: function()
     72     {
     73         this._callback(this._startPosition, this._endPosition);
     74     },
     75 
     76     _showLastChunk: function()
     77     {
     78         this._callback(this._endPosition - this._chunkSize, this._endPosition);
     79     },
     80 
     81     _updateLabels: function()
     82     {
     83         var totalSize = this._endPosition - this._startPosition;
     84         if (totalSize > this._chunkSize) {
     85             this.showNext.classList.remove("hidden");
     86             this.showLast.classList.remove("hidden");
     87         } else {
     88             this.showNext.classList.add("hidden");
     89             this.showLast.classList.add("hidden");
     90         }
     91         this.showAll.textContent = WebInspector.UIString("Show all %d", totalSize);
     92     },
     93 
     94     /** override */
     95     createCells: function()
     96     {
     97         this._hasCells = false;
     98         WebInspector.DataGridNode.prototype.createCells.call(this);
     99     },
    100 
    101     /**
    102      * @override
    103      * @param {string} columnIdentifier
    104      * @return {!Element}
    105      */
    106     createCell: function(columnIdentifier)
    107     {
    108         var cell = this.createTD(columnIdentifier);
    109         if (!this._hasCells) {
    110             this._hasCells = true;
    111             if (this.depth)
    112                 cell.style.setProperty("padding-left", (this.depth * this.dataGrid.indentWidth) + "px");
    113             cell.appendChild(this.showNext);
    114             cell.appendChild(this.showAll);
    115             cell.appendChild(this.showLast);
    116         }
    117         return cell;
    118     },
    119 
    120     /**
    121      * @param {number} from
    122      */
    123     setStartPosition: function(from)
    124     {
    125         this._startPosition = from;
    126         this._updateLabels();
    127     },
    128 
    129     /**
    130      * @param {number} to
    131      */
    132     setEndPosition: function(to)
    133     {
    134         this._endPosition = to;
    135         this._updateLabels();
    136     },
    137 
    138     /**
    139      * @override
    140      * @return {number}
    141      */
    142     nodeSelfHeight: function()
    143     {
    144         return 32;
    145     },
    146 
    147     dispose: function()
    148     {
    149     },
    150 
    151     __proto__: WebInspector.DataGridNode.prototype
    152 }
    153 
    154