jfreechart.html

jfreechart最新源代码

<FONT color="green">562</FONT>         * <a name="line.562"></a>
<FONT color="green">563</FONT>         * @param legend  the legend (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.563"></a>
<FONT color="green">564</FONT>         */<a name="line.564"></a>
<FONT color="green">565</FONT>        public void addLegend(LegendTitle legend) {<a name="line.565"></a>
<FONT color="green">566</FONT>            addSubtitle(legend);    <a name="line.566"></a>
<FONT color="green">567</FONT>        }<a name="line.567"></a>
<FONT color="green">568</FONT>        <a name="line.568"></a>
<FONT color="green">569</FONT>        /**<a name="line.569"></a>
<FONT color="green">570</FONT>         * Returns the legend for the chart, if there is one.  Note that a chart<a name="line.570"></a>
<FONT color="green">571</FONT>         * can have more than one legend - this method returns the first.<a name="line.571"></a>
<FONT color="green">572</FONT>         * <a name="line.572"></a>
<FONT color="green">573</FONT>         * @return The legend (possibly &lt;code&gt;null&lt;/code&gt;).<a name="line.573"></a>
<FONT color="green">574</FONT>         */<a name="line.574"></a>
<FONT color="green">575</FONT>        public LegendTitle getLegend() {<a name="line.575"></a>
<FONT color="green">576</FONT>            return getLegend(0);<a name="line.576"></a>
<FONT color="green">577</FONT>        }<a name="line.577"></a>
<FONT color="green">578</FONT>        <a name="line.578"></a>
<FONT color="green">579</FONT>        /**<a name="line.579"></a>
<FONT color="green">580</FONT>         * Returns the nth legend for a chart, or &lt;code&gt;null&lt;/code&gt;.<a name="line.580"></a>
<FONT color="green">581</FONT>         * <a name="line.581"></a>
<FONT color="green">582</FONT>         * @param index  the legend index (zero-based).<a name="line.582"></a>
<FONT color="green">583</FONT>         * <a name="line.583"></a>
<FONT color="green">584</FONT>         * @return The legend (possibly &lt;code&gt;null&lt;/code&gt;).<a name="line.584"></a>
<FONT color="green">585</FONT>         */<a name="line.585"></a>
<FONT color="green">586</FONT>        public LegendTitle getLegend(int index) {<a name="line.586"></a>
<FONT color="green">587</FONT>            int seen = 0;<a name="line.587"></a>
<FONT color="green">588</FONT>            Iterator iterator = this.subtitles.iterator();<a name="line.588"></a>
<FONT color="green">589</FONT>            while (iterator.hasNext()) {<a name="line.589"></a>
<FONT color="green">590</FONT>                Title subtitle = (Title) iterator.next();<a name="line.590"></a>
<FONT color="green">591</FONT>                if (subtitle instanceof LegendTitle) {<a name="line.591"></a>
<FONT color="green">592</FONT>                    if (seen == index) {<a name="line.592"></a>
<FONT color="green">593</FONT>                        return (LegendTitle) subtitle;<a name="line.593"></a>
<FONT color="green">594</FONT>                    }<a name="line.594"></a>
<FONT color="green">595</FONT>                    else {<a name="line.595"></a>
<FONT color="green">596</FONT>                        seen++;   <a name="line.596"></a>
<FONT color="green">597</FONT>                    }<a name="line.597"></a>
<FONT color="green">598</FONT>                }<a name="line.598"></a>
<FONT color="green">599</FONT>            }<a name="line.599"></a>
<FONT color="green">600</FONT>            return null;        <a name="line.600"></a>
<FONT color="green">601</FONT>        }<a name="line.601"></a>
<FONT color="green">602</FONT>        <a name="line.602"></a>
<FONT color="green">603</FONT>        /**<a name="line.603"></a>
<FONT color="green">604</FONT>         * Removes the first legend in the chart and sends a <a name="line.604"></a>
<FONT color="green">605</FONT>         * {@link ChartChangeEvent} to all registered listeners.<a name="line.605"></a>
<FONT color="green">606</FONT>         */<a name="line.606"></a>
<FONT color="green">607</FONT>        public void removeLegend() {<a name="line.607"></a>
<FONT color="green">608</FONT>            removeSubtitle(getLegend());<a name="line.608"></a>
<FONT color="green">609</FONT>        }<a name="line.609"></a>
<FONT color="green">610</FONT>        <a name="line.610"></a>
<FONT color="green">611</FONT>        /**<a name="line.611"></a>
<FONT color="green">612</FONT>         * Returns the list of subtitles for the chart.<a name="line.612"></a>
<FONT color="green">613</FONT>         *<a name="line.613"></a>
<FONT color="green">614</FONT>         * @return The subtitle list (possibly empty, but never &lt;code&gt;null&lt;/code&gt;).<a name="line.614"></a>
<FONT color="green">615</FONT>         */<a name="line.615"></a>
<FONT color="green">616</FONT>        public List getSubtitles() {<a name="line.616"></a>
<FONT color="green">617</FONT>            return this.subtitles;<a name="line.617"></a>
<FONT color="green">618</FONT>        }<a name="line.618"></a>
<FONT color="green">619</FONT>    <a name="line.619"></a>
<FONT color="green">620</FONT>        /**<a name="line.620"></a>
<FONT color="green">621</FONT>         * Sets the title list for the chart (completely replaces any existing <a name="line.621"></a>
<FONT color="green">622</FONT>         * titles).<a name="line.622"></a>
<FONT color="green">623</FONT>         *<a name="line.623"></a>
<FONT color="green">624</FONT>         * @param subtitles  the new list of subtitles (&lt;code&gt;null&lt;/code&gt; not <a name="line.624"></a>
<FONT color="green">625</FONT>         *                   permitted).<a name="line.625"></a>
<FONT color="green">626</FONT>         */<a name="line.626"></a>
<FONT color="green">627</FONT>        public void setSubtitles(List subtitles) {<a name="line.627"></a>
<FONT color="green">628</FONT>            if (subtitles == null) {<a name="line.628"></a>
<FONT color="green">629</FONT>                throw new NullPointerException("Null 'subtitles' argument.");<a name="line.629"></a>
<FONT color="green">630</FONT>            }<a name="line.630"></a>
<FONT color="green">631</FONT>            this.subtitles = subtitles;<a name="line.631"></a>
<FONT color="green">632</FONT>            fireChartChanged();<a name="line.632"></a>
<FONT color="green">633</FONT>        }<a name="line.633"></a>
<FONT color="green">634</FONT>    <a name="line.634"></a>
<FONT color="green">635</FONT>        /**<a name="line.635"></a>
<FONT color="green">636</FONT>         * Returns the number of titles for the chart.<a name="line.636"></a>
<FONT color="green">637</FONT>         *<a name="line.637"></a>
<FONT color="green">638</FONT>         * @return The number of titles for the chart.<a name="line.638"></a>
<FONT color="green">639</FONT>         */<a name="line.639"></a>
<FONT color="green">640</FONT>        public int getSubtitleCount() {<a name="line.640"></a>
<FONT color="green">641</FONT>            return this.subtitles.size();<a name="line.641"></a>
<FONT color="green">642</FONT>        }<a name="line.642"></a>
<FONT color="green">643</FONT>    <a name="line.643"></a>
<FONT color="green">644</FONT>        /**<a name="line.644"></a>
<FONT color="green">645</FONT>         * Returns a chart subtitle.<a name="line.645"></a>
<FONT color="green">646</FONT>         *<a name="line.646"></a>
<FONT color="green">647</FONT>         * @param index  the index of the chart subtitle (zero based).<a name="line.647"></a>
<FONT color="green">648</FONT>         *<a name="line.648"></a>
<FONT color="green">649</FONT>         * @return A chart subtitle.<a name="line.649"></a>
<FONT color="green">650</FONT>         */<a name="line.650"></a>
<FONT color="green">651</FONT>        public Title getSubtitle(int index) {<a name="line.651"></a>
<FONT color="green">652</FONT>            if ((index &lt; 0) || (index == getSubtitleCount())) {<a name="line.652"></a>
<FONT color="green">653</FONT>                throw new IllegalArgumentException("Index out of range.");<a name="line.653"></a>
<FONT color="green">654</FONT>            }<a name="line.654"></a>
<FONT color="green">655</FONT>            return (Title) this.subtitles.get(index);<a name="line.655"></a>
<FONT color="green">656</FONT>        }<a name="line.656"></a>
<FONT color="green">657</FONT>    <a name="line.657"></a>
<FONT color="green">658</FONT>        /**<a name="line.658"></a>
<FONT color="green">659</FONT>         * Adds a chart subtitle, and notifies registered listeners that the chart <a name="line.659"></a>
<FONT color="green">660</FONT>         * has been modified.<a name="line.660"></a>
<FONT color="green">661</FONT>         *<a name="line.661"></a>
<FONT color="green">662</FONT>         * @param subtitle  the subtitle (&lt;code&gt;null&lt;/code&gt; not permitted).<a name="line.662"></a>
<FONT color="green">663</FONT>         */<a name="line.663"></a>
<FONT color="green">664</FONT>        public void addSubtitle(Title subtitle) {<a name="line.664"></a>
<FONT color="green">665</FONT>            if (subtitle == null) {<a name="line.665"></a>
<FONT color="green">666</FONT>                throw new IllegalArgumentException("Null 'subtitle' argument.");<a name="line.666"></a>
<FONT color="green">667</FONT>            }<a name="line.667"></a>
<FONT color="green">668</FONT>            this.subtitles.add(subtitle);<a name="line.668"></a>
<FONT color="green">669</FONT>            subtitle.addChangeListener(this);<a name="line.669"></a>
<FONT color="green">670</FONT>            fireChartChanged();<a name="line.670"></a>
<FONT color="green">671</FONT>        }<a name="line.671"></a>
<FONT color="green">672</FONT>        <a name="line.672"></a>
<FONT color="green">673</FONT>        /**<a name="line.673"></a>
<FONT color="green">674</FONT>         * Clears all subtitles from the chart and sends a {@link ChartChangeEvent}<a name="line.674"></a>
<FONT color="green">675</FONT>         * to all registered listeners.<a name="line.675"></a>
<FONT color="green">676</FONT>         */<a name="line.676"></a>
<FONT color="green">677</FONT>        public void clearSubtitles() {<a name="line.677"></a>
<FONT color="green">678</FONT>            Iterator iterator = this.subtitles.iterator();<a name="line.678"></a>
<FONT color="green">679</FONT>            while (iterator.hasNext()) {<a name="line.679"></a>
<FONT color="green">680</FONT>                Title t = (Title) iterator.next();<a name="line.680"></a>
<FONT color="green">681</FONT>                t.removeChangeListener(this);<a name="line.681"></a>
<FONT color="green">682</FONT>            }<a name="line.682"></a>
<FONT color="green">683</FONT>            this.subtitles.clear();<a name="line.683"></a>
<FONT color="green">684</FONT>            fireChartChanged();<a name="line.684"></a>
<FONT color="green">685</FONT>        }<a name="line.685"></a>
<FONT color="green">686</FONT>    <a name="line.686"></a>
<FONT color="green">687</FONT>        /**<a name="line.687"></a>
<FONT color="green">688</FONT>         * Removes the specified subtitle and sends a {@link ChartChangeEvent} to<a name="line.688"></a>
<FONT color="green">689</FONT>         * all registered listeners.<a name="line.689"></a>
<FONT color="green">690</FONT>         * <a name="line.690"></a>
<FONT color="green">691</FONT>         * @param title  the title.<a name="line.691"></a>
<FONT color="green">692</FONT>         */<a name="line.692"></a>
<FONT color="green">693</FONT>        public void removeSubtitle(Title title) {<a name="line.693"></a>
<FONT color="green">694</FONT>            this.subtitles.remove(title);<a name="line.694"></a>
<FONT color="green">695</FONT>            fireChartChanged();<a name="line.695"></a>
<FONT color="green">696</FONT>        }<a name="line.696"></a>
<FONT color="green">697</FONT>        <a name="line.697"></a>
<FONT color="green">698</FONT>        /**<a name="line.698"></